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feat(real-world-vfc-slice): add labeled OpenSSL/Firefox/Chromium/curl pair corpus

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Harvest 176 isolated vuln-vs-fix functions (109 CVEs, 352 training rows)
into benchmarks/pairs/vfc with provenance and a JSONL training manifest.
Score the slice as an honesty dashboard (ousast pairs --slice vfc);
keep the pair gate on the local fixtures only.
This commit is contained in:
Marius Ciepluch
2026-09-04 16:45:38 +02:00
parent e9f185da59
commit 0116f9bea6
372 changed files with 49209 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files
benchmarks/pairs/README.md
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@@ -34,12 +34,19 @@ Pairs in this directory **must not** join `LANGUAGE_MANIFESTS`.
- **sast** — OWASP Benchmark Java/Python true-vs-false files and Juliet
bad-vs-good sinks (`benchmarks/pairs/sast/`). Score is Youden (TPR − FPR).
Honesty dashboard, not a CI fail.
- **vfc** — reviewed isolated functions from OpenSSL, Firefox, Chromium, and
curl (`benchmarks/pairs/vfc/`). Overlay vs inventory scoreboard. Honesty
dashboard, not a CI fail. Training labels (vuln vs fixed) are
`vfc/training/manifest.jsonl` (vuln vs fixed, one snapshot per line).
Grow with a blobless `git log --grep=CVE-202` mine plus `vfc/harvest.py`,
then `vfc/generate_catalog.py` (maintainer, not CI).
## Commands
```bash
uv run ousast pairs
uv run ousast pairs --slice github --json
uv run ousast pairs --slice vfc --json
uv run python -m openultrasast.pair_gate
```
benchmarks/pairs/datasets.toml
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@@ -122,3 +122,32 @@ url = "https://github.com/tqrg/security-patches-dataset"
level = "commit"
languages = ["multi"]
notes = "Ground-truth security patches mined from NVD, CVE Details, OSV."
[[dataset]]
name = "OpenSSL"
url = "https://github.com/openssl/openssl"
level = "commit/function"
languages = ["C"]
notes = "Public git. Seed: CVE-2014-0160 tls1_process_heartbeat. Do not vendor the whole tree; harvest isolated functions."
[[dataset]]
name = "Firefox mozilla-central"
url = "https://hg.mozilla.org/mozilla-central"
data = "https://github.com/mozilla-firefox/firefox"
level = "commit/function"
languages = ["C/C++", "JavaScript"]
notes = "Canonical VCS is hg.mozilla.org; git mirrors are gecko-dev (archived) and mozilla-firefox/firefox. Filter CVEfixes/MoreFixes for gecko-dev. Do not clone mozilla-central. FixFox is embargoed until 2030. Seed: CVE-2020-15667 mar_insert_item."
[[dataset]]
name = "Chromium"
url = "https://github.com/chromium/chromium"
level = "commit/function"
languages = ["C/C++", "JavaScript"]
notes = "Public git mirror of chromium/src. Seed: CVE-2019-5786 FileReaderLoader::ArrayBufferResult. Do not vendor the whole tree."
[[dataset]]
name = "curl"
url = "https://github.com/curl/curl"
level = "commit/function"
languages = ["C"]
notes = "Public git. Seed: CVE-2023-38545 do_SOCKS5. Isolated functions only; do not vendor the tree."
benchmarks/pairs/vfc/catalog.toml
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benchmarks/pairs/vfc/chromium-cve-2019-5786/fixed.cc
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@@ -0,0 +1,67 @@
/* Provenance: Chromium FileReaderLoader::ArrayBufferResult after CVE-2019-5786.
* repo: chromium/chromium
* commit: ba9748e78ec7e9c0d594e7edf7b2c07ea2a90449
* parent: 9f3fccdba567f30ea39b08f57d8d5b49cd832b4a
* commit_url: https://github.com/chromium/chromium/commit/ba9748e78ec7e9c0d594e7edf7b2c07ea2a90449
* cve: CVE-2019-5786
* license: BSD-3-Clause
* function: FileReaderLoader::ArrayBufferResult
* relpath: third_party/blink/renderer/core/fileapi/file_reader_loader.cc
*/
#include <cstdint>
#include <memory>
enum class FileErrorCode { kOK };
class ArrayBuffer {
public:
static void *Create(const void *data, size_t length) {
(void)data;
(void)length;
return nullptr;
}
};
class DOMArrayBuffer {
public:
static DOMArrayBuffer *Create(void *buffer) {
(void)buffer;
return nullptr;
}
};
struct RawData {
void *ToArrayBuffer() { return nullptr; }
size_t ByteLength() const { return 0; }
const void *Data() const { return nullptr; }
};
class FileReaderLoader {
public:
DOMArrayBuffer *ArrayBufferResult();
DOMArrayBuffer *array_buffer_result_ = nullptr;
std::unique_ptr<RawData> raw_data_;
FileErrorCode error_code_ = FileErrorCode::kOK;
bool finished_loading_ = false;
void AdjustReportedMemoryUsageToV8(int64_t delta) { (void)delta; }
};
DOMArrayBuffer *FileReaderLoader::ArrayBufferResult() {
if (array_buffer_result_)
return array_buffer_result_;
// If the loading is not started or an error occurs, return an empty result.
if (!raw_data_ || error_code_ != FileErrorCode::kOK)
return nullptr;
if (!finished_loading_) {
return DOMArrayBuffer::Create(ArrayBuffer::Create(raw_data_->Data(), raw_data_->ByteLength()));
}
array_buffer_result_ = DOMArrayBuffer::Create(raw_data_->ToArrayBuffer());
AdjustReportedMemoryUsageToV8(-1 * static_cast<int64_t>(raw_data_->ByteLength()));
raw_data_.reset();
return array_buffer_result_;
}
benchmarks/pairs/vfc/chromium-cve-2019-5786/vuln.cc
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@@ -0,0 +1,67 @@
/* Provenance: Chromium FileReaderLoader::ArrayBufferResult before CVE-2019-5786.
* repo: chromium/chromium
* commit: 9f3fccdba567f30ea39b08f57d8d5b49cd832b4a
* parent: 9f3fccdba567f30ea39b08f57d8d5b49cd832b4a
* fix: ba9748e78ec7e9c0d594e7edf7b2c07ea2a90449
* commit_url: https://github.com/chromium/chromium/commit/ba9748e78ec7e9c0d594e7edf7b2c07ea2a90449
* cve: CVE-2019-5786
* license: BSD-3-Clause
* function: FileReaderLoader::ArrayBufferResult
* relpath: third_party/blink/renderer/core/fileapi/file_reader_loader.cc
*/
#include <cstdint>
#include <memory>
enum class FileErrorCode { kOK };
class ArrayBuffer {
public:
static void *Create(const void *data, size_t length) {
(void)data;
(void)length;
return nullptr;
}
};
class DOMArrayBuffer {
public:
static DOMArrayBuffer *Create(void *buffer) {
(void)buffer;
return nullptr;
}
};
struct RawData {
void *ToArrayBuffer() { return nullptr; }
size_t ByteLength() const { return 0; }
const void *Data() const { return nullptr; }
};
class FileReaderLoader {
public:
DOMArrayBuffer *ArrayBufferResult();
DOMArrayBuffer *array_buffer_result_ = nullptr;
std::unique_ptr<RawData> raw_data_;
FileErrorCode error_code_ = FileErrorCode::kOK;
bool finished_loading_ = false;
void AdjustReportedMemoryUsageToV8(int64_t delta) { (void)delta; }
};
DOMArrayBuffer *FileReaderLoader::ArrayBufferResult() {
if (array_buffer_result_)
return array_buffer_result_;
// If the loading is not started or an error occurs, return an empty result.
if (!raw_data_ || error_code_ != FileErrorCode::kOK)
return nullptr;
DOMArrayBuffer *result = DOMArrayBuffer::Create(raw_data_->ToArrayBuffer());
if (finished_loading_) {
array_buffer_result_ = result;
AdjustReportedMemoryUsageToV8(-1 * static_cast<int64_t>(raw_data_->ByteLength()));
raw_data_.reset();
}
return result;
}
benchmarks/pairs/vfc/chromium-cve-2022-2162/fixed.cc
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@@ -0,0 +1,44 @@
// Provenance: chromium/chromium IsShellIntegratedExtension (fixed).
// repo: chromium/chromium
// commit: 22c61cfae5d1b37c773e638d342488ae11118b51
// parent: a07d0ae0a7dc68686adca10dcf11138cb2f4ab6d
// commit_url: https://github.com/chromium/chromium/commit/22c61cfae5d1b37c773e638d342488ae11118b51
// cve: CVE-2022-2162
// license: BSD-3-Clause
// function: IsShellIntegratedExtension
// relpath: content/browser/file_system_access/file_system_chooser.cc
bool FileSystemChooser::IsShellIntegratedExtension(
const base::FilePath::StringType& extension) {
// TODO(https://crbug.com/1154757): Figure out some way to unify this with
// net::IsSafePortablePathComponent, with the result probably ending up in
// base/i18n/file_util_icu.h.
// - For the sake of consistency across platforms, we sanitize '.lnk' and
// '.local' files on all platforms (not just Windows)
// - There are some extensions (i.e. '.scf') we would like to sanitize which
// `net::GenerateFileName()` does not
base::FilePath::StringType extension_lower =
base::ToLowerASCII(GetLastExtension(extension));
// '.lnk' and '.scf' files may be used to execute arbitrary code (see
// https://nvd.nist.gov/vuln/detail/CVE-2010-2568 and
// https://crbug.com/1227995, respectively). '.local' files are used by
// Windows to determine which DLLs to load for an application. '.url' files
// can be used to read arbirtary files (see https://crbug.com/1307930).
if ((extension_lower == FILE_PATH_LITERAL("lnk")) ||
(extension_lower == FILE_PATH_LITERAL("local")) ||
(extension_lower == FILE_PATH_LITERAL("scf")) ||
(extension_lower == FILE_PATH_LITERAL("url"))) {
return true;
}
// Setting a file's extension to a CLSID may conceal its actual file type on
// some Windows versions (see https://nvd.nist.gov/vuln/detail/CVE-2004-0420).
if (!extension_lower.empty() &&
(extension_lower.front() == FILE_PATH_LITERAL('{')) &&
(extension_lower.back() == FILE_PATH_LITERAL('}'))) {
return true;
}
return false;
}
benchmarks/pairs/vfc/chromium-cve-2022-2162/vuln.cc
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@@ -0,0 +1,42 @@
// Provenance: chromium/chromium IsShellIntegratedExtension (vuln).
// repo: chromium/chromium
// commit: a07d0ae0a7dc68686adca10dcf11138cb2f4ab6d
// parent: a07d0ae0a7dc68686adca10dcf11138cb2f4ab6d
// commit_url: https://github.com/chromium/chromium/commit/22c61cfae5d1b37c773e638d342488ae11118b51
// cve: CVE-2022-2162
// license: BSD-3-Clause
// function: IsShellIntegratedExtension
// relpath: content/browser/file_system_access/file_system_chooser.cc
bool FileSystemChooser::IsShellIntegratedExtension(
const base::FilePath::StringType& extension) {
// TODO(https://crbug.com/1154757): Figure out some way to unify this with
// net::IsSafePortablePathComponent, with the result probably ending up in
// base/i18n/file_util_icu.h.
// - For the sake of consistency across platforms, we sanitize '.lnk' and
// '.local' files on all platforms (not just Windows)
// - There are some extensions (i.e. '.scf') we would like to sanitize which
// `net::GenerateFileName()` does not
base::FilePath::StringType extension_lower =
base::ToLowerASCII(GetLastExtension(extension));
// .lnk and .scf files may be used to execute arbitrary code (see
// https://nvd.nist.gov/vuln/detail/CVE-2010-2568 and
// https://crbug.com/1227995, respectively). .local files are used by Windows
// to determine which DLLs to load for an application.
if ((extension_lower == FILE_PATH_LITERAL("lnk")) ||
(extension_lower == FILE_PATH_LITERAL("local")) ||
(extension_lower == FILE_PATH_LITERAL("scf"))) {
return true;
}
// Setting a file's extension to a CLSID may conceal its actual file type on
// some Windows versions (see https://nvd.nist.gov/vuln/detail/CVE-2004-0420).
if (!extension_lower.empty() &&
(extension_lower.front() == FILE_PATH_LITERAL('{')) &&
(extension_lower.back() == FILE_PATH_LITERAL('}'))) {
return true;
}
return false;
}
benchmarks/pairs/vfc/curl-cve-2020-8177/fixed.c
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/* Provenance: curl/curl tool_header_cb (fixed).
* repo: curl/curl
* commit: 8236aba58542c5f89f1d41ca09d84579efb05e22
* parent: 26d2755d7c3181e90e46014778941bff53d2309f
* commit_url: https://github.com/curl/curl/commit/8236aba58542c5f89f1d41ca09d84579efb05e22
* cve: CVE-2020-8177
* license: curl
* function: tool_header_cb
* relpath: src/tool_cb_hdr.c
*/
size_t tool_header_cb(char *ptr, size_t size, size_t nmemb, void *userdata)
{
struct per_transfer *per = userdata;
struct HdrCbData *hdrcbdata = &per->hdrcbdata;
struct OutStruct *outs = &per->outs;
struct OutStruct *heads = &per->heads;
struct OutStruct *etag_save = &per->etag_save;
const char *str = ptr;
const size_t cb = size * nmemb;
const char *end = (char *)ptr + cb;
long protocol = 0;
/*
* Once that libcurl has called back tool_header_cb() the returned value
* is checked against the amount that was intended to be written, if
* it does not match then it fails with CURLE_WRITE_ERROR. So at this
* point returning a value different from sz*nmemb indicates failure.
*/
size_t failure = (size && nmemb) ? 0 : 1;
if(!per->config)
return failure;
#ifdef DEBUGBUILD
if(size * nmemb > (size_t)CURL_MAX_HTTP_HEADER) {
warnf(per->config->global, "Header data exceeds single call write "
"limit!\n");
return failure;
}
#endif
/*
* Write header data when curl option --dump-header (-D) is given.
*/
if(per->config->headerfile && heads->stream) {
size_t rc = fwrite(ptr, size, nmemb, heads->stream);
if(rc != cb)
return rc;
/* flush the stream to send off what we got earlier */
(void)fflush(heads->stream);
}
/*
* Write etag to file when --etag-save option is given.
* etag string that we want is enveloped in double quotes
*/
if(per->config->etag_save_file && etag_save->stream) {
/* match only header that start with etag (case insensitive) */
if(curl_strnequal(str, "etag:", 5)) {
char *etag_h = NULL;
char *first = NULL;
char *last = NULL;
size_t etag_length = 0;
etag_h = ptr;
/* point to first occurrence of double quote */
first = memchr(etag_h, '\"', cb);
/*
* if server side messed with the etag header and doesn't include
* double quotes around the etag, kindly exit with a warning
*/
if(!first) {
warnf(per->config->global,
"\nReceived header etag is missing double quote/s\n");
return 1;
}
else {
/* discard first double quote */
first++;
}
/* point to last occurrence of double quote */
last = memchr(first, '\"', cb);
if(!last) {
warnf(per->config->global,
"\nReceived header etag is missing double quote/s\n");
return 1;
}
/* get length of desired etag */
etag_length = (size_t)last - (size_t)first;
fwrite(first, size, etag_length, etag_save->stream);
/* terminate with new line */
fputc('\n', etag_save->stream);
}
(void)fflush(etag_save->stream);
}
/*
* This callback sets the filename where output shall be written when
* curl options --remote-name (-O) and --remote-header-name (-J) have
* been simultaneously given and additionally server returns an HTTP
* Content-Disposition header specifying a filename property.
*/
curl_easy_getinfo(per->curl, CURLINFO_PROTOCOL, &protocol);
if(hdrcbdata->honor_cd_filename &&
(cb > 20) && checkprefix("Content-disposition:", str) &&
(protocol & (CURLPROTO_HTTPS|CURLPROTO_HTTP))) {
const char *p = str + 20;
/* look for the 'filename=' parameter
(encoded filenames (*=) are not supported) */
for(;;) {
char *filename;
size_t len;
while(*p && (p < end) && !ISALPHA(*p))
p++;
if(p > end - 9)
break;
if(memcmp(p, "filename=", 9)) {
/* no match, find next parameter */
while((p < end) && (*p != ';'))
p++;
continue;
}
p += 9;
/* this expression below typecasts 'cb' only to avoid
warning: signed and unsigned type in conditional expression
*/
len = (ssize_t)cb - (p - str);
filename = parse_filename(p, len);
if(filename) {
if(outs->stream) {
/* indication of problem, get out! */
free(filename);
return failure;
}
outs->is_cd_filename = TRUE;
outs->s_isreg = TRUE;
outs->fopened = FALSE;
outs->filename = filename;
outs->alloc_filename = TRUE;
hdrcbdata->honor_cd_filename = FALSE; /* done now! */
if(!tool_create_output_file(outs, per->config))
return failure;
}
break;
}
if(!outs->stream && !tool_create_output_file(outs, per->config))
return failure;
}
if(hdrcbdata->config->show_headers &&
(protocol &
(CURLPROTO_HTTP|CURLPROTO_HTTPS|CURLPROTO_RTSP|CURLPROTO_FILE))) {
/* bold headers only for selected protocols */
char *value = NULL;
if(!outs->stream && !tool_create_output_file(outs, per->config))
return failure;
if(hdrcbdata->global->isatty && hdrcbdata->global->styled_output)
value = memchr(ptr, ':', cb);
if(value) {
size_t namelen = value - ptr;
fprintf(outs->stream, BOLD "%.*s" BOLDOFF ":", namelen, ptr);
fwrite(&value[1], cb - namelen - 1, 1, outs->stream);
}
else
/* not "handled", just show it */
fwrite(ptr, cb, 1, outs->stream);
}
return cb;
}
benchmarks/pairs/vfc/curl-cve-2020-8177/vuln.c
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/* Provenance: curl/curl tool_header_cb (vuln).
* repo: curl/curl
* commit: 26d2755d7c3181e90e46014778941bff53d2309f
* parent: 26d2755d7c3181e90e46014778941bff53d2309f
* commit_url: https://github.com/curl/curl/commit/8236aba58542c5f89f1d41ca09d84579efb05e22
* cve: CVE-2020-8177
* license: curl
* function: tool_header_cb
* relpath: src/tool_cb_hdr.c
*/
size_t tool_header_cb(char *ptr, size_t size, size_t nmemb, void *userdata)
{
struct per_transfer *per = userdata;
struct HdrCbData *hdrcbdata = &per->hdrcbdata;
struct OutStruct *outs = &per->outs;
struct OutStruct *heads = &per->heads;
struct OutStruct *etag_save = &per->etag_save;
const char *str = ptr;
const size_t cb = size * nmemb;
const char *end = (char *)ptr + cb;
long protocol = 0;
/*
* Once that libcurl has called back tool_header_cb() the returned value
* is checked against the amount that was intended to be written, if
* it does not match then it fails with CURLE_WRITE_ERROR. So at this
* point returning a value different from sz*nmemb indicates failure.
*/
size_t failure = (size && nmemb) ? 0 : 1;
if(!per->config)
return failure;
#ifdef DEBUGBUILD
if(size * nmemb > (size_t)CURL_MAX_HTTP_HEADER) {
warnf(per->config->global, "Header data exceeds single call write "
"limit!\n");
return failure;
}
#endif
/*
* Write header data when curl option --dump-header (-D) is given.
*/
if(per->config->headerfile && heads->stream) {
size_t rc = fwrite(ptr, size, nmemb, heads->stream);
if(rc != cb)
return rc;
/* flush the stream to send off what we got earlier */
(void)fflush(heads->stream);
}
/*
* Write etag to file when --etag-save option is given.
* etag string that we want is enveloped in double quotes
*/
if(per->config->etag_save_file && etag_save->stream) {
/* match only header that start with etag (case insensitive) */
if(curl_strnequal(str, "etag:", 5)) {
char *etag_h = NULL;
char *first = NULL;
char *last = NULL;
size_t etag_length = 0;
etag_h = ptr;
/* point to first occurrence of double quote */
first = memchr(etag_h, '\"', cb);
/*
* if server side messed with the etag header and doesn't include
* double quotes around the etag, kindly exit with a warning
*/
if(!first) {
warnf(per->config->global,
"\nReceived header etag is missing double quote/s\n");
return 1;
}
else {
/* discard first double quote */
first++;
}
/* point to last occurrence of double quote */
last = memchr(first, '\"', cb);
if(!last) {
warnf(per->config->global,
"\nReceived header etag is missing double quote/s\n");
return 1;
}
/* get length of desired etag */
etag_length = (size_t)last - (size_t)first;
fwrite(first, size, etag_length, etag_save->stream);
/* terminate with new line */
fputc('\n', etag_save->stream);
}
(void)fflush(etag_save->stream);
}
/*
* This callback sets the filename where output shall be written when
* curl options --remote-name (-O) and --remote-header-name (-J) have
* been simultaneously given and additionally server returns an HTTP
* Content-Disposition header specifying a filename property.
*/
curl_easy_getinfo(per->curl, CURLINFO_PROTOCOL, &protocol);
if(hdrcbdata->honor_cd_filename &&
(cb > 20) && checkprefix("Content-disposition:", str) &&
(protocol & (CURLPROTO_HTTPS|CURLPROTO_HTTP))) {
const char *p = str + 20;
/* look for the 'filename=' parameter
(encoded filenames (*=) are not supported) */
for(;;) {
char *filename;
size_t len;
while(*p && (p < end) && !ISALPHA(*p))
p++;
if(p > end - 9)
break;
if(memcmp(p, "filename=", 9)) {
/* no match, find next parameter */
while((p < end) && (*p != ';'))
p++;
continue;
}
p += 9;
/* this expression below typecasts 'cb' only to avoid
warning: signed and unsigned type in conditional expression
*/
len = (ssize_t)cb - (p - str);
filename = parse_filename(p, len);
if(filename) {
if(outs->stream) {
int rc;
/* already opened and possibly written to */
if(outs->fopened)
fclose(outs->stream);
outs->stream = NULL;
/* rename the initial file name to the new file name */
rc = rename(outs->filename, filename);
if(rc != 0) {
warnf(per->config->global, "Failed to rename %s -> %s: %s\n",
outs->filename, filename, strerror(errno));
}
if(outs->alloc_filename)
Curl_safefree(outs->filename);
if(rc != 0) {
free(filename);
return failure;
}
}
outs->is_cd_filename = TRUE;
outs->s_isreg = TRUE;
outs->fopened = FALSE;
outs->filename = filename;
outs->alloc_filename = TRUE;
hdrcbdata->honor_cd_filename = FALSE; /* done now! */
if(!tool_create_output_file(outs, per->config))
return failure;
}
break;
}
if(!outs->stream && !tool_create_output_file(outs, per->config))
return failure;
}
if(hdrcbdata->config->show_headers &&
(protocol &
(CURLPROTO_HTTP|CURLPROTO_HTTPS|CURLPROTO_RTSP|CURLPROTO_FILE))) {
/* bold headers only for selected protocols */
char *value = NULL;
if(!outs->stream && !tool_create_output_file(outs, per->config))
return failure;
if(hdrcbdata->global->isatty && hdrcbdata->global->styled_output)
value = memchr(ptr, ':', cb);
if(value) {
size_t namelen = value - ptr;
fprintf(outs->stream, BOLD "%.*s" BOLDOFF ":", namelen, ptr);
fwrite(&value[1], cb - namelen - 1, 1, outs->stream);
}
else
/* not "handled", just show it */
fwrite(ptr, cb, 1, outs->stream);
}
return cb;
}
benchmarks/pairs/vfc/curl-cve-2020-8231-curl_multi_add_handle/fixed.c
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/* Provenance: curl/curl curl_multi_add_handle (fixed).
* repo: curl/curl
* commit: 3c9e021f86872baae412a427e807fbfa2f3e8a22
* parent: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
* commit_url: https://github.com/curl/curl/commit/3c9e021f86872baae412a427e807fbfa2f3e8a22
* cve: CVE-2020-8231
* license: curl
* function: curl_multi_add_handle
* relpath: lib/multi.c
*/
CURLMcode curl_multi_add_handle(struct Curl_multi *multi,
struct Curl_easy *data)
{
/* First, make some basic checks that the CURLM handle is a good handle */
if(!GOOD_MULTI_HANDLE(multi))
return CURLM_BAD_HANDLE;
/* Verify that we got a somewhat good easy handle too */
if(!GOOD_EASY_HANDLE(data))
return CURLM_BAD_EASY_HANDLE;
/* Prevent users from adding same easy handle more than once and prevent
adding to more than one multi stack */
if(data->multi)
return CURLM_ADDED_ALREADY;
if(multi->in_callback)
return CURLM_RECURSIVE_API_CALL;
/* Initialize timeout list for this handle */
Curl_llist_init(&data->state.timeoutlist, NULL);
/*
* No failure allowed in this function beyond this point. And no
* modification of easy nor multi handle allowed before this except for
* potential multi's connection cache growing which won't be undone in this
* function no matter what.
*/
if(data->set.errorbuffer)
data->set.errorbuffer[0] = 0;
/* set the easy handle */
multistate(data, CURLM_STATE_INIT);
/* for multi interface connections, we share DNS cache automatically if the
easy handle's one is currently not set. */
if(!data->dns.hostcache ||
(data->dns.hostcachetype == HCACHE_NONE)) {
data->dns.hostcache = &multi->hostcache;
data->dns.hostcachetype = HCACHE_MULTI;
}
/* Point to the shared or multi handle connection cache */
if(data->share && (data->share->specifier & (1<< CURL_LOCK_DATA_CONNECT)))
data->state.conn_cache = &data->share->conn_cache;
else
data->state.conn_cache = &multi->conn_cache;
data->state.lastconnect_id = -1;
#ifdef USE_LIBPSL
/* Do the same for PSL. */
if(data->share && (data->share->specifier & (1 << CURL_LOCK_DATA_PSL)))
data->psl = &data->share->psl;
else
data->psl = &multi->psl;
#endif
/* We add the new entry last in the list. */
data->next = NULL; /* end of the line */
if(multi->easyp) {
struct Curl_easy *last = multi->easylp;
last->next = data;
data->prev = last;
multi->easylp = data; /* the new last node */
}
else {
/* first node, make prev NULL! */
data->prev = NULL;
multi->easylp = multi->easyp = data; /* both first and last */
}
/* make the Curl_easy refer back to this multi handle */
data->multi = multi;
/* Set the timeout for this handle to expire really soon so that it will
be taken care of even when this handle is added in the midst of operation
when only the curl_multi_socket() API is used. During that flow, only
sockets that time-out or have actions will be dealt with. Since this
handle has no action yet, we make sure it times out to get things to
happen. */
Curl_expire(data, 0, EXPIRE_RUN_NOW);
/* increase the node-counter */
multi->num_easy++;
/* increase the alive-counter */
multi->num_alive++;
/* A somewhat crude work-around for a little glitch in Curl_update_timer()
that happens if the lastcall time is set to the same time when the handle
is removed as when the next handle is added, as then the check in
Curl_update_timer() that prevents calling the application multiple times
with the same timer info will not trigger and then the new handle's
timeout will not be notified to the app.
The work-around is thus simply to clear the 'lastcall' variable to force
Curl_update_timer() to always trigger a callback to the app when a new
easy handle is added */
memset(&multi->timer_lastcall, 0, sizeof(multi->timer_lastcall));
CONNCACHE_LOCK(data);
/* The closure handle only ever has default timeouts set. To improve the
state somewhat we clone the timeouts from each added handle so that the
closure handle always has the same timeouts as the most recently added
easy handle. */
data->state.conn_cache->closure_handle->set.timeout = data->set.timeout;
data->state.conn_cache->closure_handle->set.server_response_timeout =
data->set.server_response_timeout;
data->state.conn_cache->closure_handle->set.no_signal =
data->set.no_signal;
CONNCACHE_UNLOCK(data);
Curl_update_timer(multi);
return CURLM_OK;
}
benchmarks/pairs/vfc/curl-cve-2020-8231-curl_multi_add_handle/vuln.c
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/* Provenance: curl/curl curl_multi_add_handle (vuln).
* repo: curl/curl
* commit: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
* parent: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
* commit_url: https://github.com/curl/curl/commit/3c9e021f86872baae412a427e807fbfa2f3e8a22
* cve: CVE-2020-8231
* license: curl
* function: curl_multi_add_handle
* relpath: lib/multi.c
*/
CURLMcode curl_multi_add_handle(struct Curl_multi *multi,
struct Curl_easy *data)
{
/* First, make some basic checks that the CURLM handle is a good handle */
if(!GOOD_MULTI_HANDLE(multi))
return CURLM_BAD_HANDLE;
/* Verify that we got a somewhat good easy handle too */
if(!GOOD_EASY_HANDLE(data))
return CURLM_BAD_EASY_HANDLE;
/* Prevent users from adding same easy handle more than once and prevent
adding to more than one multi stack */
if(data->multi)
return CURLM_ADDED_ALREADY;
if(multi->in_callback)
return CURLM_RECURSIVE_API_CALL;
/* Initialize timeout list for this handle */
Curl_llist_init(&data->state.timeoutlist, NULL);
/*
* No failure allowed in this function beyond this point. And no
* modification of easy nor multi handle allowed before this except for
* potential multi's connection cache growing which won't be undone in this
* function no matter what.
*/
if(data->set.errorbuffer)
data->set.errorbuffer[0] = 0;
/* set the easy handle */
multistate(data, CURLM_STATE_INIT);
/* for multi interface connections, we share DNS cache automatically if the
easy handle's one is currently not set. */
if(!data->dns.hostcache ||
(data->dns.hostcachetype == HCACHE_NONE)) {
data->dns.hostcache = &multi->hostcache;
data->dns.hostcachetype = HCACHE_MULTI;
}
/* Point to the shared or multi handle connection cache */
if(data->share && (data->share->specifier & (1<< CURL_LOCK_DATA_CONNECT)))
data->state.conn_cache = &data->share->conn_cache;
else
data->state.conn_cache = &multi->conn_cache;
#ifdef USE_LIBPSL
/* Do the same for PSL. */
if(data->share && (data->share->specifier & (1 << CURL_LOCK_DATA_PSL)))
data->psl = &data->share->psl;
else
data->psl = &multi->psl;
#endif
/* We add the new entry last in the list. */
data->next = NULL; /* end of the line */
if(multi->easyp) {
struct Curl_easy *last = multi->easylp;
last->next = data;
data->prev = last;
multi->easylp = data; /* the new last node */
}
else {
/* first node, make prev NULL! */
data->prev = NULL;
multi->easylp = multi->easyp = data; /* both first and last */
}
/* make the Curl_easy refer back to this multi handle */
data->multi = multi;
/* Set the timeout for this handle to expire really soon so that it will
be taken care of even when this handle is added in the midst of operation
when only the curl_multi_socket() API is used. During that flow, only
sockets that time-out or have actions will be dealt with. Since this
handle has no action yet, we make sure it times out to get things to
happen. */
Curl_expire(data, 0, EXPIRE_RUN_NOW);
/* increase the node-counter */
multi->num_easy++;
/* increase the alive-counter */
multi->num_alive++;
/* A somewhat crude work-around for a little glitch in Curl_update_timer()
that happens if the lastcall time is set to the same time when the handle
is removed as when the next handle is added, as then the check in
Curl_update_timer() that prevents calling the application multiple times
with the same timer info will not trigger and then the new handle's
timeout will not be notified to the app.
The work-around is thus simply to clear the 'lastcall' variable to force
Curl_update_timer() to always trigger a callback to the app when a new
easy handle is added */
memset(&multi->timer_lastcall, 0, sizeof(multi->timer_lastcall));
CONNCACHE_LOCK(data);
/* The closure handle only ever has default timeouts set. To improve the
state somewhat we clone the timeouts from each added handle so that the
closure handle always has the same timeouts as the most recently added
easy handle. */
data->state.conn_cache->closure_handle->set.timeout = data->set.timeout;
data->state.conn_cache->closure_handle->set.server_response_timeout =
data->set.server_response_timeout;
data->state.conn_cache->closure_handle->set.no_signal =
data->set.no_signal;
CONNCACHE_UNLOCK(data);
Curl_update_timer(multi);
return CURLM_OK;
}
benchmarks/pairs/vfc/curl-cve-2020-8231-curl_open/fixed.c
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/* Provenance: curl/curl Curl_open (fixed).
* repo: curl/curl
* commit: 3c9e021f86872baae412a427e807fbfa2f3e8a22
* parent: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
* commit_url: https://github.com/curl/curl/commit/3c9e021f86872baae412a427e807fbfa2f3e8a22
* cve: CVE-2020-8231
* license: curl
* function: Curl_open
* relpath: lib/url.c
*/
* Curl_open()
*
* @param curl is a pointer to a sessionhandle pointer that gets set by this
* function.
* @return CURLcode
*/
CURLcode Curl_open(struct Curl_easy **curl)
{
CURLcode result;
struct Curl_easy *data;
/* Very simple start-up: alloc the struct, init it with zeroes and return */
data = calloc(1, sizeof(struct Curl_easy));
if(!data) {
/* this is a very serious error */
DEBUGF(fprintf(stderr, "Error: calloc of Curl_easy failed\n"));
return CURLE_OUT_OF_MEMORY;
}
data->magic = CURLEASY_MAGIC_NUMBER;
result = Curl_resolver_init(data, &data->state.resolver);
if(result) {
DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
free(data);
return result;
}
result = Curl_init_userdefined(data);
if(!result) {
Curl_dyn_init(&data->state.headerb, CURL_MAX_HTTP_HEADER);
Curl_convert_init(data);
Curl_initinfo(data);
/* most recent connection is not yet defined */
data->state.lastconnect_id = -1;
data->progress.flags |= PGRS_HIDE;
data->state.current_speed = -1; /* init to negative == impossible */
}
if(result) {
Curl_resolver_cleanup(data->state.resolver);
Curl_dyn_free(&data->state.headerb);
Curl_freeset(data);
free(data);
data = NULL;
}
else
*curl = data;
return result;
}
benchmarks/pairs/vfc/curl-cve-2020-8231-curl_open/vuln.c
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/* Provenance: curl/curl Curl_open (vuln).
* repo: curl/curl
* commit: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
* parent: 687908c6e6332b2bf4ba74b271e795f9c65a5a61
* commit_url: https://github.com/curl/curl/commit/3c9e021f86872baae412a427e807fbfa2f3e8a22
* cve: CVE-2020-8231
* license: curl
* function: Curl_open
* relpath: lib/url.c
*/
* Curl_open()
*
* @param curl is a pointer to a sessionhandle pointer that gets set by this
* function.
* @return CURLcode
*/
CURLcode Curl_open(struct Curl_easy **curl)
{
CURLcode result;
struct Curl_easy *data;
/* Very simple start-up: alloc the struct, init it with zeroes and return */
data = calloc(1, sizeof(struct Curl_easy));
if(!data) {
/* this is a very serious error */
DEBUGF(fprintf(stderr, "Error: calloc of Curl_easy failed\n"));
return CURLE_OUT_OF_MEMORY;
}
data->magic = CURLEASY_MAGIC_NUMBER;
result = Curl_resolver_init(data, &data->state.resolver);
if(result) {
DEBUGF(fprintf(stderr, "Error: resolver_init failed\n"));
free(data);
return result;
}
result = Curl_init_userdefined(data);
if(!result) {
Curl_dyn_init(&data->state.headerb, CURL_MAX_HTTP_HEADER);
Curl_convert_init(data);
Curl_initinfo(data);
/* most recent connection is not yet defined */
data->state.lastconnect = NULL;
data->progress.flags |= PGRS_HIDE;
data->state.current_speed = -1; /* init to negative == impossible */
}
if(result) {
Curl_resolver_cleanup(data->state.resolver);
Curl_dyn_free(&data->state.headerb);
Curl_freeset(data);
free(data);
data = NULL;
}
else
*curl = data;
return result;
}
benchmarks/pairs/vfc/curl-cve-2020-8284-config_init/fixed.c
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/* Provenance: curl/curl config_init (fixed).
* repo: curl/curl
* commit: ec9cc725d598ac77de7b6df8afeec292b3c8ad46
* parent: abd846c374c5269809ce11740754bc6f00a0b193
* commit_url: https://github.com/curl/curl/commit/ec9cc725d598ac77de7b6df8afeec292b3c8ad46
* cve: CVE-2020-8284
* license: curl
* function: config_init
* relpath: src/tool_cfgable.c
*/
void config_init(struct OperationConfig *config)
{
memset(config, 0, sizeof(struct OperationConfig));
config->postfieldsize = -1;
config->use_httpget = FALSE;
config->create_dirs = FALSE;
config->maxredirs = DEFAULT_MAXREDIRS;
config->proto = CURLPROTO_ALL;
config->proto_present = FALSE;
config->proto_redir = CURLPROTO_ALL & /* All except FILE, SCP and SMB */
~(CURLPROTO_FILE | CURLPROTO_SCP | CURLPROTO_SMB |
CURLPROTO_SMBS);
config->proto_redir_present = FALSE;
config->proto_default = NULL;
config->tcp_nodelay = TRUE; /* enabled by default */
config->happy_eyeballs_timeout_ms = CURL_HET_DEFAULT;
config->http09_allowed = FALSE;
config->ftp_skip_ip = TRUE;
}
benchmarks/pairs/vfc/curl-cve-2020-8284-config_init/vuln.c
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/* Provenance: curl/curl config_init (vuln).
* repo: curl/curl
* commit: abd846c374c5269809ce11740754bc6f00a0b193
* parent: abd846c374c5269809ce11740754bc6f00a0b193
* commit_url: https://github.com/curl/curl/commit/ec9cc725d598ac77de7b6df8afeec292b3c8ad46
* cve: CVE-2020-8284
* license: curl
* function: config_init
* relpath: src/tool_cfgable.c
*/
void config_init(struct OperationConfig *config)
{
memset(config, 0, sizeof(struct OperationConfig));
config->postfieldsize = -1;
config->use_httpget = FALSE;
config->create_dirs = FALSE;
config->maxredirs = DEFAULT_MAXREDIRS;
config->proto = CURLPROTO_ALL;
config->proto_present = FALSE;
config->proto_redir = CURLPROTO_ALL & /* All except FILE, SCP and SMB */
~(CURLPROTO_FILE | CURLPROTO_SCP | CURLPROTO_SMB |
CURLPROTO_SMBS);
config->proto_redir_present = FALSE;
config->proto_default = NULL;
config->tcp_nodelay = TRUE; /* enabled by default */
config->happy_eyeballs_timeout_ms = CURL_HET_DEFAULT;
config->http09_allowed = FALSE;
}
benchmarks/pairs/vfc/curl-cve-2020-8284/fixed.c
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/* Provenance: curl/curl Curl_init_userdefined (fixed).
* repo: curl/curl
* commit: ec9cc725d598ac77de7b6df8afeec292b3c8ad46
* parent: abd846c374c5269809ce11740754bc6f00a0b193
* commit_url: https://github.com/curl/curl/commit/ec9cc725d598ac77de7b6df8afeec292b3c8ad46
* cve: CVE-2020-8284
* license: curl
* function: Curl_init_userdefined
* relpath: lib/url.c
*/
CURLcode Curl_init_userdefined(struct Curl_easy *data)
{
struct UserDefined *set = &data->set;
CURLcode result = CURLE_OK;
set->out = stdout; /* default output to stdout */
set->in_set = stdin; /* default input from stdin */
set->err = stderr; /* default stderr to stderr */
/* use fwrite as default function to store output */
set->fwrite_func = (curl_write_callback)fwrite;
/* use fread as default function to read input */
set->fread_func_set = (curl_read_callback)fread;
set->is_fread_set = 0;
set->is_fwrite_set = 0;
set->seek_func = ZERO_NULL;
set->seek_client = ZERO_NULL;
/* conversion callbacks for non-ASCII hosts */
set->convfromnetwork = ZERO_NULL;
set->convtonetwork = ZERO_NULL;
set->convfromutf8 = ZERO_NULL;
set->filesize = -1; /* we don't know the size */
set->postfieldsize = -1; /* unknown size */
set->maxredirs = -1; /* allow any amount by default */
set->method = HTTPREQ_GET; /* Default HTTP request */
set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
#ifndef CURL_DISABLE_FTP
set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
set->ftp_filemethod = FTPFILE_MULTICWD;
set->ftp_skip_ip = TRUE; /* skip PASV IP by default */
#endif
set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
/* Set the default size of the SSL session ID cache */
set->general_ssl.max_ssl_sessions = 5;
set->proxyport = 0;
set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
/* SOCKS5 proxy auth defaults to username/password + GSS-API */
set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI;
/* make libcurl quiet by default: */
set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
Curl_mime_initpart(&set->mimepost, data);
/*
* libcurl 7.10 introduced SSL verification *by default*! This needs to be
* switched off unless wanted.
*/
set->ssl.primary.verifypeer = TRUE;
set->ssl.primary.verifyhost = TRUE;
#ifdef USE_TLS_SRP
set->ssl.authtype = CURL_TLSAUTH_NONE;
#endif
set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
type */
set->ssl.primary.sessionid = TRUE; /* session ID caching enabled by
default */
#ifndef CURL_DISABLE_PROXY
set->proxy_ssl = set->ssl;
#endif
set->new_file_perms = 0644; /* Default permissions */
set->new_directory_perms = 0755; /* Default permissions */
/* for the *protocols fields we don't use the CURLPROTO_ALL convenience
define since we internally only use the lower 16 bits for the passed
in bitmask to not conflict with the private bits */
set->allowed_protocols = CURLPROTO_ALL;
set->redir_protocols = CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_FTP |
CURLPROTO_FTPS;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
/*
* disallow unprotected protection negotiation NEC reference implementation
* seem not to follow rfc1961 section 4.3/4.4
*/
set->socks5_gssapi_nec = FALSE;
#endif
/* Set the default CA cert bundle/path detected/specified at build time.
*
* If Schannel is the selected SSL backend then these locations are
* ignored. We allow setting CA location for schannel only when explicitly
* specified by the user via CURLOPT_CAINFO / --cacert.
*/
if(Curl_ssl_backend() != CURLSSLBACKEND_SCHANNEL) {
#if defined(CURL_CA_BUNDLE)
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_ORIG], CURL_CA_BUNDLE);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_PROXY],
CURL_CA_BUNDLE);
if(result)
return result;
#endif
#if defined(CURL_CA_PATH)
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_ORIG], CURL_CA_PATH);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_PROXY], CURL_CA_PATH);
if(result)
return result;
#endif
}
set->wildcard_enabled = FALSE;
set->chunk_bgn = ZERO_NULL;
set->chunk_end = ZERO_NULL;
set->tcp_keepalive = FALSE;
set->tcp_keepintvl = 60;
set->tcp_keepidle = 60;
set->tcp_fastopen = FALSE;
set->tcp_nodelay = TRUE;
set->ssl_enable_npn = TRUE;
set->ssl_enable_alpn = TRUE;
set->expect_100_timeout = 1000L; /* Wait for a second by default. */
set->sep_headers = TRUE; /* separated header lists by default */
set->buffer_size = READBUFFER_SIZE;
set->upload_buffer_size = UPLOADBUFFER_DEFAULT;
set->happy_eyeballs_timeout = CURL_HET_DEFAULT;
set->fnmatch = ZERO_NULL;
set->upkeep_interval_ms = CURL_UPKEEP_INTERVAL_DEFAULT;
set->maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
set->maxage_conn = 118;
set->http09_allowed = FALSE;
set->httpversion =
#ifdef USE_NGHTTP2
CURL_HTTP_VERSION_2TLS
#else
CURL_HTTP_VERSION_1_1
#endif
;
Curl_http2_init_userset(set);
return result;
}
benchmarks/pairs/vfc/curl-cve-2020-8284/vuln.c
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/* Provenance: curl/curl Curl_init_userdefined (vuln).
* repo: curl/curl
* commit: abd846c374c5269809ce11740754bc6f00a0b193
* parent: abd846c374c5269809ce11740754bc6f00a0b193
* commit_url: https://github.com/curl/curl/commit/ec9cc725d598ac77de7b6df8afeec292b3c8ad46
* cve: CVE-2020-8284
* license: curl
* function: Curl_init_userdefined
* relpath: lib/url.c
*/
CURLcode Curl_init_userdefined(struct Curl_easy *data)
{
struct UserDefined *set = &data->set;
CURLcode result = CURLE_OK;
set->out = stdout; /* default output to stdout */
set->in_set = stdin; /* default input from stdin */
set->err = stderr; /* default stderr to stderr */
/* use fwrite as default function to store output */
set->fwrite_func = (curl_write_callback)fwrite;
/* use fread as default function to read input */
set->fread_func_set = (curl_read_callback)fread;
set->is_fread_set = 0;
set->is_fwrite_set = 0;
set->seek_func = ZERO_NULL;
set->seek_client = ZERO_NULL;
/* conversion callbacks for non-ASCII hosts */
set->convfromnetwork = ZERO_NULL;
set->convtonetwork = ZERO_NULL;
set->convfromutf8 = ZERO_NULL;
set->filesize = -1; /* we don't know the size */
set->postfieldsize = -1; /* unknown size */
set->maxredirs = -1; /* allow any amount by default */
set->method = HTTPREQ_GET; /* Default HTTP request */
set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
#ifndef CURL_DISABLE_FTP
set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
set->ftp_filemethod = FTPFILE_MULTICWD;
#endif
set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
/* Set the default size of the SSL session ID cache */
set->general_ssl.max_ssl_sessions = 5;
set->proxyport = 0;
set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
/* SOCKS5 proxy auth defaults to username/password + GSS-API */
set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI;
/* make libcurl quiet by default: */
set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
Curl_mime_initpart(&set->mimepost, data);
/*
* libcurl 7.10 introduced SSL verification *by default*! This needs to be
* switched off unless wanted.
*/
set->ssl.primary.verifypeer = TRUE;
set->ssl.primary.verifyhost = TRUE;
#ifdef USE_TLS_SRP
set->ssl.authtype = CURL_TLSAUTH_NONE;
#endif
set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
type */
set->ssl.primary.sessionid = TRUE; /* session ID caching enabled by
default */
#ifndef CURL_DISABLE_PROXY
set->proxy_ssl = set->ssl;
#endif
set->new_file_perms = 0644; /* Default permissions */
set->new_directory_perms = 0755; /* Default permissions */
/* for the *protocols fields we don't use the CURLPROTO_ALL convenience
define since we internally only use the lower 16 bits for the passed
in bitmask to not conflict with the private bits */
set->allowed_protocols = CURLPROTO_ALL;
set->redir_protocols = CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_FTP |
CURLPROTO_FTPS;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
/*
* disallow unprotected protection negotiation NEC reference implementation
* seem not to follow rfc1961 section 4.3/4.4
*/
set->socks5_gssapi_nec = FALSE;
#endif
/* Set the default CA cert bundle/path detected/specified at build time.
*
* If Schannel is the selected SSL backend then these locations are
* ignored. We allow setting CA location for schannel only when explicitly
* specified by the user via CURLOPT_CAINFO / --cacert.
*/
if(Curl_ssl_backend() != CURLSSLBACKEND_SCHANNEL) {
#if defined(CURL_CA_BUNDLE)
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_ORIG], CURL_CA_BUNDLE);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_PROXY],
CURL_CA_BUNDLE);
if(result)
return result;
#endif
#if defined(CURL_CA_PATH)
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_ORIG], CURL_CA_PATH);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_PROXY], CURL_CA_PATH);
if(result)
return result;
#endif
}
set->wildcard_enabled = FALSE;
set->chunk_bgn = ZERO_NULL;
set->chunk_end = ZERO_NULL;
set->tcp_keepalive = FALSE;
set->tcp_keepintvl = 60;
set->tcp_keepidle = 60;
set->tcp_fastopen = FALSE;
set->tcp_nodelay = TRUE;
set->ssl_enable_npn = TRUE;
set->ssl_enable_alpn = TRUE;
set->expect_100_timeout = 1000L; /* Wait for a second by default. */
set->sep_headers = TRUE; /* separated header lists by default */
set->buffer_size = READBUFFER_SIZE;
set->upload_buffer_size = UPLOADBUFFER_DEFAULT;
set->happy_eyeballs_timeout = CURL_HET_DEFAULT;
set->fnmatch = ZERO_NULL;
set->upkeep_interval_ms = CURL_UPKEEP_INTERVAL_DEFAULT;
set->maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
set->maxage_conn = 118;
set->http09_allowed = FALSE;
set->httpversion =
#ifdef USE_NGHTTP2
CURL_HTTP_VERSION_2TLS
#else
CURL_HTTP_VERSION_1_1
#endif
;
Curl_http2_init_userset(set);
return result;
}
benchmarks/pairs/vfc/curl-cve-2020-8286/fixed.c
+164
View File
@@ -0,0 +1,164 @@
/* Provenance: curl/curl verifystatus (fixed).
* repo: curl/curl
* commit: d9d01672785b8ac04aab1abb6de95fe3072ae199
* parent: 69a358f2186e04cf44698b5100332cbf1ee7f01d
* commit_url: https://github.com/curl/curl/commit/d9d01672785b8ac04aab1abb6de95fe3072ae199
* cve: CVE-2020-8286
* license: curl
* function: verifystatus
* relpath: lib/vtls/openssl.c
*/
!defined(OPENSSL_NO_OCSP)
static CURLcode verifystatus(struct connectdata *conn,
struct ssl_connect_data *connssl)
{
int i, ocsp_status;
unsigned char *status;
const unsigned char *p;
CURLcode result = CURLE_OK;
struct Curl_easy *data = conn->data;
OCSP_RESPONSE *rsp = NULL;
OCSP_BASICRESP *br = NULL;
X509_STORE *st = NULL;
STACK_OF(X509) *ch = NULL;
struct ssl_backend_data *backend = connssl->backend;
X509 *cert;
OCSP_CERTID *id = NULL;
int cert_status, crl_reason;
ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
int ret;
long len = SSL_get_tlsext_status_ocsp_resp(backend->handle, &status);
if(!status) {
failf(data, "No OCSP response received");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
p = status;
rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
if(!rsp) {
failf(data, "Invalid OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
ocsp_status = OCSP_response_status(rsp);
if(ocsp_status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
failf(data, "Invalid OCSP response status: %s (%d)",
OCSP_response_status_str(ocsp_status), ocsp_status);
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
br = OCSP_response_get1_basic(rsp);
if(!br) {
failf(data, "Invalid OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
ch = SSL_get_peer_cert_chain(backend->handle);
st = SSL_CTX_get_cert_store(backend->ctx);
#if ((OPENSSL_VERSION_NUMBER <= 0x1000201fL) /* Fixed after 1.0.2a */ || \
(defined(LIBRESSL_VERSION_NUMBER) && \
LIBRESSL_VERSION_NUMBER <= 0x2040200fL))
/* The authorized responder cert in the OCSP response MUST be signed by the
peer cert's issuer (see RFC6960 section 4.2.2.2). If that's a root cert,
no problem, but if it's an intermediate cert OpenSSL has a bug where it
expects this issuer to be present in the chain embedded in the OCSP
response. So we add it if necessary. */
/* First make sure the peer cert chain includes both a peer and an issuer,
and the OCSP response contains a responder cert. */
if(sk_X509_num(ch) >= 2 && sk_X509_num(br->certs) >= 1) {
X509 *responder = sk_X509_value(br->certs, sk_X509_num(br->certs) - 1);
/* Find issuer of responder cert and add it to the OCSP response chain */
for(i = 0; i < sk_X509_num(ch); i++) {
X509 *issuer = sk_X509_value(ch, i);
if(X509_check_issued(issuer, responder) == X509_V_OK) {
if(!OCSP_basic_add1_cert(br, issuer)) {
failf(data, "Could not add issuer cert to OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
}
}
}
#endif
if(OCSP_basic_verify(br, ch, st, 0) <= 0) {
failf(data, "OCSP response verification failed");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
/* Compute the certificate's ID */
cert = SSL_get_peer_certificate(backend->handle);
if(!cert) {
failf(data, "Error getting peer certficate");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
for(i = 0; i < sk_X509_num(ch); i++) {
X509 *issuer = sk_X509_value(ch, i);
if(X509_check_issued(issuer, cert) == X509_V_OK) {
id = OCSP_cert_to_id(EVP_sha1(), cert, issuer);
break;
}
}
X509_free(cert);
if(!id) {
failf(data, "Error computing OCSP ID");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
/* Find the single OCSP response corresponding to the certificate ID */
ret = OCSP_resp_find_status(br, id, &cert_status, &crl_reason, &rev,
&thisupd, &nextupd);
OCSP_CERTID_free(id);
if(ret != 1) {
failf(data, "Could not find certificate ID in OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
/* Validate the corresponding single OCSP response */
if(!OCSP_check_validity(thisupd, nextupd, 300L, -1L)) {
failf(data, "OCSP response has expired");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
infof(data, "SSL certificate status: %s (%d)\n",
OCSP_cert_status_str(cert_status), cert_status);
switch(cert_status) {
case V_OCSP_CERTSTATUS_GOOD:
break;
case V_OCSP_CERTSTATUS_REVOKED:
result = CURLE_SSL_INVALIDCERTSTATUS;
failf(data, "SSL certificate revocation reason: %s (%d)",
OCSP_crl_reason_str(crl_reason), crl_reason);
goto end;
case V_OCSP_CERTSTATUS_UNKNOWN:
default:
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
end:
if(br)
OCSP_BASICRESP_free(br);
OCSP_RESPONSE_free(rsp);
return result;
}
benchmarks/pairs/vfc/curl-cve-2020-8286/vuln.c
+139
View File
@@ -0,0 +1,139 @@
/* Provenance: curl/curl verifystatus (vuln).
* repo: curl/curl
* commit: 69a358f2186e04cf44698b5100332cbf1ee7f01d
* parent: 69a358f2186e04cf44698b5100332cbf1ee7f01d
* commit_url: https://github.com/curl/curl/commit/d9d01672785b8ac04aab1abb6de95fe3072ae199
* cve: CVE-2020-8286
* license: curl
* function: verifystatus
* relpath: lib/vtls/openssl.c
*/
!defined(OPENSSL_NO_OCSP)
static CURLcode verifystatus(struct connectdata *conn,
struct ssl_connect_data *connssl)
{
int i, ocsp_status;
unsigned char *status;
const unsigned char *p;
CURLcode result = CURLE_OK;
struct Curl_easy *data = conn->data;
OCSP_RESPONSE *rsp = NULL;
OCSP_BASICRESP *br = NULL;
X509_STORE *st = NULL;
STACK_OF(X509) *ch = NULL;
struct ssl_backend_data *backend = connssl->backend;
long len = SSL_get_tlsext_status_ocsp_resp(backend->handle, &status);
if(!status) {
failf(data, "No OCSP response received");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
p = status;
rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
if(!rsp) {
failf(data, "Invalid OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
ocsp_status = OCSP_response_status(rsp);
if(ocsp_status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
failf(data, "Invalid OCSP response status: %s (%d)",
OCSP_response_status_str(ocsp_status), ocsp_status);
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
br = OCSP_response_get1_basic(rsp);
if(!br) {
failf(data, "Invalid OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
ch = SSL_get_peer_cert_chain(backend->handle);
st = SSL_CTX_get_cert_store(backend->ctx);
#if ((OPENSSL_VERSION_NUMBER <= 0x1000201fL) /* Fixed after 1.0.2a */ || \
(defined(LIBRESSL_VERSION_NUMBER) && \
LIBRESSL_VERSION_NUMBER <= 0x2040200fL))
/* The authorized responder cert in the OCSP response MUST be signed by the
peer cert's issuer (see RFC6960 section 4.2.2.2). If that's a root cert,
no problem, but if it's an intermediate cert OpenSSL has a bug where it
expects this issuer to be present in the chain embedded in the OCSP
response. So we add it if necessary. */
/* First make sure the peer cert chain includes both a peer and an issuer,
and the OCSP response contains a responder cert. */
if(sk_X509_num(ch) >= 2 && sk_X509_num(br->certs) >= 1) {
X509 *responder = sk_X509_value(br->certs, sk_X509_num(br->certs) - 1);
/* Find issuer of responder cert and add it to the OCSP response chain */
for(i = 0; i < sk_X509_num(ch); i++) {
X509 *issuer = sk_X509_value(ch, i);
if(X509_check_issued(issuer, responder) == X509_V_OK) {
if(!OCSP_basic_add1_cert(br, issuer)) {
failf(data, "Could not add issuer cert to OCSP response");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
}
}
}
#endif
if(OCSP_basic_verify(br, ch, st, 0) <= 0) {
failf(data, "OCSP response verification failed");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
for(i = 0; i < OCSP_resp_count(br); i++) {
int cert_status, crl_reason;
OCSP_SINGLERESP *single = NULL;
ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
single = OCSP_resp_get0(br, i);
if(!single)
continue;
cert_status = OCSP_single_get0_status(single, &crl_reason, &rev,
&thisupd, &nextupd);
if(!OCSP_check_validity(thisupd, nextupd, 300L, -1L)) {
failf(data, "OCSP response has expired");
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
infof(data, "SSL certificate status: %s (%d)\n",
OCSP_cert_status_str(cert_status), cert_status);
switch(cert_status) {
case V_OCSP_CERTSTATUS_GOOD:
break;
case V_OCSP_CERTSTATUS_REVOKED:
result = CURLE_SSL_INVALIDCERTSTATUS;
failf(data, "SSL certificate revocation reason: %s (%d)",
OCSP_crl_reason_str(crl_reason), crl_reason);
goto end;
case V_OCSP_CERTSTATUS_UNKNOWN:
result = CURLE_SSL_INVALIDCERTSTATUS;
goto end;
}
}
end:
if(br)
OCSP_BASICRESP_free(br);
OCSP_RESPONSE_free(rsp);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22876/fixed.c
+247
View File
@@ -0,0 +1,247 @@
/* Provenance: curl/curl Curl_follow (fixed).
* repo: curl/curl
* commit: 7214288898f5625a6cc196e22a74232eada7861c
* parent: 184ffc0bdfcab17eb96d1dd64f9c0cecc139e3e9
* commit_url: https://github.com/curl/curl/commit/7214288898f5625a6cc196e22a74232eada7861c
* cve: CVE-2021-22876
* license: curl
* function: Curl_follow
* relpath: lib/transfer.c
*/
* Curl_follow() handles the URL redirect magic. Pass in the 'newurl' string
* as given by the remote server and set up the new URL to request.
*
* This function DOES NOT FREE the given url.
*/
CURLcode Curl_follow(struct Curl_easy *data,
char *newurl, /* the Location: string */
followtype type) /* see transfer.h */
{
#ifdef CURL_DISABLE_HTTP
(void)data;
(void)newurl;
(void)type;
/* Location: following will not happen when HTTP is disabled */
return CURLE_TOO_MANY_REDIRECTS;
#else
/* Location: redirect */
bool disallowport = FALSE;
bool reachedmax = FALSE;
CURLUcode uc;
DEBUGASSERT(type != FOLLOW_NONE);
if(type == FOLLOW_REDIR) {
if((data->set.maxredirs != -1) &&
(data->state.followlocation >= data->set.maxredirs)) {
reachedmax = TRUE;
type = FOLLOW_FAKE; /* switch to fake to store the would-be-redirected
to URL */
}
else {
/* mark the next request as a followed location: */
data->state.this_is_a_follow = TRUE;
data->state.followlocation++; /* count location-followers */
if(data->set.http_auto_referer) {
CURLU *u;
char *referer;
/* We are asked to automatically set the previous URL as the referer
when we get the next URL. We pick the ->url field, which may or may
not be 100% correct */
if(data->state.referer_alloc) {
Curl_safefree(data->state.referer);
data->state.referer_alloc = FALSE;
}
/* Make a copy of the URL without crenditals and fragment */
u = curl_url();
if(!u)
return CURLE_OUT_OF_MEMORY;
uc = curl_url_set(u, CURLUPART_URL, data->state.url, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_FRAGMENT, NULL, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_USER, NULL, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_PASSWORD, NULL, 0);
if(!uc)
uc = curl_url_get(u, CURLUPART_URL, &referer, 0);
curl_url_cleanup(u);
if(uc || referer == NULL)
return CURLE_OUT_OF_MEMORY;
data->state.referer = referer;
data->state.referer_alloc = TRUE; /* yes, free this later */
}
}
}
if((type != FOLLOW_RETRY) &&
(data->req.httpcode != 401) && (data->req.httpcode != 407) &&
Curl_is_absolute_url(newurl, NULL, MAX_SCHEME_LEN))
/* If this is not redirect due to a 401 or 407 response and an absolute
URL: don't allow a custom port number */
disallowport = TRUE;
DEBUGASSERT(data->state.uh);
uc = curl_url_set(data->state.uh, CURLUPART_URL, newurl,
(type == FOLLOW_FAKE) ? CURLU_NON_SUPPORT_SCHEME :
((type == FOLLOW_REDIR) ? CURLU_URLENCODE : 0) );
if(uc) {
if(type != FOLLOW_FAKE)
return Curl_uc_to_curlcode(uc);
/* the URL could not be parsed for some reason, but since this is FAKE
mode, just duplicate the field as-is */
newurl = strdup(newurl);
if(!newurl)
return CURLE_OUT_OF_MEMORY;
}
else {
uc = curl_url_get(data->state.uh, CURLUPART_URL, &newurl, 0);
if(uc)
return Curl_uc_to_curlcode(uc);
}
if(type == FOLLOW_FAKE) {
/* we're only figuring out the new url if we would've followed locations
but now we're done so we can get out! */
data->info.wouldredirect = newurl;
if(reachedmax) {
failf(data, "Maximum (%ld) redirects followed", data->set.maxredirs);
return CURLE_TOO_MANY_REDIRECTS;
}
return CURLE_OK;
}
if(disallowport)
data->state.allow_port = FALSE;
if(data->state.url_alloc)
Curl_safefree(data->state.url);
data->state.url = newurl;
data->state.url_alloc = TRUE;
infof(data, "Issue another request to this URL: '%s'\n", data->state.url);
/*
* We get here when the HTTP code is 300-399 (and 401). We need to perform
* differently based on exactly what return code there was.
*
* News from 7.10.6: we can also get here on a 401 or 407, in case we act on
* a HTTP (proxy-) authentication scheme other than Basic.
*/
switch(data->info.httpcode) {
/* 401 - Act on a WWW-Authenticate, we keep on moving and do the
Authorization: XXXX header in the HTTP request code snippet */
/* 407 - Act on a Proxy-Authenticate, we keep on moving and do the
Proxy-Authorization: XXXX header in the HTTP request code snippet */
/* 300 - Multiple Choices */
/* 306 - Not used */
/* 307 - Temporary Redirect */
default: /* for all above (and the unknown ones) */
/* Some codes are explicitly mentioned since I've checked RFC2616 and they
* seem to be OK to POST to.
*/
break;
case 301: /* Moved Permanently */
/* (quote from RFC7231, section 6.4.2)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_301)) {
infof(data, "Switch from POST to GET\n");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 302: /* Found */
/* (quote from RFC7231, section 6.4.3)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_302)) {
infof(data, "Switch from POST to GET\n");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 303: /* See Other */
/* 'See Other' location is not the resource but a substitute for the
* resource. In this case we switch the method to GET/HEAD, unless the
* method is POST and the user specified to keep it as POST.
* https://github.com/curl/curl/issues/5237#issuecomment-614641049
*/
if(data->state.httpreq != HTTPREQ_GET &&
((data->state.httpreq != HTTPREQ_POST &&
data->state.httpreq != HTTPREQ_POST_FORM &&
data->state.httpreq != HTTPREQ_POST_MIME) ||
!(data->set.keep_post & CURL_REDIR_POST_303))) {
data->state.httpreq = HTTPREQ_GET;
data->set.upload = false;
infof(data, "Switch to %s\n",
data->set.opt_no_body?"HEAD":"GET");
}
break;
case 304: /* Not Modified */
/* 304 means we did a conditional request and it was "Not modified".
* We shouldn't get any Location: header in this response!
*/
break;
case 305: /* Use Proxy */
/* (quote from RFC2616, section 10.3.6):
* "The requested resource MUST be accessed through the proxy given
* by the Location field. The Location field gives the URI of the
* proxy. The recipient is expected to repeat this single request
* via the proxy. 305 responses MUST only be generated by origin
* servers."
*/
break;
}
Curl_pgrsTime(data, TIMER_REDIRECT);
Curl_pgrsResetTransferSizes(data);
return CURLE_OK;
#endif /* CURL_DISABLE_HTTP */
}
benchmarks/pairs/vfc/curl-cve-2021-22876/vuln.c
+226
View File
@@ -0,0 +1,226 @@
/* Provenance: curl/curl Curl_follow (vuln).
* repo: curl/curl
* commit: 184ffc0bdfcab17eb96d1dd64f9c0cecc139e3e9
* parent: 184ffc0bdfcab17eb96d1dd64f9c0cecc139e3e9
* commit_url: https://github.com/curl/curl/commit/7214288898f5625a6cc196e22a74232eada7861c
* cve: CVE-2021-22876
* license: curl
* function: Curl_follow
* relpath: lib/transfer.c
*/
* Curl_follow() handles the URL redirect magic. Pass in the 'newurl' string
* as given by the remote server and set up the new URL to request.
*
* This function DOES NOT FREE the given url.
*/
CURLcode Curl_follow(struct Curl_easy *data,
char *newurl, /* the Location: string */
followtype type) /* see transfer.h */
{
#ifdef CURL_DISABLE_HTTP
(void)data;
(void)newurl;
(void)type;
/* Location: following will not happen when HTTP is disabled */
return CURLE_TOO_MANY_REDIRECTS;
#else
/* Location: redirect */
bool disallowport = FALSE;
bool reachedmax = FALSE;
CURLUcode uc;
DEBUGASSERT(type != FOLLOW_NONE);
if(type == FOLLOW_REDIR) {
if((data->set.maxredirs != -1) &&
(data->state.followlocation >= data->set.maxredirs)) {
reachedmax = TRUE;
type = FOLLOW_FAKE; /* switch to fake to store the would-be-redirected
to URL */
}
else {
/* mark the next request as a followed location: */
data->state.this_is_a_follow = TRUE;
data->state.followlocation++; /* count location-followers */
if(data->set.http_auto_referer) {
/* We are asked to automatically set the previous URL as the referer
when we get the next URL. We pick the ->url field, which may or may
not be 100% correct */
if(data->state.referer_alloc) {
Curl_safefree(data->state.referer);
data->state.referer_alloc = FALSE;
}
data->state.referer = strdup(data->state.url);
if(!data->state.referer)
return CURLE_OUT_OF_MEMORY;
data->state.referer_alloc = TRUE; /* yes, free this later */
}
}
}
if((type != FOLLOW_RETRY) &&
(data->req.httpcode != 401) && (data->req.httpcode != 407) &&
Curl_is_absolute_url(newurl, NULL, MAX_SCHEME_LEN))
/* If this is not redirect due to a 401 or 407 response and an absolute
URL: don't allow a custom port number */
disallowport = TRUE;
DEBUGASSERT(data->state.uh);
uc = curl_url_set(data->state.uh, CURLUPART_URL, newurl,
(type == FOLLOW_FAKE) ? CURLU_NON_SUPPORT_SCHEME :
((type == FOLLOW_REDIR) ? CURLU_URLENCODE : 0) );
if(uc) {
if(type != FOLLOW_FAKE)
return Curl_uc_to_curlcode(uc);
/* the URL could not be parsed for some reason, but since this is FAKE
mode, just duplicate the field as-is */
newurl = strdup(newurl);
if(!newurl)
return CURLE_OUT_OF_MEMORY;
}
else {
uc = curl_url_get(data->state.uh, CURLUPART_URL, &newurl, 0);
if(uc)
return Curl_uc_to_curlcode(uc);
}
if(type == FOLLOW_FAKE) {
/* we're only figuring out the new url if we would've followed locations
but now we're done so we can get out! */
data->info.wouldredirect = newurl;
if(reachedmax) {
failf(data, "Maximum (%ld) redirects followed", data->set.maxredirs);
return CURLE_TOO_MANY_REDIRECTS;
}
return CURLE_OK;
}
if(disallowport)
data->state.allow_port = FALSE;
if(data->state.url_alloc)
Curl_safefree(data->state.url);
data->state.url = newurl;
data->state.url_alloc = TRUE;
infof(data, "Issue another request to this URL: '%s'\n", data->state.url);
/*
* We get here when the HTTP code is 300-399 (and 401). We need to perform
* differently based on exactly what return code there was.
*
* News from 7.10.6: we can also get here on a 401 or 407, in case we act on
* a HTTP (proxy-) authentication scheme other than Basic.
*/
switch(data->info.httpcode) {
/* 401 - Act on a WWW-Authenticate, we keep on moving and do the
Authorization: XXXX header in the HTTP request code snippet */
/* 407 - Act on a Proxy-Authenticate, we keep on moving and do the
Proxy-Authorization: XXXX header in the HTTP request code snippet */
/* 300 - Multiple Choices */
/* 306 - Not used */
/* 307 - Temporary Redirect */
default: /* for all above (and the unknown ones) */
/* Some codes are explicitly mentioned since I've checked RFC2616 and they
* seem to be OK to POST to.
*/
break;
case 301: /* Moved Permanently */
/* (quote from RFC7231, section 6.4.2)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_301)) {
infof(data, "Switch from POST to GET\n");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 302: /* Found */
/* (quote from RFC7231, section 6.4.3)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_302)) {
infof(data, "Switch from POST to GET\n");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 303: /* See Other */
/* 'See Other' location is not the resource but a substitute for the
* resource. In this case we switch the method to GET/HEAD, unless the
* method is POST and the user specified to keep it as POST.
* https://github.com/curl/curl/issues/5237#issuecomment-614641049
*/
if(data->state.httpreq != HTTPREQ_GET &&
((data->state.httpreq != HTTPREQ_POST &&
data->state.httpreq != HTTPREQ_POST_FORM &&
data->state.httpreq != HTTPREQ_POST_MIME) ||
!(data->set.keep_post & CURL_REDIR_POST_303))) {
data->state.httpreq = HTTPREQ_GET;
data->set.upload = false;
infof(data, "Switch to %s\n",
data->set.opt_no_body?"HEAD":"GET");
}
break;
case 304: /* Not Modified */
/* 304 means we did a conditional request and it was "Not modified".
* We shouldn't get any Location: header in this response!
*/
break;
case 305: /* Use Proxy */
/* (quote from RFC2616, section 10.3.6):
* "The requested resource MUST be accessed through the proxy given
* by the Location field. The Location field gives the URI of the
* proxy. The recipient is expected to repeat this single request
* via the proxy. 305 responses MUST only be generated by origin
* servers."
*/
break;
}
Curl_pgrsTime(data, TIMER_REDIRECT);
Curl_pgrsResetTransferSizes(data);
return CURLE_OK;
#endif /* CURL_DISABLE_HTTP */
}
benchmarks/pairs/vfc/curl-cve-2021-22890/fixed.c
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/* Provenance: curl/curl bearssl_connect_step1 (fixed).
* repo: curl/curl
* commit: b09c8ee15771c614c4bf3ddac893cdb12187c844
* parent: 7214288898f5625a6cc196e22a74232eada7861c
* commit_url: https://github.com/curl/curl/commit/b09c8ee15771c614c4bf3ddac893cdb12187c844
* cve: CVE-2021-22890
* license: curl
* function: bearssl_connect_step1
* relpath: lib/vtls/bearssl.c
*/
static CURLcode bearssl_connect_step1(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
const char * const ssl_cafile = SSL_CONN_CONFIG(CAfile);
#ifndef CURL_DISABLE_PROXY
const char *hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
conn->host.name;
#else
const char *hostname = conn->host.name;
#endif
const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
const bool verifyhost = SSL_CONN_CONFIG(verifyhost);
CURLcode ret;
unsigned version_min, version_max;
#ifdef ENABLE_IPV6
struct in6_addr addr;
#else
struct in_addr addr;
#endif
switch(SSL_CONN_CONFIG(version)) {
case CURL_SSLVERSION_SSLv2:
failf(data, "BearSSL does not support SSLv2");
return CURLE_SSL_CONNECT_ERROR;
case CURL_SSLVERSION_SSLv3:
failf(data, "BearSSL does not support SSLv3");
return CURLE_SSL_CONNECT_ERROR;
case CURL_SSLVERSION_TLSv1_0:
version_min = BR_TLS10;
version_max = BR_TLS10;
break;
case CURL_SSLVERSION_TLSv1_1:
version_min = BR_TLS11;
version_max = BR_TLS11;
break;
case CURL_SSLVERSION_TLSv1_2:
version_min = BR_TLS12;
version_max = BR_TLS12;
break;
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1:
version_min = BR_TLS10;
version_max = BR_TLS12;
break;
default:
failf(data, "BearSSL: unknown CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
if(ssl_cafile) {
ret = load_cafile(ssl_cafile, &backend->anchors, &backend->anchors_len);
if(ret != CURLE_OK) {
if(verifypeer) {
failf(data, "error setting certificate verify locations."
" CAfile: %s", ssl_cafile);
return ret;
}
infof(data, "error setting certificate verify locations,"
" continuing anyway:\n");
}
}
/* initialize SSL context */
br_ssl_client_init_full(&backend->ctx, &backend->x509.minimal,
backend->anchors, backend->anchors_len);
br_ssl_engine_set_versions(&backend->ctx.eng, version_min, version_max);
br_ssl_engine_set_buffer(&backend->ctx.eng, backend->buf,
sizeof(backend->buf), 1);
/* initialize X.509 context */
backend->x509.vtable = &x509_vtable;
backend->x509.verifypeer = verifypeer;
backend->x509.verifyhost = verifyhost;
br_ssl_engine_set_x509(&backend->ctx.eng, &backend->x509.vtable);
if(SSL_SET_OPTION(primary.sessionid)) {
void *session;
Curl_ssl_sessionid_lock(data);
if(!Curl_ssl_getsessionid(data, conn, SSL_IS_PROXY() ? TRUE : FALSE,
&session, NULL, sockindex)) {
br_ssl_engine_set_session_parameters(&backend->ctx.eng, session);
infof(data, "BearSSL: re-using session ID\n");
}
Curl_ssl_sessionid_unlock(data);
}
if(conn->bits.tls_enable_alpn) {
int cur = 0;
/* NOTE: when adding more protocols here, increase the size of the
* protocols array in `struct ssl_backend_data`.
*/
#ifdef USE_NGHTTP2
if(data->state.httpversion >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
backend->protocols[cur++] = NGHTTP2_PROTO_VERSION_ID;
infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID);
}
#endif
backend->protocols[cur++] = ALPN_HTTP_1_1;
infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
br_ssl_engine_set_protocol_names(&backend->ctx.eng,
backend->protocols, cur);
}
if((1 == Curl_inet_pton(AF_INET, hostname, &addr))
#ifdef ENABLE_IPV6
|| (1 == Curl_inet_pton(AF_INET6, hostname, &addr))
#endif
) {
if(verifyhost) {
failf(data, "BearSSL: "
"host verification of IP address is not supported");
return CURLE_PEER_FAILED_VERIFICATION;
}
hostname = NULL;
}
if(!br_ssl_client_reset(&backend->ctx, hostname, 0))
return CURLE_FAILED_INIT;
backend->active = TRUE;
connssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2021-22890/vuln.c
+145
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/* Provenance: curl/curl bearssl_connect_step1 (vuln).
* repo: curl/curl
* commit: 7214288898f5625a6cc196e22a74232eada7861c
* parent: 7214288898f5625a6cc196e22a74232eada7861c
* commit_url: https://github.com/curl/curl/commit/b09c8ee15771c614c4bf3ddac893cdb12187c844
* cve: CVE-2021-22890
* license: curl
* function: bearssl_connect_step1
* relpath: lib/vtls/bearssl.c
*/
static CURLcode bearssl_connect_step1(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
const char * const ssl_cafile = SSL_CONN_CONFIG(CAfile);
#ifndef CURL_DISABLE_PROXY
const char *hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
conn->host.name;
#else
const char *hostname = conn->host.name;
#endif
const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
const bool verifyhost = SSL_CONN_CONFIG(verifyhost);
CURLcode ret;
unsigned version_min, version_max;
#ifdef ENABLE_IPV6
struct in6_addr addr;
#else
struct in_addr addr;
#endif
switch(SSL_CONN_CONFIG(version)) {
case CURL_SSLVERSION_SSLv2:
failf(data, "BearSSL does not support SSLv2");
return CURLE_SSL_CONNECT_ERROR;
case CURL_SSLVERSION_SSLv3:
failf(data, "BearSSL does not support SSLv3");
return CURLE_SSL_CONNECT_ERROR;
case CURL_SSLVERSION_TLSv1_0:
version_min = BR_TLS10;
version_max = BR_TLS10;
break;
case CURL_SSLVERSION_TLSv1_1:
version_min = BR_TLS11;
version_max = BR_TLS11;
break;
case CURL_SSLVERSION_TLSv1_2:
version_min = BR_TLS12;
version_max = BR_TLS12;
break;
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1:
version_min = BR_TLS10;
version_max = BR_TLS12;
break;
default:
failf(data, "BearSSL: unknown CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
if(ssl_cafile) {
ret = load_cafile(ssl_cafile, &backend->anchors, &backend->anchors_len);
if(ret != CURLE_OK) {
if(verifypeer) {
failf(data, "error setting certificate verify locations."
" CAfile: %s", ssl_cafile);
return ret;
}
infof(data, "error setting certificate verify locations,"
" continuing anyway:\n");
}
}
/* initialize SSL context */
br_ssl_client_init_full(&backend->ctx, &backend->x509.minimal,
backend->anchors, backend->anchors_len);
br_ssl_engine_set_versions(&backend->ctx.eng, version_min, version_max);
br_ssl_engine_set_buffer(&backend->ctx.eng, backend->buf,
sizeof(backend->buf), 1);
/* initialize X.509 context */
backend->x509.vtable = &x509_vtable;
backend->x509.verifypeer = verifypeer;
backend->x509.verifyhost = verifyhost;
br_ssl_engine_set_x509(&backend->ctx.eng, &backend->x509.vtable);
if(SSL_SET_OPTION(primary.sessionid)) {
void *session;
Curl_ssl_sessionid_lock(data);
if(!Curl_ssl_getsessionid(data, conn, &session, NULL, sockindex)) {
br_ssl_engine_set_session_parameters(&backend->ctx.eng, session);
infof(data, "BearSSL: re-using session ID\n");
}
Curl_ssl_sessionid_unlock(data);
}
if(conn->bits.tls_enable_alpn) {
int cur = 0;
/* NOTE: when adding more protocols here, increase the size of the
* protocols array in `struct ssl_backend_data`.
*/
#ifdef USE_NGHTTP2
if(data->state.httpversion >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
backend->protocols[cur++] = NGHTTP2_PROTO_VERSION_ID;
infof(data, "ALPN, offering %s\n", NGHTTP2_PROTO_VERSION_ID);
}
#endif
backend->protocols[cur++] = ALPN_HTTP_1_1;
infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
br_ssl_engine_set_protocol_names(&backend->ctx.eng,
backend->protocols, cur);
}
if((1 == Curl_inet_pton(AF_INET, hostname, &addr))
#ifdef ENABLE_IPV6
|| (1 == Curl_inet_pton(AF_INET6, hostname, &addr))
#endif
) {
if(verifyhost) {
failf(data, "BearSSL: "
"host verification of IP address is not supported");
return CURLE_PEER_FAILED_VERIFICATION;
}
hostname = NULL;
}
if(!br_ssl_client_reset(&backend->ctx, hostname, 0))
return CURLE_FAILED_INIT;
backend->active = TRUE;
connssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2021-22898/fixed.c
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/* Provenance: curl/curl suboption (fixed).
* repo: curl/curl
* commit: 39ce47f219b09c380b81f89fe54ac586c8db6bde
* parent: bbb71507b7bab52002f9b1e0880bed6a32834511
* commit_url: https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bde
* cve: CVE-2021-22898
* license: curl
* function: suboption
* relpath: lib/telnet.c
*/
* suboption()
*
* Look at the sub-option buffer, and try to be helpful to the other
* side.
*/
static void suboption(struct Curl_easy *data)
{
struct curl_slist *v;
unsigned char temp[2048];
ssize_t bytes_written;
size_t len;
int err;
char varname[128] = "";
char varval[128] = "";
struct TELNET *tn = data->req.p.telnet;
struct connectdata *conn = data->conn;
printsub(data, '<', (unsigned char *)tn->subbuffer, CURL_SB_LEN(tn) + 2);
switch(CURL_SB_GET(tn)) {
case CURL_TELOPT_TTYPE:
len = strlen(tn->subopt_ttype) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_TTYPE,
CURL_TELQUAL_IS, tn->subopt_ttype, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_XDISPLOC:
len = strlen(tn->subopt_xdisploc) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_XDISPLOC,
CURL_TELQUAL_IS, tn->subopt_xdisploc, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_NEW_ENVIRON:
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_NEW_ENVIRON,
CURL_TELQUAL_IS);
len = 4;
for(v = tn->telnet_vars; v; v = v->next) {
size_t tmplen = (strlen(v->data) + 1);
/* Add the variable only if it fits */
if(len + tmplen < (int)sizeof(temp)-6) {
if(sscanf(v->data, "%127[^,],%127s", varname, varval) == 2) {
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%s%c%s", CURL_NEW_ENV_VAR, varname,
CURL_NEW_ENV_VALUE, varval);
len += tmplen;
}
}
}
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%c", CURL_IAC, CURL_SE);
len += 2;
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
}
return;
}
benchmarks/pairs/vfc/curl-cve-2021-22898/vuln.c
+86
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@@ -0,0 +1,86 @@
/* Provenance: curl/curl suboption (vuln).
* repo: curl/curl
* commit: bbb71507b7bab52002f9b1e0880bed6a32834511
* parent: bbb71507b7bab52002f9b1e0880bed6a32834511
* commit_url: https://github.com/curl/curl/commit/39ce47f219b09c380b81f89fe54ac586c8db6bde
* cve: CVE-2021-22898
* license: curl
* function: suboption
* relpath: lib/telnet.c
*/
* suboption()
*
* Look at the sub-option buffer, and try to be helpful to the other
* side.
*/
static void suboption(struct Curl_easy *data)
{
struct curl_slist *v;
unsigned char temp[2048];
ssize_t bytes_written;
size_t len;
int err;
char varname[128] = "";
char varval[128] = "";
struct TELNET *tn = data->req.p.telnet;
struct connectdata *conn = data->conn;
printsub(data, '<', (unsigned char *)tn->subbuffer, CURL_SB_LEN(tn) + 2);
switch(CURL_SB_GET(tn)) {
case CURL_TELOPT_TTYPE:
len = strlen(tn->subopt_ttype) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_TTYPE,
CURL_TELQUAL_IS, tn->subopt_ttype, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_XDISPLOC:
len = strlen(tn->subopt_xdisploc) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_XDISPLOC,
CURL_TELQUAL_IS, tn->subopt_xdisploc, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_NEW_ENVIRON:
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_NEW_ENVIRON,
CURL_TELQUAL_IS);
len = 4;
for(v = tn->telnet_vars; v; v = v->next) {
size_t tmplen = (strlen(v->data) + 1);
/* Add the variable only if it fits */
if(len + tmplen < (int)sizeof(temp)-6) {
if(sscanf(v->data, "%127[^,],%127s", varname, varval)) {
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%s%c%s", CURL_NEW_ENV_VAR, varname,
CURL_NEW_ENV_VALUE, varval);
len += tmplen;
}
}
}
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%c", CURL_IAC, CURL_SE);
len += 2;
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
}
return;
}
benchmarks/pairs/vfc/curl-cve-2021-22901-ossl_connect_step1/fixed.c
+707
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/* Provenance: curl/curl ossl_connect_step1 (fixed).
* repo: curl/curl
* commit: 7f4a9a9b2a49547eae24d2e19bc5c346e9026479
* parent: 39ce47f219b09c380b81f89fe54ac586c8db6bde
* commit_url: https://github.com/curl/curl/commit/7f4a9a9b2a49547eae24d2e19bc5c346e9026479
* cve: CVE-2021-22901
* license: curl
* function: ossl_connect_step1
* relpath: lib/vtls/openssl.c
*/
static CURLcode ossl_connect_step1(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
CURLcode result = CURLE_OK;
char *ciphers;
SSL_METHOD_QUAL SSL_METHOD *req_method = NULL;
X509_LOOKUP *lookup = NULL;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
ctx_option_t ctx_options = 0;
void *ssl_sessionid = NULL;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
bool sni;
const char * const hostname = SSL_HOST_NAME();
#ifdef ENABLE_IPV6
struct in6_addr addr;
#else
struct in_addr addr;
#endif
#endif
const long int ssl_version = SSL_CONN_CONFIG(version);
#ifdef USE_OPENSSL_SRP
const enum CURL_TLSAUTH ssl_authtype = SSL_SET_OPTION(authtype);
#endif
char * const ssl_cert = SSL_SET_OPTION(primary.clientcert);
const struct curl_blob *ssl_cert_blob = SSL_SET_OPTION(primary.cert_blob);
const struct curl_blob *ca_info_blob = SSL_CONN_CONFIG(ca_info_blob);
const char * const ssl_cert_type = SSL_SET_OPTION(cert_type);
const char * const ssl_cafile =
/* CURLOPT_CAINFO_BLOB overrides CURLOPT_CAINFO */
(ca_info_blob ? NULL : SSL_CONN_CONFIG(CAfile));
const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile);
char error_buffer[256];
struct ssl_backend_data *backend = connssl->backend;
bool imported_native_ca = false;
DEBUGASSERT(ssl_connect_1 == connssl->connecting_state);
/* Make funny stuff to get random input */
result = ossl_seed(data);
if(result)
return result;
SSL_SET_OPTION_LVALUE(certverifyresult) = !X509_V_OK;
/* check to see if we've been told to use an explicit SSL/TLS version */
switch(ssl_version) {
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1:
case CURL_SSLVERSION_TLSv1_0:
case CURL_SSLVERSION_TLSv1_1:
case CURL_SSLVERSION_TLSv1_2:
case CURL_SSLVERSION_TLSv1_3:
/* it will be handled later with the context options */
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L)
req_method = TLS_client_method();
#else
req_method = SSLv23_client_method();
#endif
use_sni(TRUE);
break;
case CURL_SSLVERSION_SSLv2:
failf(data, "No SSLv2 support");
return CURLE_NOT_BUILT_IN;
case CURL_SSLVERSION_SSLv3:
failf(data, "No SSLv3 support");
return CURLE_NOT_BUILT_IN;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
if(backend->ctx)
SSL_CTX_free(backend->ctx);
backend->ctx = SSL_CTX_new(req_method);
if(!backend->ctx) {
failf(data, "SSL: couldn't create a context: %s",
ossl_strerror(ERR_peek_error(), error_buffer, sizeof(error_buffer)));
return CURLE_OUT_OF_MEMORY;
}
#ifdef SSL_MODE_RELEASE_BUFFERS
SSL_CTX_set_mode(backend->ctx, SSL_MODE_RELEASE_BUFFERS);
#endif
#ifdef SSL_CTRL_SET_MSG_CALLBACK
if(data->set.fdebug && data->set.verbose) {
/* the SSL trace callback is only used for verbose logging */
SSL_CTX_set_msg_callback(backend->ctx, ossl_trace);
SSL_CTX_set_msg_callback_arg(backend->ctx, conn);
set_logger(conn, data);
}
#endif
/* OpenSSL contains code to work-around lots of bugs and flaws in various
SSL-implementations. SSL_CTX_set_options() is used to enabled those
work-arounds. The man page for this option states that SSL_OP_ALL enables
all the work-arounds and that "It is usually safe to use SSL_OP_ALL to
enable the bug workaround options if compatibility with somewhat broken
implementations is desired."
The "-no_ticket" option was introduced in Openssl0.9.8j. It's a flag to
disable "rfc4507bis session ticket support". rfc4507bis was later turned
into the proper RFC5077 it seems: https://tools.ietf.org/html/rfc5077
The enabled extension concerns the session management. I wonder how often
libcurl stops a connection and then resumes a TLS session. also, sending
the session data is some overhead. .I suggest that you just use your
proposed patch (which explicitly disables TICKET).
If someone writes an application with libcurl and openssl who wants to
enable the feature, one can do this in the SSL callback.
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option enabling allowed proper
interoperability with web server Netscape Enterprise Server 2.0.1 which
was released back in 1996.
Due to CVE-2010-4180, option SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG has
become ineffective as of OpenSSL 0.9.8q and 1.0.0c. In order to mitigate
CVE-2010-4180 when using previous OpenSSL versions we no longer enable
this option regardless of OpenSSL version and SSL_OP_ALL definition.
OpenSSL added a work-around for a SSL 3.0/TLS 1.0 CBC vulnerability
(https://www.openssl.org/~bodo/tls-cbc.txt). In 0.9.6e they added a bit to
SSL_OP_ALL that _disables_ that work-around despite the fact that
SSL_OP_ALL is documented to do "rather harmless" workarounds. In order to
keep the secure work-around, the SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS bit
must not be set.
*/
ctx_options = SSL_OP_ALL;
#ifdef SSL_OP_NO_TICKET
ctx_options |= SSL_OP_NO_TICKET;
#endif
#ifdef SSL_OP_NO_COMPRESSION
ctx_options |= SSL_OP_NO_COMPRESSION;
#endif
#ifdef SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
/* mitigate CVE-2010-4180 */
ctx_options &= ~SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG;
#endif
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
/* unless the user explicitly ask to allow the protocol vulnerability we
use the work-around */
if(!SSL_SET_OPTION(enable_beast))
ctx_options &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;
#endif
switch(ssl_version) {
case CURL_SSLVERSION_SSLv2:
case CURL_SSLVERSION_SSLv3:
return CURLE_NOT_BUILT_IN;
/* "--tlsv<x.y>" options mean TLS >= version <x.y> */
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_0: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_1: /* TLS >= version 1.1 */
case CURL_SSLVERSION_TLSv1_2: /* TLS >= version 1.2 */
case CURL_SSLVERSION_TLSv1_3: /* TLS >= version 1.3 */
/* asking for any TLS version as the minimum, means no SSL versions
allowed */
ctx_options |= SSL_OP_NO_SSLv2;
ctx_options |= SSL_OP_NO_SSLv3;
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) /* 1.1.0 */
result = set_ssl_version_min_max(backend->ctx, conn);
#else
result = set_ssl_version_min_max_legacy(&ctx_options, data, conn,
sockindex);
#endif
if(result != CURLE_OK)
return result;
break;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
SSL_CTX_set_options(backend->ctx, ctx_options);
#ifdef HAS_NPN
if(conn->bits.tls_enable_npn)
SSL_CTX_set_next_proto_select_cb(backend->ctx, select_next_proto_cb, data);
#endif
#ifdef HAS_ALPN
if(conn->bits.tls_enable_alpn) {
int cur = 0;
unsigned char protocols[128];
#ifdef USE_HTTP2
if(data->state.httpwant >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
protocols[cur++] = ALPN_H2_LENGTH;
memcpy(&protocols[cur], ALPN_H2, ALPN_H2_LENGTH);
cur += ALPN_H2_LENGTH;
infof(data, "ALPN, offering %s\n", ALPN_H2);
}
#endif
protocols[cur++] = ALPN_HTTP_1_1_LENGTH;
memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
cur += ALPN_HTTP_1_1_LENGTH;
infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
/* expects length prefixed preference ordered list of protocols in wire
* format
*/
if(SSL_CTX_set_alpn_protos(backend->ctx, protocols, cur)) {
failf(data, "Error setting ALPN");
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif
if(ssl_cert || ssl_cert_blob || ssl_cert_type) {
if(!result &&
!cert_stuff(data, backend->ctx,
ssl_cert, ssl_cert_blob, ssl_cert_type,
SSL_SET_OPTION(key), SSL_SET_OPTION(key_blob),
SSL_SET_OPTION(key_type), SSL_SET_OPTION(key_passwd)))
result = CURLE_SSL_CERTPROBLEM;
if(result)
/* failf() is already done in cert_stuff() */
return result;
}
ciphers = SSL_CONN_CONFIG(cipher_list);
if(!ciphers)
ciphers = (char *)DEFAULT_CIPHER_SELECTION;
if(ciphers) {
if(!SSL_CTX_set_cipher_list(backend->ctx, ciphers)) {
failf(data, "failed setting cipher list: %s", ciphers);
return CURLE_SSL_CIPHER;
}
infof(data, "Cipher selection: %s\n", ciphers);
}
#ifdef HAVE_SSL_CTX_SET_CIPHERSUITES
{
char *ciphers13 = SSL_CONN_CONFIG(cipher_list13);
if(ciphers13) {
if(!SSL_CTX_set_ciphersuites(backend->ctx, ciphers13)) {
failf(data, "failed setting TLS 1.3 cipher suite: %s", ciphers13);
return CURLE_SSL_CIPHER;
}
infof(data, "TLS 1.3 cipher selection: %s\n", ciphers13);
}
}
#endif
#ifdef HAVE_SSL_CTX_SET_POST_HANDSHAKE_AUTH
/* OpenSSL 1.1.1 requires clients to opt-in for PHA */
SSL_CTX_set_post_handshake_auth(backend->ctx, 1);
#endif
#ifdef HAVE_SSL_CTX_SET_EC_CURVES
{
char *curves = SSL_CONN_CONFIG(curves);
if(curves) {
if(!SSL_CTX_set1_curves_list(backend->ctx, curves)) {
failf(data, "failed setting curves list: '%s'", curves);
return CURLE_SSL_CIPHER;
}
}
}
#endif
#ifdef USE_OPENSSL_SRP
if(ssl_authtype == CURL_TLSAUTH_SRP) {
char * const ssl_username = SSL_SET_OPTION(username);
infof(data, "Using TLS-SRP username: %s\n", ssl_username);
if(!SSL_CTX_set_srp_username(backend->ctx, ssl_username)) {
failf(data, "Unable to set SRP user name");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CTX_set_srp_password(backend->ctx, SSL_SET_OPTION(password))) {
failf(data, "failed setting SRP password");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CONN_CONFIG(cipher_list)) {
infof(data, "Setting cipher list SRP\n");
if(!SSL_CTX_set_cipher_list(backend->ctx, "SRP")) {
failf(data, "failed setting SRP cipher list");
return CURLE_SSL_CIPHER;
}
}
}
#endif
#if defined(USE_WIN32_CRYPTO)
/* Import certificates from the Windows root certificate store if requested.
https://stackoverflow.com/questions/9507184/
https://github.com/d3x0r/SACK/blob/master/src/netlib/ssl_layer.c#L1037
https://tools.ietf.org/html/rfc5280 */
if((SSL_CONN_CONFIG(verifypeer) || SSL_CONN_CONFIG(verifyhost)) &&
(SSL_SET_OPTION(native_ca_store))) {
X509_STORE *store = SSL_CTX_get_cert_store(backend->ctx);
HCERTSTORE hStore = CertOpenSystemStore(0, TEXT("ROOT"));
if(hStore) {
PCCERT_CONTEXT pContext = NULL;
/* The array of enhanced key usage OIDs will vary per certificate and is
declared outside of the loop so that rather than malloc/free each
iteration we can grow it with realloc, when necessary. */
CERT_ENHKEY_USAGE *enhkey_usage = NULL;
DWORD enhkey_usage_size = 0;
/* This loop makes a best effort to import all valid certificates from
the MS root store. If a certificate cannot be imported it is skipped.
'result' is used to store only hard-fail conditions (such as out of
memory) that cause an early break. */
result = CURLE_OK;
for(;;) {
X509 *x509;
FILETIME now;
BYTE key_usage[2];
DWORD req_size;
const unsigned char *encoded_cert;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
char cert_name[256];
#endif
pContext = CertEnumCertificatesInStore(hStore, pContext);
if(!pContext)
break;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
if(!CertGetNameStringA(pContext, CERT_NAME_SIMPLE_DISPLAY_TYPE, 0,
NULL, cert_name, sizeof(cert_name))) {
strcpy(cert_name, "Unknown");
}
infof(data, "SSL: Checking cert \"%s\"\n", cert_name);
#endif
encoded_cert = (const unsigned char *)pContext->pbCertEncoded;
if(!encoded_cert)
continue;
GetSystemTimeAsFileTime(&now);
if(CompareFileTime(&pContext->pCertInfo->NotBefore, &now) > 0 ||
CompareFileTime(&now, &pContext->pCertInfo->NotAfter) > 0)
continue;
/* If key usage exists check for signing attribute */
if(CertGetIntendedKeyUsage(pContext->dwCertEncodingType,
pContext->pCertInfo,
key_usage, sizeof(key_usage))) {
if(!(key_usage[0] & CERT_KEY_CERT_SIGN_KEY_USAGE))
continue;
}
else if(GetLastError())
continue;
/* If enhanced key usage exists check for server auth attribute.
*
* Note "In a Microsoft environment, a certificate might also have EKU
* extended properties that specify valid uses for the certificate."
* The call below checks both, and behavior varies depending on what is
* found. For more details see CertGetEnhancedKeyUsage doc.
*/
if(CertGetEnhancedKeyUsage(pContext, 0, NULL, &req_size)) {
if(req_size && req_size > enhkey_usage_size) {
void *tmp = realloc(enhkey_usage, req_size);
if(!tmp) {
failf(data, "SSL: Out of memory allocating for OID list");
result = CURLE_OUT_OF_MEMORY;
break;
}
enhkey_usage = (CERT_ENHKEY_USAGE *)tmp;
enhkey_usage_size = req_size;
}
if(CertGetEnhancedKeyUsage(pContext, 0, enhkey_usage, &req_size)) {
if(!enhkey_usage->cUsageIdentifier) {
/* "If GetLastError returns CRYPT_E_NOT_FOUND, the certificate is
good for all uses. If it returns zero, the certificate has no
valid uses." */
if((HRESULT)GetLastError() != CRYPT_E_NOT_FOUND)
continue;
}
else {
DWORD i;
bool found = false;
for(i = 0; i < enhkey_usage->cUsageIdentifier; ++i) {
if(!strcmp("1.3.6.1.5.5.7.3.1" /* OID server auth */,
enhkey_usage->rgpszUsageIdentifier[i])) {
found = true;
break;
}
}
if(!found)
continue;
}
}
else
continue;
}
else
continue;
x509 = d2i_X509(NULL, &encoded_cert, pContext->cbCertEncoded);
if(!x509)
continue;
/* Try to import the certificate. This may fail for legitimate reasons
such as duplicate certificate, which is allowed by MS but not
OpenSSL. */
if(X509_STORE_add_cert(store, x509) == 1) {
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
infof(data, "SSL: Imported cert \"%s\"\n", cert_name);
#endif
imported_native_ca = true;
}
X509_free(x509);
}
free(enhkey_usage);
CertFreeCertificateContext(pContext);
CertCloseStore(hStore, 0);
if(result)
return result;
}
if(imported_native_ca)
infof(data, "successfully imported windows ca store\n");
else
infof(data, "error importing windows ca store, continuing anyway\n");
}
#endif
if(ca_info_blob) {
result = load_cacert_from_memory(backend->ctx, ca_info_blob);
if(result) {
if(result == CURLE_OUT_OF_MEMORY ||
(verifypeer && !imported_native_ca)) {
failf(data, "error importing CA certificate blob");
return result;
}
/* Only warning if no certificate verification is required. */
infof(data, "error importing CA certificate blob, continuing anyway\n");
}
}
#if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
/* OpenSSL 3.0.0 has deprecated SSL_CTX_load_verify_locations */
{
if(ssl_cafile) {
if(!SSL_CTX_load_verify_file(backend->ctx, ssl_cafile)) {
if(verifypeer && !imported_native_ca) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate file: %s", ssl_cafile);
return CURLE_SSL_CACERT_BADFILE;
}
/* Continue with a warning if no certificate verif is required. */
infof(data, "error setting certificate file, continuing anyway\n");
}
infof(data, " CAfile: %s\n", ssl_cafile);
}
if(ssl_capath) {
if(!SSL_CTX_load_verify_dir(backend->ctx, ssl_capath)) {
if(verifypeer && !imported_native_ca) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate path: %s", ssl_capath);
return CURLE_SSL_CACERT_BADFILE;
}
/* Continue with a warning if no certificate verif is required. */
infof(data, "error setting certificate path, continuing anyway\n");
}
infof(data, " CApath: %s\n", ssl_capath);
}
}
#else
if(ssl_cafile || ssl_capath) {
/* tell SSL where to find CA certificates that are used to verify
the servers certificate. */
if(!SSL_CTX_load_verify_locations(backend->ctx, ssl_cafile, ssl_capath)) {
if(verifypeer && !imported_native_ca) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate verify locations:"
" CAfile: %s CApath: %s",
ssl_cafile ? ssl_cafile : "none",
ssl_capath ? ssl_capath : "none");
return CURLE_SSL_CACERT_BADFILE;
}
/* Just continue with a warning if no strict certificate verification
is required. */
infof(data, "error setting certificate verify locations,"
" continuing anyway:\n");
}
else {
/* Everything is fine. */
infof(data, "successfully set certificate verify locations:\n");
}
infof(data, " CAfile: %s\n", ssl_cafile ? ssl_cafile : "none");
infof(data, " CApath: %s\n", ssl_capath ? ssl_capath : "none");
}
#endif
#ifdef CURL_CA_FALLBACK
if(verifypeer &&
!ca_info_blob && !ssl_cafile && !ssl_capath && !imported_native_ca) {
/* verifying the peer without any CA certificates won't
work so use openssl's built in default as fallback */
SSL_CTX_set_default_verify_paths(backend->ctx);
}
#endif
if(ssl_crlfile) {
/* tell SSL where to find CRL file that is used to check certificate
* revocation */
lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(backend->ctx),
X509_LOOKUP_file());
if(!lookup ||
(!X509_load_crl_file(lookup, ssl_crlfile, X509_FILETYPE_PEM)) ) {
failf(data, "error loading CRL file: %s", ssl_crlfile);
return CURLE_SSL_CRL_BADFILE;
}
/* Everything is fine. */
infof(data, "successfully load CRL file:\n");
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
infof(data, " CRLfile: %s\n", ssl_crlfile);
}
if(verifypeer) {
/* Try building a chain using issuers in the trusted store first to avoid
problems with server-sent legacy intermediates. Newer versions of
OpenSSL do alternate chain checking by default but we do not know how to
determine that in a reliable manner.
https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest
*/
#if defined(X509_V_FLAG_TRUSTED_FIRST)
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_TRUSTED_FIRST);
#endif
#ifdef X509_V_FLAG_PARTIAL_CHAIN
if(!SSL_SET_OPTION(no_partialchain) && !ssl_crlfile) {
/* Have intermediate certificates in the trust store be treated as
trust-anchors, in the same way as self-signed root CA certificates
are. This allows users to verify servers using the intermediate cert
only, instead of needing the whole chain.
Due to OpenSSL bug https://github.com/openssl/openssl/issues/5081 we
cannot do partial chains with CRL check.
*/
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_PARTIAL_CHAIN);
}
#endif
}
/* SSL always tries to verify the peer, this only says whether it should
* fail to connect if the verification fails, or if it should continue
* anyway. In the latter case the result of the verification is checked with
* SSL_get_verify_result() below. */
SSL_CTX_set_verify(backend->ctx,
verifypeer ? SSL_VERIFY_PEER : SSL_VERIFY_NONE, NULL);
/* Enable logging of secrets to the file specified in env SSLKEYLOGFILE. */
#ifdef HAVE_KEYLOG_CALLBACK
if(Curl_tls_keylog_enabled()) {
SSL_CTX_set_keylog_callback(backend->ctx, ossl_keylog_callback);
}
#endif
/* Enable the session cache because it's a prerequisite for the "new session"
* callback. Use the "external storage" mode to avoid that OpenSSL creates
* an internal session cache.
*/
SSL_CTX_set_session_cache_mode(backend->ctx,
SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL);
SSL_CTX_sess_set_new_cb(backend->ctx, ossl_new_session_cb);
/* give application a chance to interfere with SSL set up. */
if(data->set.ssl.fsslctx) {
Curl_set_in_callback(data, true);
result = (*data->set.ssl.fsslctx)(data, backend->ctx,
data->set.ssl.fsslctxp);
Curl_set_in_callback(data, false);
if(result) {
failf(data, "error signaled by ssl ctx callback");
return result;
}
}
/* Lets make an SSL structure */
if(backend->handle)
SSL_free(backend->handle);
backend->handle = SSL_new(backend->ctx);
if(!backend->handle) {
failf(data, "SSL: couldn't create a context (handle)!");
return CURLE_OUT_OF_MEMORY;
}
#if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
!defined(OPENSSL_NO_OCSP)
if(SSL_CONN_CONFIG(verifystatus))
SSL_set_tlsext_status_type(backend->handle, TLSEXT_STATUSTYPE_ocsp);
#endif
#if defined(OPENSSL_IS_BORINGSSL) && defined(ALLOW_RENEG)
SSL_set_renegotiate_mode(backend->handle, ssl_renegotiate_freely);
#endif
SSL_set_connect_state(backend->handle);
backend->server_cert = 0x0;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
if((0 == Curl_inet_pton(AF_INET, hostname, &addr)) &&
#ifdef ENABLE_IPV6
(0 == Curl_inet_pton(AF_INET6, hostname, &addr)) &&
#endif
sni) {
size_t nlen = strlen(hostname);
if((long)nlen >= data->set.buffer_size)
/* this is seriously messed up */
return CURLE_SSL_CONNECT_ERROR;
/* RFC 6066 section 3 says the SNI field is case insensitive, but browsers
send the data lowercase and subsequently there are now numerous servers
out there that don't work unless the name is lowercased */
Curl_strntolower(data->state.buffer, hostname, nlen);
data->state.buffer[nlen] = 0;
if(!SSL_set_tlsext_host_name(backend->handle, data->state.buffer))
infof(data, "WARNING: failed to configure server name indication (SNI) "
"TLS extension\n");
}
#endif
ossl_associate_connection(data, conn, sockindex);
Curl_ssl_sessionid_lock(data);
if(!Curl_ssl_getsessionid(data, conn, SSL_IS_PROXY() ? TRUE : FALSE,
&ssl_sessionid, NULL, sockindex)) {
/* we got a session id, use it! */
if(!SSL_set_session(backend->handle, ssl_sessionid)) {
Curl_ssl_sessionid_unlock(data);
failf(data, "SSL: SSL_set_session failed: %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
/* Informational message */
infof(data, "SSL re-using session ID\n");
}
Curl_ssl_sessionid_unlock(data);
#ifndef CURL_DISABLE_PROXY
if(conn->proxy_ssl[sockindex].use) {
BIO *const bio = BIO_new(BIO_f_ssl());
SSL *handle = conn->proxy_ssl[sockindex].backend->handle;
DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
DEBUGASSERT(handle != NULL);
DEBUGASSERT(bio != NULL);
BIO_set_ssl(bio, handle, FALSE);
SSL_set_bio(backend->handle, bio, bio);
}
else
#endif
if(!SSL_set_fd(backend->handle, (int)sockfd)) {
/* pass the raw socket into the SSL layers */
failf(data, "SSL: SSL_set_fd failed: %s",
ossl_strerror(ERR_get_error(), error_buffer, sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
connssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2021-22901-ossl_connect_step1/vuln.c
+729
View File
@@ -0,0 +1,729 @@
/* Provenance: curl/curl ossl_connect_step1 (vuln).
* repo: curl/curl
* commit: 39ce47f219b09c380b81f89fe54ac586c8db6bde
* parent: 39ce47f219b09c380b81f89fe54ac586c8db6bde
* commit_url: https://github.com/curl/curl/commit/7f4a9a9b2a49547eae24d2e19bc5c346e9026479
* cve: CVE-2021-22901
* license: curl
* function: ossl_connect_step1
* relpath: lib/vtls/openssl.c
*/
static CURLcode ossl_connect_step1(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
CURLcode result = CURLE_OK;
char *ciphers;
SSL_METHOD_QUAL SSL_METHOD *req_method = NULL;
X509_LOOKUP *lookup = NULL;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
ctx_option_t ctx_options = 0;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
bool sni;
const char * const hostname = SSL_HOST_NAME();
#ifdef ENABLE_IPV6
struct in6_addr addr;
#else
struct in_addr addr;
#endif
#endif
const long int ssl_version = SSL_CONN_CONFIG(version);
#ifdef USE_OPENSSL_SRP
const enum CURL_TLSAUTH ssl_authtype = SSL_SET_OPTION(authtype);
#endif
char * const ssl_cert = SSL_SET_OPTION(primary.clientcert);
const struct curl_blob *ssl_cert_blob = SSL_SET_OPTION(primary.cert_blob);
const struct curl_blob *ca_info_blob = SSL_CONN_CONFIG(ca_info_blob);
const char * const ssl_cert_type = SSL_SET_OPTION(cert_type);
const char * const ssl_cafile =
/* CURLOPT_CAINFO_BLOB overrides CURLOPT_CAINFO */
(ca_info_blob ? NULL : SSL_CONN_CONFIG(CAfile));
const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile);
char error_buffer[256];
struct ssl_backend_data *backend = connssl->backend;
bool imported_native_ca = false;
DEBUGASSERT(ssl_connect_1 == connssl->connecting_state);
/* Make funny stuff to get random input */
result = ossl_seed(data);
if(result)
return result;
SSL_SET_OPTION_LVALUE(certverifyresult) = !X509_V_OK;
/* check to see if we've been told to use an explicit SSL/TLS version */
switch(ssl_version) {
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1:
case CURL_SSLVERSION_TLSv1_0:
case CURL_SSLVERSION_TLSv1_1:
case CURL_SSLVERSION_TLSv1_2:
case CURL_SSLVERSION_TLSv1_3:
/* it will be handled later with the context options */
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L)
req_method = TLS_client_method();
#else
req_method = SSLv23_client_method();
#endif
use_sni(TRUE);
break;
case CURL_SSLVERSION_SSLv2:
failf(data, "No SSLv2 support");
return CURLE_NOT_BUILT_IN;
case CURL_SSLVERSION_SSLv3:
failf(data, "No SSLv3 support");
return CURLE_NOT_BUILT_IN;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
if(backend->ctx)
SSL_CTX_free(backend->ctx);
backend->ctx = SSL_CTX_new(req_method);
if(!backend->ctx) {
failf(data, "SSL: couldn't create a context: %s",
ossl_strerror(ERR_peek_error(), error_buffer, sizeof(error_buffer)));
return CURLE_OUT_OF_MEMORY;
}
#ifdef SSL_MODE_RELEASE_BUFFERS
SSL_CTX_set_mode(backend->ctx, SSL_MODE_RELEASE_BUFFERS);
#endif
#ifdef SSL_CTRL_SET_MSG_CALLBACK
if(data->set.fdebug && data->set.verbose) {
/* the SSL trace callback is only used for verbose logging */
SSL_CTX_set_msg_callback(backend->ctx, ossl_trace);
SSL_CTX_set_msg_callback_arg(backend->ctx, conn);
set_logger(conn, data);
}
#endif
/* OpenSSL contains code to work-around lots of bugs and flaws in various
SSL-implementations. SSL_CTX_set_options() is used to enabled those
work-arounds. The man page for this option states that SSL_OP_ALL enables
all the work-arounds and that "It is usually safe to use SSL_OP_ALL to
enable the bug workaround options if compatibility with somewhat broken
implementations is desired."
The "-no_ticket" option was introduced in Openssl0.9.8j. It's a flag to
disable "rfc4507bis session ticket support". rfc4507bis was later turned
into the proper RFC5077 it seems: https://tools.ietf.org/html/rfc5077
The enabled extension concerns the session management. I wonder how often
libcurl stops a connection and then resumes a TLS session. also, sending
the session data is some overhead. .I suggest that you just use your
proposed patch (which explicitly disables TICKET).
If someone writes an application with libcurl and openssl who wants to
enable the feature, one can do this in the SSL callback.
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option enabling allowed proper
interoperability with web server Netscape Enterprise Server 2.0.1 which
was released back in 1996.
Due to CVE-2010-4180, option SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG has
become ineffective as of OpenSSL 0.9.8q and 1.0.0c. In order to mitigate
CVE-2010-4180 when using previous OpenSSL versions we no longer enable
this option regardless of OpenSSL version and SSL_OP_ALL definition.
OpenSSL added a work-around for a SSL 3.0/TLS 1.0 CBC vulnerability
(https://www.openssl.org/~bodo/tls-cbc.txt). In 0.9.6e they added a bit to
SSL_OP_ALL that _disables_ that work-around despite the fact that
SSL_OP_ALL is documented to do "rather harmless" workarounds. In order to
keep the secure work-around, the SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS bit
must not be set.
*/
ctx_options = SSL_OP_ALL;
#ifdef SSL_OP_NO_TICKET
ctx_options |= SSL_OP_NO_TICKET;
#endif
#ifdef SSL_OP_NO_COMPRESSION
ctx_options |= SSL_OP_NO_COMPRESSION;
#endif
#ifdef SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
/* mitigate CVE-2010-4180 */
ctx_options &= ~SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG;
#endif
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
/* unless the user explicitly ask to allow the protocol vulnerability we
use the work-around */
if(!SSL_SET_OPTION(enable_beast))
ctx_options &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;
#endif
switch(ssl_version) {
case CURL_SSLVERSION_SSLv2:
case CURL_SSLVERSION_SSLv3:
return CURLE_NOT_BUILT_IN;
/* "--tlsv<x.y>" options mean TLS >= version <x.y> */
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_0: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_1: /* TLS >= version 1.1 */
case CURL_SSLVERSION_TLSv1_2: /* TLS >= version 1.2 */
case CURL_SSLVERSION_TLSv1_3: /* TLS >= version 1.3 */
/* asking for any TLS version as the minimum, means no SSL versions
allowed */
ctx_options |= SSL_OP_NO_SSLv2;
ctx_options |= SSL_OP_NO_SSLv3;
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) /* 1.1.0 */
result = set_ssl_version_min_max(backend->ctx, conn);
#else
result = set_ssl_version_min_max_legacy(&ctx_options, data, conn,
sockindex);
#endif
if(result != CURLE_OK)
return result;
break;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
SSL_CTX_set_options(backend->ctx, ctx_options);
#ifdef HAS_NPN
if(conn->bits.tls_enable_npn)
SSL_CTX_set_next_proto_select_cb(backend->ctx, select_next_proto_cb, data);
#endif
#ifdef HAS_ALPN
if(conn->bits.tls_enable_alpn) {
int cur = 0;
unsigned char protocols[128];
#ifdef USE_HTTP2
if(data->state.httpwant >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
protocols[cur++] = ALPN_H2_LENGTH;
memcpy(&protocols[cur], ALPN_H2, ALPN_H2_LENGTH);
cur += ALPN_H2_LENGTH;
infof(data, "ALPN, offering %s\n", ALPN_H2);
}
#endif
protocols[cur++] = ALPN_HTTP_1_1_LENGTH;
memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
cur += ALPN_HTTP_1_1_LENGTH;
infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
/* expects length prefixed preference ordered list of protocols in wire
* format
*/
if(SSL_CTX_set_alpn_protos(backend->ctx, protocols, cur)) {
failf(data, "Error setting ALPN");
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif
if(ssl_cert || ssl_cert_blob || ssl_cert_type) {
if(!result &&
!cert_stuff(data, backend->ctx,
ssl_cert, ssl_cert_blob, ssl_cert_type,
SSL_SET_OPTION(key), SSL_SET_OPTION(key_blob),
SSL_SET_OPTION(key_type), SSL_SET_OPTION(key_passwd)))
result = CURLE_SSL_CERTPROBLEM;
if(result)
/* failf() is already done in cert_stuff() */
return result;
}
ciphers = SSL_CONN_CONFIG(cipher_list);
if(!ciphers)
ciphers = (char *)DEFAULT_CIPHER_SELECTION;
if(ciphers) {
if(!SSL_CTX_set_cipher_list(backend->ctx, ciphers)) {
failf(data, "failed setting cipher list: %s", ciphers);
return CURLE_SSL_CIPHER;
}
infof(data, "Cipher selection: %s\n", ciphers);
}
#ifdef HAVE_SSL_CTX_SET_CIPHERSUITES
{
char *ciphers13 = SSL_CONN_CONFIG(cipher_list13);
if(ciphers13) {
if(!SSL_CTX_set_ciphersuites(backend->ctx, ciphers13)) {
failf(data, "failed setting TLS 1.3 cipher suite: %s", ciphers13);
return CURLE_SSL_CIPHER;
}
infof(data, "TLS 1.3 cipher selection: %s\n", ciphers13);
}
}
#endif
#ifdef HAVE_SSL_CTX_SET_POST_HANDSHAKE_AUTH
/* OpenSSL 1.1.1 requires clients to opt-in for PHA */
SSL_CTX_set_post_handshake_auth(backend->ctx, 1);
#endif
#ifdef HAVE_SSL_CTX_SET_EC_CURVES
{
char *curves = SSL_CONN_CONFIG(curves);
if(curves) {
if(!SSL_CTX_set1_curves_list(backend->ctx, curves)) {
failf(data, "failed setting curves list: '%s'", curves);
return CURLE_SSL_CIPHER;
}
}
}
#endif
#ifdef USE_OPENSSL_SRP
if(ssl_authtype == CURL_TLSAUTH_SRP) {
char * const ssl_username = SSL_SET_OPTION(username);
infof(data, "Using TLS-SRP username: %s\n", ssl_username);
if(!SSL_CTX_set_srp_username(backend->ctx, ssl_username)) {
failf(data, "Unable to set SRP user name");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CTX_set_srp_password(backend->ctx, SSL_SET_OPTION(password))) {
failf(data, "failed setting SRP password");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CONN_CONFIG(cipher_list)) {
infof(data, "Setting cipher list SRP\n");
if(!SSL_CTX_set_cipher_list(backend->ctx, "SRP")) {
failf(data, "failed setting SRP cipher list");
return CURLE_SSL_CIPHER;
}
}
}
#endif
#if defined(USE_WIN32_CRYPTO)
/* Import certificates from the Windows root certificate store if requested.
https://stackoverflow.com/questions/9507184/
https://github.com/d3x0r/SACK/blob/master/src/netlib/ssl_layer.c#L1037
https://tools.ietf.org/html/rfc5280 */
if((SSL_CONN_CONFIG(verifypeer) || SSL_CONN_CONFIG(verifyhost)) &&
(SSL_SET_OPTION(native_ca_store))) {
X509_STORE *store = SSL_CTX_get_cert_store(backend->ctx);
HCERTSTORE hStore = CertOpenSystemStore(0, TEXT("ROOT"));
if(hStore) {
PCCERT_CONTEXT pContext = NULL;
/* The array of enhanced key usage OIDs will vary per certificate and is
declared outside of the loop so that rather than malloc/free each
iteration we can grow it with realloc, when necessary. */
CERT_ENHKEY_USAGE *enhkey_usage = NULL;
DWORD enhkey_usage_size = 0;
/* This loop makes a best effort to import all valid certificates from
the MS root store. If a certificate cannot be imported it is skipped.
'result' is used to store only hard-fail conditions (such as out of
memory) that cause an early break. */
result = CURLE_OK;
for(;;) {
X509 *x509;
FILETIME now;
BYTE key_usage[2];
DWORD req_size;
const unsigned char *encoded_cert;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
char cert_name[256];
#endif
pContext = CertEnumCertificatesInStore(hStore, pContext);
if(!pContext)
break;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
if(!CertGetNameStringA(pContext, CERT_NAME_SIMPLE_DISPLAY_TYPE, 0,
NULL, cert_name, sizeof(cert_name))) {
strcpy(cert_name, "Unknown");
}
infof(data, "SSL: Checking cert \"%s\"\n", cert_name);
#endif
encoded_cert = (const unsigned char *)pContext->pbCertEncoded;
if(!encoded_cert)
continue;
GetSystemTimeAsFileTime(&now);
if(CompareFileTime(&pContext->pCertInfo->NotBefore, &now) > 0 ||
CompareFileTime(&now, &pContext->pCertInfo->NotAfter) > 0)
continue;
/* If key usage exists check for signing attribute */
if(CertGetIntendedKeyUsage(pContext->dwCertEncodingType,
pContext->pCertInfo,
key_usage, sizeof(key_usage))) {
if(!(key_usage[0] & CERT_KEY_CERT_SIGN_KEY_USAGE))
continue;
}
else if(GetLastError())
continue;
/* If enhanced key usage exists check for server auth attribute.
*
* Note "In a Microsoft environment, a certificate might also have EKU
* extended properties that specify valid uses for the certificate."
* The call below checks both, and behavior varies depending on what is
* found. For more details see CertGetEnhancedKeyUsage doc.
*/
if(CertGetEnhancedKeyUsage(pContext, 0, NULL, &req_size)) {
if(req_size && req_size > enhkey_usage_size) {
void *tmp = realloc(enhkey_usage, req_size);
if(!tmp) {
failf(data, "SSL: Out of memory allocating for OID list");
result = CURLE_OUT_OF_MEMORY;
break;
}
enhkey_usage = (CERT_ENHKEY_USAGE *)tmp;
enhkey_usage_size = req_size;
}
if(CertGetEnhancedKeyUsage(pContext, 0, enhkey_usage, &req_size)) {
if(!enhkey_usage->cUsageIdentifier) {
/* "If GetLastError returns CRYPT_E_NOT_FOUND, the certificate is
good for all uses. If it returns zero, the certificate has no
valid uses." */
if((HRESULT)GetLastError() != CRYPT_E_NOT_FOUND)
continue;
}
else {
DWORD i;
bool found = false;
for(i = 0; i < enhkey_usage->cUsageIdentifier; ++i) {
if(!strcmp("1.3.6.1.5.5.7.3.1" /* OID server auth */,
enhkey_usage->rgpszUsageIdentifier[i])) {
found = true;
break;
}
}
if(!found)
continue;
}
}
else
continue;
}
else
continue;
x509 = d2i_X509(NULL, &encoded_cert, pContext->cbCertEncoded);
if(!x509)
continue;
/* Try to import the certificate. This may fail for legitimate reasons
such as duplicate certificate, which is allowed by MS but not
OpenSSL. */
if(X509_STORE_add_cert(store, x509) == 1) {
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
infof(data, "SSL: Imported cert \"%s\"\n", cert_name);
#endif
imported_native_ca = true;
}
X509_free(x509);
}
free(enhkey_usage);
CertFreeCertificateContext(pContext);
CertCloseStore(hStore, 0);
if(result)
return result;
}
if(imported_native_ca)
infof(data, "successfully imported windows ca store\n");
else
infof(data, "error importing windows ca store, continuing anyway\n");
}
#endif
if(ca_info_blob) {
result = load_cacert_from_memory(backend->ctx, ca_info_blob);
if(result) {
if(result == CURLE_OUT_OF_MEMORY ||
(verifypeer && !imported_native_ca)) {
failf(data, "error importing CA certificate blob");
return result;
}
/* Only warning if no certificate verification is required. */
infof(data, "error importing CA certificate blob, continuing anyway\n");
}
}
#if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
/* OpenSSL 3.0.0 has deprecated SSL_CTX_load_verify_locations */
{
if(ssl_cafile) {
if(!SSL_CTX_load_verify_file(backend->ctx, ssl_cafile)) {
if(verifypeer && !imported_native_ca) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate file: %s", ssl_cafile);
return CURLE_SSL_CACERT_BADFILE;
}
/* Continue with a warning if no certificate verif is required. */
infof(data, "error setting certificate file, continuing anyway\n");
}
infof(data, " CAfile: %s\n", ssl_cafile);
}
if(ssl_capath) {
if(!SSL_CTX_load_verify_dir(backend->ctx, ssl_capath)) {
if(verifypeer && !imported_native_ca) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate path: %s", ssl_capath);
return CURLE_SSL_CACERT_BADFILE;
}
/* Continue with a warning if no certificate verif is required. */
infof(data, "error setting certificate path, continuing anyway\n");
}
infof(data, " CApath: %s\n", ssl_capath);
}
}
#else
if(ssl_cafile || ssl_capath) {
/* tell SSL where to find CA certificates that are used to verify
the servers certificate. */
if(!SSL_CTX_load_verify_locations(backend->ctx, ssl_cafile, ssl_capath)) {
if(verifypeer && !imported_native_ca) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate verify locations:"
" CAfile: %s CApath: %s",
ssl_cafile ? ssl_cafile : "none",
ssl_capath ? ssl_capath : "none");
return CURLE_SSL_CACERT_BADFILE;
}
/* Just continue with a warning if no strict certificate verification
is required. */
infof(data, "error setting certificate verify locations,"
" continuing anyway:\n");
}
else {
/* Everything is fine. */
infof(data, "successfully set certificate verify locations:\n");
}
infof(data, " CAfile: %s\n", ssl_cafile ? ssl_cafile : "none");
infof(data, " CApath: %s\n", ssl_capath ? ssl_capath : "none");
}
#endif
#ifdef CURL_CA_FALLBACK
if(verifypeer &&
!ca_info_blob && !ssl_cafile && !ssl_capath && !imported_native_ca) {
/* verifying the peer without any CA certificates won't
work so use openssl's built in default as fallback */
SSL_CTX_set_default_verify_paths(backend->ctx);
}
#endif
if(ssl_crlfile) {
/* tell SSL where to find CRL file that is used to check certificate
* revocation */
lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(backend->ctx),
X509_LOOKUP_file());
if(!lookup ||
(!X509_load_crl_file(lookup, ssl_crlfile, X509_FILETYPE_PEM)) ) {
failf(data, "error loading CRL file: %s", ssl_crlfile);
return CURLE_SSL_CRL_BADFILE;
}
/* Everything is fine. */
infof(data, "successfully load CRL file:\n");
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
infof(data, " CRLfile: %s\n", ssl_crlfile);
}
if(verifypeer) {
/* Try building a chain using issuers in the trusted store first to avoid
problems with server-sent legacy intermediates. Newer versions of
OpenSSL do alternate chain checking by default but we do not know how to
determine that in a reliable manner.
https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest
*/
#if defined(X509_V_FLAG_TRUSTED_FIRST)
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_TRUSTED_FIRST);
#endif
#ifdef X509_V_FLAG_PARTIAL_CHAIN
if(!SSL_SET_OPTION(no_partialchain) && !ssl_crlfile) {
/* Have intermediate certificates in the trust store be treated as
trust-anchors, in the same way as self-signed root CA certificates
are. This allows users to verify servers using the intermediate cert
only, instead of needing the whole chain.
Due to OpenSSL bug https://github.com/openssl/openssl/issues/5081 we
cannot do partial chains with CRL check.
*/
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_PARTIAL_CHAIN);
}
#endif
}
/* SSL always tries to verify the peer, this only says whether it should
* fail to connect if the verification fails, or if it should continue
* anyway. In the latter case the result of the verification is checked with
* SSL_get_verify_result() below. */
SSL_CTX_set_verify(backend->ctx,
verifypeer ? SSL_VERIFY_PEER : SSL_VERIFY_NONE, NULL);
/* Enable logging of secrets to the file specified in env SSLKEYLOGFILE. */
#ifdef HAVE_KEYLOG_CALLBACK
if(Curl_tls_keylog_enabled()) {
SSL_CTX_set_keylog_callback(backend->ctx, ossl_keylog_callback);
}
#endif
/* Enable the session cache because it's a prerequisite for the "new session"
* callback. Use the "external storage" mode to avoid that OpenSSL creates
* an internal session cache.
*/
SSL_CTX_set_session_cache_mode(backend->ctx,
SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL);
SSL_CTX_sess_set_new_cb(backend->ctx, ossl_new_session_cb);
/* give application a chance to interfere with SSL set up. */
if(data->set.ssl.fsslctx) {
Curl_set_in_callback(data, true);
result = (*data->set.ssl.fsslctx)(data, backend->ctx,
data->set.ssl.fsslctxp);
Curl_set_in_callback(data, false);
if(result) {
failf(data, "error signaled by ssl ctx callback");
return result;
}
}
/* Lets make an SSL structure */
if(backend->handle)
SSL_free(backend->handle);
backend->handle = SSL_new(backend->ctx);
if(!backend->handle) {
failf(data, "SSL: couldn't create a context (handle)!");
return CURLE_OUT_OF_MEMORY;
}
#if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
!defined(OPENSSL_NO_OCSP)
if(SSL_CONN_CONFIG(verifystatus))
SSL_set_tlsext_status_type(backend->handle, TLSEXT_STATUSTYPE_ocsp);
#endif
#if defined(OPENSSL_IS_BORINGSSL) && defined(ALLOW_RENEG)
SSL_set_renegotiate_mode(backend->handle, ssl_renegotiate_freely);
#endif
SSL_set_connect_state(backend->handle);
backend->server_cert = 0x0;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
if((0 == Curl_inet_pton(AF_INET, hostname, &addr)) &&
#ifdef ENABLE_IPV6
(0 == Curl_inet_pton(AF_INET6, hostname, &addr)) &&
#endif
sni) {
size_t nlen = strlen(hostname);
if((long)nlen >= data->set.buffer_size)
/* this is seriously messed up */
return CURLE_SSL_CONNECT_ERROR;
/* RFC 6066 section 3 says the SNI field is case insensitive, but browsers
send the data lowercase and subsequently there are now numerous servers
out there that don't work unless the name is lowercased */
Curl_strntolower(data->state.buffer, hostname, nlen);
data->state.buffer[nlen] = 0;
if(!SSL_set_tlsext_host_name(backend->handle, data->state.buffer))
infof(data, "WARNING: failed to configure server name indication (SNI) "
"TLS extension\n");
}
#endif
/* Check if there's a cached ID we can/should use here! */
if(SSL_SET_OPTION(primary.sessionid)) {
void *ssl_sessionid = NULL;
int data_idx = ossl_get_ssl_data_index();
int connectdata_idx = ossl_get_ssl_conn_index();
int sockindex_idx = ossl_get_ssl_sockindex_index();
int proxy_idx = ossl_get_proxy_index();
if(data_idx >= 0 && connectdata_idx >= 0 && sockindex_idx >= 0 &&
proxy_idx >= 0) {
/* Store the data needed for the "new session" callback.
* The sockindex is stored as a pointer to an array element. */
SSL_set_ex_data(backend->handle, data_idx, data);
SSL_set_ex_data(backend->handle, connectdata_idx, conn);
SSL_set_ex_data(backend->handle, sockindex_idx, conn->sock + sockindex);
#ifndef CURL_DISABLE_PROXY
SSL_set_ex_data(backend->handle, proxy_idx, SSL_IS_PROXY() ? (void *) 1:
NULL);
#else
SSL_set_ex_data(backend->handle, proxy_idx, NULL);
#endif
}
Curl_ssl_sessionid_lock(data);
if(!Curl_ssl_getsessionid(data, conn, SSL_IS_PROXY() ? TRUE : FALSE,
&ssl_sessionid, NULL, sockindex)) {
/* we got a session id, use it! */
if(!SSL_set_session(backend->handle, ssl_sessionid)) {
Curl_ssl_sessionid_unlock(data);
failf(data, "SSL: SSL_set_session failed: %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
/* Informational message */
infof(data, "SSL re-using session ID\n");
}
Curl_ssl_sessionid_unlock(data);
}
#ifndef CURL_DISABLE_PROXY
if(conn->proxy_ssl[sockindex].use) {
BIO *const bio = BIO_new(BIO_f_ssl());
SSL *handle = conn->proxy_ssl[sockindex].backend->handle;
DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
DEBUGASSERT(handle != NULL);
DEBUGASSERT(bio != NULL);
BIO_set_ssl(bio, handle, FALSE);
SSL_set_bio(backend->handle, bio, bio);
}
else
#endif
if(!SSL_set_fd(backend->handle, (int)sockfd)) {
/* pass the raw socket into the SSL layers */
failf(data, "SSL: SSL_set_fd failed: %s",
ossl_strerror(ERR_get_error(), error_buffer, sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
connssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2021-22924-nss_do_connect/fixed.c
+73
View File
@@ -0,0 +1,73 @@
/* Provenance: curl/curl nss_do_connect (fixed).
* repo: curl/curl
* commit: 5ea3145850ebff1dc2b13d17440300a01ca38161
* parent: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* commit_url: https://github.com/curl/curl/commit/5ea3145850ebff1dc2b13d17440300a01ca38161
* cve: CVE-2021-22924
* license: curl
* function: nss_do_connect
* relpath: lib/vtls/nss.c
*/
static CURLcode nss_do_connect(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
CURLcode result = CURLE_SSL_CONNECT_ERROR;
PRUint32 timeout;
/* check timeout situation */
const timediff_t time_left = Curl_timeleft(data, NULL, TRUE);
if(time_left < 0) {
failf(data, "timed out before SSL handshake");
result = CURLE_OPERATION_TIMEDOUT;
goto error;
}
/* Force the handshake now */
timeout = PR_MillisecondsToInterval((PRUint32) time_left);
if(SSL_ForceHandshakeWithTimeout(backend->handle, timeout) != SECSuccess) {
if(PR_GetError() == PR_WOULD_BLOCK_ERROR)
/* blocking direction is updated by nss_update_connecting_state() */
return CURLE_AGAIN;
else if(SSL_SET_OPTION(certverifyresult) == SSL_ERROR_BAD_CERT_DOMAIN)
result = CURLE_PEER_FAILED_VERIFICATION;
else if(SSL_SET_OPTION(certverifyresult) != 0)
result = CURLE_PEER_FAILED_VERIFICATION;
goto error;
}
result = display_conn_info(data, backend->handle);
if(result)
goto error;
if(SSL_CONN_CONFIG(issuercert)) {
SECStatus ret = SECFailure;
char *nickname = dup_nickname(data, SSL_CONN_CONFIG(issuercert));
if(nickname) {
/* we support only nicknames in case of issuercert for now */
ret = check_issuer_cert(backend->handle, nickname);
free(nickname);
}
if(SECFailure == ret) {
infof(data, "SSL certificate issuer check failed");
result = CURLE_SSL_ISSUER_ERROR;
goto error;
}
else {
infof(data, "SSL certificate issuer check ok");
}
}
result = cmp_peer_pubkey(connssl, SSL_PINNED_PUB_KEY());
if(result)
/* status already printed */
goto error;
return CURLE_OK;
error:
return nss_fail_connect(connssl, data, result);
}
benchmarks/pairs/vfc/curl-cve-2021-22924-nss_do_connect/vuln.c
+73
View File
@@ -0,0 +1,73 @@
/* Provenance: curl/curl nss_do_connect (vuln).
* repo: curl/curl
* commit: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* parent: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* commit_url: https://github.com/curl/curl/commit/5ea3145850ebff1dc2b13d17440300a01ca38161
* cve: CVE-2021-22924
* license: curl
* function: nss_do_connect
* relpath: lib/vtls/nss.c
*/
static CURLcode nss_do_connect(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
CURLcode result = CURLE_SSL_CONNECT_ERROR;
PRUint32 timeout;
/* check timeout situation */
const timediff_t time_left = Curl_timeleft(data, NULL, TRUE);
if(time_left < 0) {
failf(data, "timed out before SSL handshake");
result = CURLE_OPERATION_TIMEDOUT;
goto error;
}
/* Force the handshake now */
timeout = PR_MillisecondsToInterval((PRUint32) time_left);
if(SSL_ForceHandshakeWithTimeout(backend->handle, timeout) != SECSuccess) {
if(PR_GetError() == PR_WOULD_BLOCK_ERROR)
/* blocking direction is updated by nss_update_connecting_state() */
return CURLE_AGAIN;
else if(SSL_SET_OPTION(certverifyresult) == SSL_ERROR_BAD_CERT_DOMAIN)
result = CURLE_PEER_FAILED_VERIFICATION;
else if(SSL_SET_OPTION(certverifyresult) != 0)
result = CURLE_PEER_FAILED_VERIFICATION;
goto error;
}
result = display_conn_info(data, backend->handle);
if(result)
goto error;
if(SSL_SET_OPTION(issuercert)) {
SECStatus ret = SECFailure;
char *nickname = dup_nickname(data, SSL_SET_OPTION(issuercert));
if(nickname) {
/* we support only nicknames in case of issuercert for now */
ret = check_issuer_cert(backend->handle, nickname);
free(nickname);
}
if(SECFailure == ret) {
infof(data, "SSL certificate issuer check failed");
result = CURLE_SSL_ISSUER_ERROR;
goto error;
}
else {
infof(data, "SSL certificate issuer check ok");
}
}
result = cmp_peer_pubkey(connssl, SSL_PINNED_PUB_KEY());
if(result)
/* status already printed */
goto error;
return CURLE_OK;
error:
return nss_fail_connect(connssl, data, result);
}
benchmarks/pairs/vfc/curl-cve-2021-22924-servercert/fixed.c
+193
View File
@@ -0,0 +1,193 @@
/* Provenance: curl/curl servercert (fixed).
* repo: curl/curl
* commit: 5ea3145850ebff1dc2b13d17440300a01ca38161
* parent: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* commit_url: https://github.com/curl/curl/commit/5ea3145850ebff1dc2b13d17440300a01ca38161
* cve: CVE-2021-22924
* license: curl
* function: servercert
* relpath: lib/vtls/openssl.c
*/
static CURLcode servercert(struct Curl_easy *data,
struct connectdata *conn,
struct ssl_connect_data *connssl,
bool strict)
{
CURLcode result = CURLE_OK;
int rc;
long lerr;
X509 *issuer;
BIO *fp = NULL;
char error_buffer[256]="";
char buffer[2048];
const char *ptr;
BIO *mem = BIO_new(BIO_s_mem());
struct ssl_backend_data *backend = connssl->backend;
if(data->set.ssl.certinfo)
/* we've been asked to gather certificate info! */
(void)get_cert_chain(data, connssl);
backend->server_cert = SSL_get_peer_certificate(backend->handle);
if(!backend->server_cert) {
BIO_free(mem);
if(!strict)
return CURLE_OK;
failf(data, "SSL: couldn't get peer certificate!");
return CURLE_PEER_FAILED_VERIFICATION;
}
infof(data, "%s certificate:", SSL_IS_PROXY() ? "Proxy" : "Server");
rc = x509_name_oneline(X509_get_subject_name(backend->server_cert),
buffer, sizeof(buffer));
infof(data, " subject: %s", rc?"[NONE]":buffer);
#ifndef CURL_DISABLE_VERBOSE_STRINGS
{
long len;
ASN1_TIME_print(mem, X509_get0_notBefore(backend->server_cert));
len = BIO_get_mem_data(mem, (char **) &ptr);
infof(data, " start date: %.*s", (int)len, ptr);
(void)BIO_reset(mem);
ASN1_TIME_print(mem, X509_get0_notAfter(backend->server_cert));
len = BIO_get_mem_data(mem, (char **) &ptr);
infof(data, " expire date: %.*s", (int)len, ptr);
(void)BIO_reset(mem);
}
#endif
BIO_free(mem);
if(SSL_CONN_CONFIG(verifyhost)) {
result = verifyhost(data, conn, backend->server_cert);
if(result) {
X509_free(backend->server_cert);
backend->server_cert = NULL;
return result;
}
}
rc = x509_name_oneline(X509_get_issuer_name(backend->server_cert),
buffer, sizeof(buffer));
if(rc) {
if(strict)
failf(data, "SSL: couldn't get X509-issuer name!");
result = CURLE_PEER_FAILED_VERIFICATION;
}
else {
infof(data, " issuer: %s", buffer);
/* We could do all sorts of certificate verification stuff here before
deallocating the certificate. */
/* e.g. match issuer name with provided issuer certificate */
if(SSL_CONN_CONFIG(issuercert) || SSL_CONN_CONFIG(issuercert_blob)) {
if(SSL_CONN_CONFIG(issuercert_blob))
fp = BIO_new_mem_buf(SSL_CONN_CONFIG(issuercert_blob)->data,
(int)SSL_CONN_CONFIG(issuercert_blob)->len);
else {
fp = BIO_new(BIO_s_file());
if(!fp) {
failf(data,
"BIO_new return NULL, " OSSL_PACKAGE
" error %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)) );
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_OUT_OF_MEMORY;
}
if(BIO_read_filename(fp, SSL_CONN_CONFIG(issuercert)) <= 0) {
if(strict)
failf(data, "SSL: Unable to open issuer cert (%s)",
SSL_CONN_CONFIG(issuercert));
BIO_free(fp);
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_SSL_ISSUER_ERROR;
}
}
issuer = PEM_read_bio_X509(fp, NULL, ZERO_NULL, NULL);
if(!issuer) {
if(strict)
failf(data, "SSL: Unable to read issuer cert (%s)",
SSL_CONN_CONFIG(issuercert));
BIO_free(fp);
X509_free(issuer);
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_SSL_ISSUER_ERROR;
}
if(X509_check_issued(issuer, backend->server_cert) != X509_V_OK) {
if(strict)
failf(data, "SSL: Certificate issuer check failed (%s)",
SSL_CONN_CONFIG(issuercert));
BIO_free(fp);
X509_free(issuer);
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_SSL_ISSUER_ERROR;
}
infof(data, " SSL certificate issuer check ok (%s)",
SSL_CONN_CONFIG(issuercert));
BIO_free(fp);
X509_free(issuer);
}
lerr = SSL_get_verify_result(backend->handle);
SSL_SET_OPTION_LVALUE(certverifyresult) = lerr;
if(lerr != X509_V_OK) {
if(SSL_CONN_CONFIG(verifypeer)) {
/* We probably never reach this, because SSL_connect() will fail
and we return earlier if verifypeer is set? */
if(strict)
failf(data, "SSL certificate verify result: %s (%ld)",
X509_verify_cert_error_string(lerr), lerr);
result = CURLE_PEER_FAILED_VERIFICATION;
}
else
infof(data, " SSL certificate verify result: %s (%ld),"
" continuing anyway.",
X509_verify_cert_error_string(lerr), lerr);
}
else
infof(data, " SSL certificate verify ok.");
}
#if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
!defined(OPENSSL_NO_OCSP)
if(SSL_CONN_CONFIG(verifystatus)) {
result = verifystatus(data, connssl);
if(result) {
X509_free(backend->server_cert);
backend->server_cert = NULL;
return result;
}
}
#endif
if(!strict)
/* when not strict, we don't bother about the verify cert problems */
result = CURLE_OK;
ptr = SSL_PINNED_PUB_KEY();
if(!result && ptr) {
result = pkp_pin_peer_pubkey(data, backend->server_cert, ptr);
if(result)
failf(data, "SSL: public key does not match pinned public key!");
}
X509_free(backend->server_cert);
backend->server_cert = NULL;
connssl->connecting_state = ssl_connect_done;
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22924-servercert/vuln.c
+193
View File
@@ -0,0 +1,193 @@
/* Provenance: curl/curl servercert (vuln).
* repo: curl/curl
* commit: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* parent: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* commit_url: https://github.com/curl/curl/commit/5ea3145850ebff1dc2b13d17440300a01ca38161
* cve: CVE-2021-22924
* license: curl
* function: servercert
* relpath: lib/vtls/openssl.c
*/
static CURLcode servercert(struct Curl_easy *data,
struct connectdata *conn,
struct ssl_connect_data *connssl,
bool strict)
{
CURLcode result = CURLE_OK;
int rc;
long lerr;
X509 *issuer;
BIO *fp = NULL;
char error_buffer[256]="";
char buffer[2048];
const char *ptr;
BIO *mem = BIO_new(BIO_s_mem());
struct ssl_backend_data *backend = connssl->backend;
if(data->set.ssl.certinfo)
/* we've been asked to gather certificate info! */
(void)get_cert_chain(data, connssl);
backend->server_cert = SSL_get_peer_certificate(backend->handle);
if(!backend->server_cert) {
BIO_free(mem);
if(!strict)
return CURLE_OK;
failf(data, "SSL: couldn't get peer certificate!");
return CURLE_PEER_FAILED_VERIFICATION;
}
infof(data, "%s certificate:", SSL_IS_PROXY() ? "Proxy" : "Server");
rc = x509_name_oneline(X509_get_subject_name(backend->server_cert),
buffer, sizeof(buffer));
infof(data, " subject: %s", rc?"[NONE]":buffer);
#ifndef CURL_DISABLE_VERBOSE_STRINGS
{
long len;
ASN1_TIME_print(mem, X509_get0_notBefore(backend->server_cert));
len = BIO_get_mem_data(mem, (char **) &ptr);
infof(data, " start date: %.*s", (int)len, ptr);
(void)BIO_reset(mem);
ASN1_TIME_print(mem, X509_get0_notAfter(backend->server_cert));
len = BIO_get_mem_data(mem, (char **) &ptr);
infof(data, " expire date: %.*s", (int)len, ptr);
(void)BIO_reset(mem);
}
#endif
BIO_free(mem);
if(SSL_CONN_CONFIG(verifyhost)) {
result = verifyhost(data, conn, backend->server_cert);
if(result) {
X509_free(backend->server_cert);
backend->server_cert = NULL;
return result;
}
}
rc = x509_name_oneline(X509_get_issuer_name(backend->server_cert),
buffer, sizeof(buffer));
if(rc) {
if(strict)
failf(data, "SSL: couldn't get X509-issuer name!");
result = CURLE_PEER_FAILED_VERIFICATION;
}
else {
infof(data, " issuer: %s", buffer);
/* We could do all sorts of certificate verification stuff here before
deallocating the certificate. */
/* e.g. match issuer name with provided issuer certificate */
if(SSL_SET_OPTION(issuercert) || SSL_SET_OPTION(issuercert_blob)) {
if(SSL_SET_OPTION(issuercert_blob))
fp = BIO_new_mem_buf(SSL_SET_OPTION(issuercert_blob)->data,
(int)SSL_SET_OPTION(issuercert_blob)->len);
else {
fp = BIO_new(BIO_s_file());
if(!fp) {
failf(data,
"BIO_new return NULL, " OSSL_PACKAGE
" error %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)) );
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_OUT_OF_MEMORY;
}
if(BIO_read_filename(fp, SSL_SET_OPTION(issuercert)) <= 0) {
if(strict)
failf(data, "SSL: Unable to open issuer cert (%s)",
SSL_SET_OPTION(issuercert));
BIO_free(fp);
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_SSL_ISSUER_ERROR;
}
}
issuer = PEM_read_bio_X509(fp, NULL, ZERO_NULL, NULL);
if(!issuer) {
if(strict)
failf(data, "SSL: Unable to read issuer cert (%s)",
SSL_SET_OPTION(issuercert));
BIO_free(fp);
X509_free(issuer);
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_SSL_ISSUER_ERROR;
}
if(X509_check_issued(issuer, backend->server_cert) != X509_V_OK) {
if(strict)
failf(data, "SSL: Certificate issuer check failed (%s)",
SSL_SET_OPTION(issuercert));
BIO_free(fp);
X509_free(issuer);
X509_free(backend->server_cert);
backend->server_cert = NULL;
return CURLE_SSL_ISSUER_ERROR;
}
infof(data, " SSL certificate issuer check ok (%s)",
SSL_SET_OPTION(issuercert));
BIO_free(fp);
X509_free(issuer);
}
lerr = SSL_get_verify_result(backend->handle);
SSL_SET_OPTION_LVALUE(certverifyresult) = lerr;
if(lerr != X509_V_OK) {
if(SSL_CONN_CONFIG(verifypeer)) {
/* We probably never reach this, because SSL_connect() will fail
and we return earlier if verifypeer is set? */
if(strict)
failf(data, "SSL certificate verify result: %s (%ld)",
X509_verify_cert_error_string(lerr), lerr);
result = CURLE_PEER_FAILED_VERIFICATION;
}
else
infof(data, " SSL certificate verify result: %s (%ld),"
" continuing anyway.",
X509_verify_cert_error_string(lerr), lerr);
}
else
infof(data, " SSL certificate verify ok.");
}
#if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
!defined(OPENSSL_NO_OCSP)
if(SSL_CONN_CONFIG(verifystatus)) {
result = verifystatus(data, connssl);
if(result) {
X509_free(backend->server_cert);
backend->server_cert = NULL;
return result;
}
}
#endif
if(!strict)
/* when not strict, we don't bother about the verify cert problems */
result = CURLE_OK;
ptr = SSL_PINNED_PUB_KEY();
if(!result && ptr) {
result = pkp_pin_peer_pubkey(data, backend->server_cert, ptr);
if(result)
failf(data, "SSL: public key does not match pinned public key!");
}
X509_free(backend->server_cert);
backend->server_cert = NULL;
connssl->connecting_state = ssl_connect_done;
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22924/fixed.c
+504
View File
@@ -0,0 +1,504 @@
/* Provenance: curl/curl create_conn (fixed).
* repo: curl/curl
* commit: 5ea3145850ebff1dc2b13d17440300a01ca38161
* parent: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* commit_url: https://github.com/curl/curl/commit/5ea3145850ebff1dc2b13d17440300a01ca38161
* cve: CVE-2021-22924
* license: curl
* function: create_conn
* relpath: lib/url.c
*/
* create_conn() sets up a new connectdata struct, or re-uses an already
* existing one, and resolves host name.
*
* if this function returns CURLE_OK and *async is set to TRUE, the resolve
* response will be coming asynchronously. If *async is FALSE, the name is
* already resolved.
*
* @param data The sessionhandle pointer
* @param in_connect is set to the next connection data pointer
* @param async is set TRUE when an async DNS resolution is pending
* @see Curl_setup_conn()
*
*/
static CURLcode create_conn(struct Curl_easy *data,
struct connectdata **in_connect,
bool *async)
{
CURLcode result = CURLE_OK;
struct connectdata *conn;
struct connectdata *conn_temp = NULL;
bool reuse;
bool connections_available = TRUE;
bool force_reuse = FALSE;
bool waitpipe = FALSE;
size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
*async = FALSE;
*in_connect = NULL;
/*************************************************************
* Check input data
*************************************************************/
if(!data->state.url) {
result = CURLE_URL_MALFORMAT;
goto out;
}
/* First, split up the current URL in parts so that we can use the
parts for checking against the already present connections. In order
to not have to modify everything at once, we allocate a temporary
connection data struct and fill in for comparison purposes. */
conn = allocate_conn(data);
if(!conn) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
/* We must set the return variable as soon as possible, so that our
parent can cleanup any possible allocs we may have done before
any failure */
*in_connect = conn;
result = parseurlandfillconn(data, conn);
if(result)
goto out;
if(data->set.str[STRING_SASL_AUTHZID]) {
conn->sasl_authzid = strdup(data->set.str[STRING_SASL_AUTHZID]);
if(!conn->sasl_authzid) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
}
#ifdef USE_UNIX_SOCKETS
if(data->set.str[STRING_UNIX_SOCKET_PATH]) {
conn->unix_domain_socket = strdup(data->set.str[STRING_UNIX_SOCKET_PATH]);
if(!conn->unix_domain_socket) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
conn->bits.abstract_unix_socket = data->set.abstract_unix_socket;
}
#endif
/* After the unix socket init but before the proxy vars are used, parse and
initialize the proxy vars */
#ifndef CURL_DISABLE_PROXY
result = create_conn_helper_init_proxy(data, conn);
if(result)
goto out;
/*************************************************************
* If the protocol is using SSL and HTTP proxy is used, we set
* the tunnel_proxy bit.
*************************************************************/
if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
conn->bits.tunnel_proxy = TRUE;
#endif
/*************************************************************
* Figure out the remote port number and fix it in the URL
*************************************************************/
result = parse_remote_port(data, conn);
if(result)
goto out;
/* Check for overridden login details and set them accordingly so that
they are known when protocol->setup_connection is called! */
result = override_login(data, conn);
if(result)
goto out;
result = set_login(conn); /* default credentials */
if(result)
goto out;
/*************************************************************
* Process the "connect to" linked list of hostname/port mappings.
* Do this after the remote port number has been fixed in the URL.
*************************************************************/
result = parse_connect_to_slist(data, conn, data->set.connect_to);
if(result)
goto out;
/*************************************************************
* IDN-convert the hostnames
*************************************************************/
result = Curl_idnconvert_hostname(data, &conn->host);
if(result)
goto out;
if(conn->bits.conn_to_host) {
result = Curl_idnconvert_hostname(data, &conn->conn_to_host);
if(result)
goto out;
}
#ifndef CURL_DISABLE_PROXY
if(conn->bits.httpproxy) {
result = Curl_idnconvert_hostname(data, &conn->http_proxy.host);
if(result)
goto out;
}
if(conn->bits.socksproxy) {
result = Curl_idnconvert_hostname(data, &conn->socks_proxy.host);
if(result)
goto out;
}
#endif
/*************************************************************
* Check whether the host and the "connect to host" are equal.
* Do this after the hostnames have been IDN-converted.
*************************************************************/
if(conn->bits.conn_to_host &&
strcasecompare(conn->conn_to_host.name, conn->host.name)) {
conn->bits.conn_to_host = FALSE;
}
/*************************************************************
* Check whether the port and the "connect to port" are equal.
* Do this after the remote port number has been fixed in the URL.
*************************************************************/
if(conn->bits.conn_to_port && conn->conn_to_port == conn->remote_port) {
conn->bits.conn_to_port = FALSE;
}
#ifndef CURL_DISABLE_PROXY
/*************************************************************
* If the "connect to" feature is used with an HTTP proxy,
* we set the tunnel_proxy bit.
*************************************************************/
if((conn->bits.conn_to_host || conn->bits.conn_to_port) &&
conn->bits.httpproxy)
conn->bits.tunnel_proxy = TRUE;
#endif
/*************************************************************
* Setup internals depending on protocol. Needs to be done after
* we figured out what/if proxy to use.
*************************************************************/
result = setup_connection_internals(data, conn);
if(result)
goto out;
conn->recv[FIRSTSOCKET] = Curl_recv_plain;
conn->send[FIRSTSOCKET] = Curl_send_plain;
conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
conn->send[SECONDARYSOCKET] = Curl_send_plain;
conn->bits.tcp_fastopen = data->set.tcp_fastopen;
/***********************************************************************
* file: is a special case in that it doesn't need a network connection
***********************************************************************/
#ifndef CURL_DISABLE_FILE
if(conn->handler->flags & PROTOPT_NONETWORK) {
bool done;
/* this is supposed to be the connect function so we better at least check
that the file is present here! */
DEBUGASSERT(conn->handler->connect_it);
Curl_persistconninfo(data, conn, NULL, -1);
result = conn->handler->connect_it(data, &done);
/* Setup a "faked" transfer that'll do nothing */
if(!result) {
conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
Curl_attach_connnection(data, conn);
result = Curl_conncache_add_conn(data);
if(result)
goto out;
/*
* Setup whatever necessary for a resumed transfer
*/
result = setup_range(data);
if(result) {
DEBUGASSERT(conn->handler->done);
/* we ignore the return code for the protocol-specific DONE */
(void)conn->handler->done(data, result, FALSE);
goto out;
}
Curl_setup_transfer(data, -1, -1, FALSE, -1);
}
/* since we skip do_init() */
Curl_init_do(data, conn);
goto out;
}
#endif
/* Get a cloned copy of the SSL config situation stored in the
connection struct. But to get this going nicely, we must first make
sure that the strings in the master copy are pointing to the correct
strings in the session handle strings array!
Keep in mind that the pointers in the master copy are pointing to strings
that will be freed as part of the Curl_easy struct, but all cloned
copies will be separately allocated.
*/
data->set.ssl.primary.CApath = data->set.str[STRING_SSL_CAPATH];
data->set.ssl.primary.CAfile = data->set.str[STRING_SSL_CAFILE];
data->set.ssl.primary.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
data->set.ssl.primary.issuercert_blob = data->set.blobs[BLOB_SSL_ISSUERCERT];
data->set.ssl.primary.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
data->set.ssl.primary.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
data->set.ssl.primary.cipher_list =
data->set.str[STRING_SSL_CIPHER_LIST];
data->set.ssl.primary.cipher_list13 =
data->set.str[STRING_SSL_CIPHER13_LIST];
data->set.ssl.primary.pinned_key =
data->set.str[STRING_SSL_PINNEDPUBLICKEY];
data->set.ssl.primary.cert_blob = data->set.blobs[BLOB_CERT];
data->set.ssl.primary.ca_info_blob = data->set.blobs[BLOB_CAINFO];
data->set.ssl.primary.curves = data->set.str[STRING_SSL_EC_CURVES];
#ifndef CURL_DISABLE_PROXY
data->set.proxy_ssl.primary.CApath = data->set.str[STRING_SSL_CAPATH_PROXY];
data->set.proxy_ssl.primary.CAfile = data->set.str[STRING_SSL_CAFILE_PROXY];
data->set.proxy_ssl.primary.random_file =
data->set.str[STRING_SSL_RANDOM_FILE];
data->set.proxy_ssl.primary.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
data->set.proxy_ssl.primary.cipher_list =
data->set.str[STRING_SSL_CIPHER_LIST_PROXY];
data->set.proxy_ssl.primary.cipher_list13 =
data->set.str[STRING_SSL_CIPHER13_LIST_PROXY];
data->set.proxy_ssl.primary.pinned_key =
data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY];
data->set.proxy_ssl.primary.cert_blob = data->set.blobs[BLOB_CERT_PROXY];
data->set.proxy_ssl.primary.ca_info_blob =
data->set.blobs[BLOB_CAINFO_PROXY];
data->set.proxy_ssl.primary.issuercert =
data->set.str[STRING_SSL_ISSUERCERT_PROXY];
data->set.proxy_ssl.primary.issuercert_blob =
data->set.blobs[BLOB_SSL_ISSUERCERT_PROXY];
data->set.proxy_ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE_PROXY];
data->set.proxy_ssl.cert_type = data->set.str[STRING_CERT_TYPE_PROXY];
data->set.proxy_ssl.key = data->set.str[STRING_KEY_PROXY];
data->set.proxy_ssl.key_type = data->set.str[STRING_KEY_TYPE_PROXY];
data->set.proxy_ssl.key_passwd = data->set.str[STRING_KEY_PASSWD_PROXY];
data->set.proxy_ssl.primary.clientcert = data->set.str[STRING_CERT_PROXY];
data->set.proxy_ssl.key_blob = data->set.blobs[BLOB_KEY_PROXY];
#endif
data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
data->set.ssl.cert_type = data->set.str[STRING_CERT_TYPE];
data->set.ssl.key = data->set.str[STRING_KEY];
data->set.ssl.key_type = data->set.str[STRING_KEY_TYPE];
data->set.ssl.key_passwd = data->set.str[STRING_KEY_PASSWD];
data->set.ssl.primary.clientcert = data->set.str[STRING_CERT];
#ifdef USE_TLS_SRP
data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
#ifndef CURL_DISABLE_PROXY
data->set.proxy_ssl.username = data->set.str[STRING_TLSAUTH_USERNAME_PROXY];
data->set.proxy_ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD_PROXY];
#endif
#endif
data->set.ssl.key_blob = data->set.blobs[BLOB_KEY];
if(!Curl_clone_primary_ssl_config(&data->set.ssl.primary,
&conn->ssl_config)) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
#ifndef CURL_DISABLE_PROXY
if(!Curl_clone_primary_ssl_config(&data->set.proxy_ssl.primary,
&conn->proxy_ssl_config)) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
#endif
prune_dead_connections(data);
/*************************************************************
* Check the current list of connections to see if we can
* re-use an already existing one or if we have to create a
* new one.
*************************************************************/
DEBUGASSERT(conn->user);
DEBUGASSERT(conn->passwd);
/* reuse_fresh is TRUE if we are told to use a new connection by force, but
we only acknowledge this option if this is not a re-used connection
already (which happens due to follow-location or during a HTTP
authentication phase). CONNECT_ONLY transfers also refuse reuse. */
if((data->set.reuse_fresh && !data->state.this_is_a_follow) ||
data->set.connect_only)
reuse = FALSE;
else
reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse, &waitpipe);
if(reuse) {
/*
* We already have a connection for this, we got the former connection in
* the conn_temp variable and thus we need to cleanup the one we just
* allocated before we can move along and use the previously existing one.
*/
reuse_conn(data, conn, conn_temp);
#ifdef USE_SSL
free(conn->ssl_extra);
#endif
free(conn); /* we don't need this anymore */
conn = conn_temp;
*in_connect = conn;
#ifndef CURL_DISABLE_PROXY
infof(data, "Re-using existing connection! (#%ld) with %s %s",
conn->connection_id,
conn->bits.proxy?"proxy":"host",
conn->socks_proxy.host.name ? conn->socks_proxy.host.dispname :
conn->http_proxy.host.name ? conn->http_proxy.host.dispname :
conn->host.dispname);
#else
infof(data, "Re-using existing connection! (#%ld) with host %s",
conn->connection_id, conn->host.dispname);
#endif
}
else {
/* We have decided that we want a new connection. However, we may not
be able to do that if we have reached the limit of how many
connections we are allowed to open. */
if(conn->handler->flags & PROTOPT_ALPN_NPN) {
/* The protocol wants it, so set the bits if enabled in the easy handle
(default) */
if(data->set.ssl_enable_alpn)
conn->bits.tls_enable_alpn = TRUE;
if(data->set.ssl_enable_npn)
conn->bits.tls_enable_npn = TRUE;
}
if(waitpipe)
/* There is a connection that *might* become usable for multiplexing
"soon", and we wait for that */
connections_available = FALSE;
else {
/* this gets a lock on the conncache */
const char *bundlehost;
struct connectbundle *bundle =
Curl_conncache_find_bundle(data, conn, data->state.conn_cache,
&bundlehost);
if(max_host_connections > 0 && bundle &&
(bundle->num_connections >= max_host_connections)) {
struct connectdata *conn_candidate;
/* The bundle is full. Extract the oldest connection. */
conn_candidate = Curl_conncache_extract_bundle(data, bundle);
CONNCACHE_UNLOCK(data);
if(conn_candidate)
(void)Curl_disconnect(data, conn_candidate, FALSE);
else {
infof(data, "No more connections allowed to host %s: %zu",
bundlehost, max_host_connections);
connections_available = FALSE;
}
}
else
CONNCACHE_UNLOCK(data);
}
if(connections_available &&
(max_total_connections > 0) &&
(Curl_conncache_size(data) >= max_total_connections)) {
struct connectdata *conn_candidate;
/* The cache is full. Let's see if we can kill a connection. */
conn_candidate = Curl_conncache_extract_oldest(data);
if(conn_candidate)
(void)Curl_disconnect(data, conn_candidate, FALSE);
else {
infof(data, "No connections available in cache");
connections_available = FALSE;
}
}
if(!connections_available) {
infof(data, "No connections available.");
conn_free(conn);
*in_connect = NULL;
result = CURLE_NO_CONNECTION_AVAILABLE;
goto out;
}
else {
/*
* This is a brand new connection, so let's store it in the connection
* cache of ours!
*/
Curl_attach_connnection(data, conn);
result = Curl_conncache_add_conn(data);
if(result)
goto out;
}
#if defined(USE_NTLM)
/* If NTLM is requested in a part of this connection, make sure we don't
assume the state is fine as this is a fresh connection and NTLM is
connection based. */
if((data->state.authhost.picked & (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) &&
data->state.authhost.done) {
infof(data, "NTLM picked AND auth done set, clear picked!");
data->state.authhost.picked = CURLAUTH_NONE;
data->state.authhost.done = FALSE;
}
if((data->state.authproxy.picked & (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) &&
data->state.authproxy.done) {
infof(data, "NTLM-proxy picked AND auth done set, clear picked!");
data->state.authproxy.picked = CURLAUTH_NONE;
data->state.authproxy.done = FALSE;
}
#endif
}
/* Setup and init stuff before DO starts, in preparing for the transfer. */
Curl_init_do(data, conn);
/*
* Setup whatever necessary for a resumed transfer
*/
result = setup_range(data);
if(result)
goto out;
/* Continue connectdata initialization here. */
/*
* Inherit the proper values from the urldata struct AFTER we have arranged
* the persistent connection stuff
*/
conn->seek_func = data->set.seek_func;
conn->seek_client = data->set.seek_client;
/*************************************************************
* Resolve the address of the server or proxy
*************************************************************/
result = resolve_server(data, conn, async);
/* Strip trailing dots. resolve_server copied the name. */
strip_trailing_dot(&conn->host);
#ifndef CURL_DISABLE_PROXY
if(conn->bits.httpproxy)
strip_trailing_dot(&conn->http_proxy.host);
if(conn->bits.socksproxy)
strip_trailing_dot(&conn->socks_proxy.host);
#endif
if(conn->bits.conn_to_host)
strip_trailing_dot(&conn->conn_to_host);
out:
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22924/vuln.c
+502
View File
@@ -0,0 +1,502 @@
/* Provenance: curl/curl create_conn (vuln).
* repo: curl/curl
* commit: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* parent: fd9b40bf8dfd43edcbc0d254d613d95a11061c05
* commit_url: https://github.com/curl/curl/commit/5ea3145850ebff1dc2b13d17440300a01ca38161
* cve: CVE-2021-22924
* license: curl
* function: create_conn
* relpath: lib/url.c
*/
* create_conn() sets up a new connectdata struct, or re-uses an already
* existing one, and resolves host name.
*
* if this function returns CURLE_OK and *async is set to TRUE, the resolve
* response will be coming asynchronously. If *async is FALSE, the name is
* already resolved.
*
* @param data The sessionhandle pointer
* @param in_connect is set to the next connection data pointer
* @param async is set TRUE when an async DNS resolution is pending
* @see Curl_setup_conn()
*
*/
static CURLcode create_conn(struct Curl_easy *data,
struct connectdata **in_connect,
bool *async)
{
CURLcode result = CURLE_OK;
struct connectdata *conn;
struct connectdata *conn_temp = NULL;
bool reuse;
bool connections_available = TRUE;
bool force_reuse = FALSE;
bool waitpipe = FALSE;
size_t max_host_connections = Curl_multi_max_host_connections(data->multi);
size_t max_total_connections = Curl_multi_max_total_connections(data->multi);
*async = FALSE;
*in_connect = NULL;
/*************************************************************
* Check input data
*************************************************************/
if(!data->state.url) {
result = CURLE_URL_MALFORMAT;
goto out;
}
/* First, split up the current URL in parts so that we can use the
parts for checking against the already present connections. In order
to not have to modify everything at once, we allocate a temporary
connection data struct and fill in for comparison purposes. */
conn = allocate_conn(data);
if(!conn) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
/* We must set the return variable as soon as possible, so that our
parent can cleanup any possible allocs we may have done before
any failure */
*in_connect = conn;
result = parseurlandfillconn(data, conn);
if(result)
goto out;
if(data->set.str[STRING_SASL_AUTHZID]) {
conn->sasl_authzid = strdup(data->set.str[STRING_SASL_AUTHZID]);
if(!conn->sasl_authzid) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
}
#ifdef USE_UNIX_SOCKETS
if(data->set.str[STRING_UNIX_SOCKET_PATH]) {
conn->unix_domain_socket = strdup(data->set.str[STRING_UNIX_SOCKET_PATH]);
if(!conn->unix_domain_socket) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
conn->bits.abstract_unix_socket = data->set.abstract_unix_socket;
}
#endif
/* After the unix socket init but before the proxy vars are used, parse and
initialize the proxy vars */
#ifndef CURL_DISABLE_PROXY
result = create_conn_helper_init_proxy(data, conn);
if(result)
goto out;
/*************************************************************
* If the protocol is using SSL and HTTP proxy is used, we set
* the tunnel_proxy bit.
*************************************************************/
if((conn->given->flags&PROTOPT_SSL) && conn->bits.httpproxy)
conn->bits.tunnel_proxy = TRUE;
#endif
/*************************************************************
* Figure out the remote port number and fix it in the URL
*************************************************************/
result = parse_remote_port(data, conn);
if(result)
goto out;
/* Check for overridden login details and set them accordingly so that
they are known when protocol->setup_connection is called! */
result = override_login(data, conn);
if(result)
goto out;
result = set_login(conn); /* default credentials */
if(result)
goto out;
/*************************************************************
* Process the "connect to" linked list of hostname/port mappings.
* Do this after the remote port number has been fixed in the URL.
*************************************************************/
result = parse_connect_to_slist(data, conn, data->set.connect_to);
if(result)
goto out;
/*************************************************************
* IDN-convert the hostnames
*************************************************************/
result = Curl_idnconvert_hostname(data, &conn->host);
if(result)
goto out;
if(conn->bits.conn_to_host) {
result = Curl_idnconvert_hostname(data, &conn->conn_to_host);
if(result)
goto out;
}
#ifndef CURL_DISABLE_PROXY
if(conn->bits.httpproxy) {
result = Curl_idnconvert_hostname(data, &conn->http_proxy.host);
if(result)
goto out;
}
if(conn->bits.socksproxy) {
result = Curl_idnconvert_hostname(data, &conn->socks_proxy.host);
if(result)
goto out;
}
#endif
/*************************************************************
* Check whether the host and the "connect to host" are equal.
* Do this after the hostnames have been IDN-converted.
*************************************************************/
if(conn->bits.conn_to_host &&
strcasecompare(conn->conn_to_host.name, conn->host.name)) {
conn->bits.conn_to_host = FALSE;
}
/*************************************************************
* Check whether the port and the "connect to port" are equal.
* Do this after the remote port number has been fixed in the URL.
*************************************************************/
if(conn->bits.conn_to_port && conn->conn_to_port == conn->remote_port) {
conn->bits.conn_to_port = FALSE;
}
#ifndef CURL_DISABLE_PROXY
/*************************************************************
* If the "connect to" feature is used with an HTTP proxy,
* we set the tunnel_proxy bit.
*************************************************************/
if((conn->bits.conn_to_host || conn->bits.conn_to_port) &&
conn->bits.httpproxy)
conn->bits.tunnel_proxy = TRUE;
#endif
/*************************************************************
* Setup internals depending on protocol. Needs to be done after
* we figured out what/if proxy to use.
*************************************************************/
result = setup_connection_internals(data, conn);
if(result)
goto out;
conn->recv[FIRSTSOCKET] = Curl_recv_plain;
conn->send[FIRSTSOCKET] = Curl_send_plain;
conn->recv[SECONDARYSOCKET] = Curl_recv_plain;
conn->send[SECONDARYSOCKET] = Curl_send_plain;
conn->bits.tcp_fastopen = data->set.tcp_fastopen;
/***********************************************************************
* file: is a special case in that it doesn't need a network connection
***********************************************************************/
#ifndef CURL_DISABLE_FILE
if(conn->handler->flags & PROTOPT_NONETWORK) {
bool done;
/* this is supposed to be the connect function so we better at least check
that the file is present here! */
DEBUGASSERT(conn->handler->connect_it);
Curl_persistconninfo(data, conn, NULL, -1);
result = conn->handler->connect_it(data, &done);
/* Setup a "faked" transfer that'll do nothing */
if(!result) {
conn->bits.tcpconnect[FIRSTSOCKET] = TRUE; /* we are "connected */
Curl_attach_connnection(data, conn);
result = Curl_conncache_add_conn(data);
if(result)
goto out;
/*
* Setup whatever necessary for a resumed transfer
*/
result = setup_range(data);
if(result) {
DEBUGASSERT(conn->handler->done);
/* we ignore the return code for the protocol-specific DONE */
(void)conn->handler->done(data, result, FALSE);
goto out;
}
Curl_setup_transfer(data, -1, -1, FALSE, -1);
}
/* since we skip do_init() */
Curl_init_do(data, conn);
goto out;
}
#endif
/* Get a cloned copy of the SSL config situation stored in the
connection struct. But to get this going nicely, we must first make
sure that the strings in the master copy are pointing to the correct
strings in the session handle strings array!
Keep in mind that the pointers in the master copy are pointing to strings
that will be freed as part of the Curl_easy struct, but all cloned
copies will be separately allocated.
*/
data->set.ssl.primary.CApath = data->set.str[STRING_SSL_CAPATH];
data->set.ssl.primary.CAfile = data->set.str[STRING_SSL_CAFILE];
data->set.ssl.primary.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
data->set.ssl.primary.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
data->set.ssl.primary.cipher_list =
data->set.str[STRING_SSL_CIPHER_LIST];
data->set.ssl.primary.cipher_list13 =
data->set.str[STRING_SSL_CIPHER13_LIST];
data->set.ssl.primary.pinned_key =
data->set.str[STRING_SSL_PINNEDPUBLICKEY];
data->set.ssl.primary.cert_blob = data->set.blobs[BLOB_CERT];
data->set.ssl.primary.ca_info_blob = data->set.blobs[BLOB_CAINFO];
data->set.ssl.primary.curves = data->set.str[STRING_SSL_EC_CURVES];
#ifndef CURL_DISABLE_PROXY
data->set.proxy_ssl.primary.CApath = data->set.str[STRING_SSL_CAPATH_PROXY];
data->set.proxy_ssl.primary.CAfile = data->set.str[STRING_SSL_CAFILE_PROXY];
data->set.proxy_ssl.primary.random_file =
data->set.str[STRING_SSL_RANDOM_FILE];
data->set.proxy_ssl.primary.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
data->set.proxy_ssl.primary.cipher_list =
data->set.str[STRING_SSL_CIPHER_LIST_PROXY];
data->set.proxy_ssl.primary.cipher_list13 =
data->set.str[STRING_SSL_CIPHER13_LIST_PROXY];
data->set.proxy_ssl.primary.pinned_key =
data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY];
data->set.proxy_ssl.primary.cert_blob = data->set.blobs[BLOB_CERT_PROXY];
data->set.proxy_ssl.primary.ca_info_blob =
data->set.blobs[BLOB_CAINFO_PROXY];
data->set.proxy_ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE_PROXY];
data->set.proxy_ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT_PROXY];
data->set.proxy_ssl.cert_type = data->set.str[STRING_CERT_TYPE_PROXY];
data->set.proxy_ssl.key = data->set.str[STRING_KEY_PROXY];
data->set.proxy_ssl.key_type = data->set.str[STRING_KEY_TYPE_PROXY];
data->set.proxy_ssl.key_passwd = data->set.str[STRING_KEY_PASSWD_PROXY];
data->set.proxy_ssl.primary.clientcert = data->set.str[STRING_CERT_PROXY];
data->set.proxy_ssl.key_blob = data->set.blobs[BLOB_KEY_PROXY];
#endif
data->set.ssl.CRLfile = data->set.str[STRING_SSL_CRLFILE];
data->set.ssl.issuercert = data->set.str[STRING_SSL_ISSUERCERT];
data->set.ssl.cert_type = data->set.str[STRING_CERT_TYPE];
data->set.ssl.key = data->set.str[STRING_KEY];
data->set.ssl.key_type = data->set.str[STRING_KEY_TYPE];
data->set.ssl.key_passwd = data->set.str[STRING_KEY_PASSWD];
data->set.ssl.primary.clientcert = data->set.str[STRING_CERT];
#ifdef USE_TLS_SRP
data->set.ssl.username = data->set.str[STRING_TLSAUTH_USERNAME];
data->set.ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD];
#ifndef CURL_DISABLE_PROXY
data->set.proxy_ssl.username = data->set.str[STRING_TLSAUTH_USERNAME_PROXY];
data->set.proxy_ssl.password = data->set.str[STRING_TLSAUTH_PASSWORD_PROXY];
#endif
#endif
data->set.ssl.key_blob = data->set.blobs[BLOB_KEY];
data->set.ssl.issuercert_blob = data->set.blobs[BLOB_SSL_ISSUERCERT];
if(!Curl_clone_primary_ssl_config(&data->set.ssl.primary,
&conn->ssl_config)) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
#ifndef CURL_DISABLE_PROXY
if(!Curl_clone_primary_ssl_config(&data->set.proxy_ssl.primary,
&conn->proxy_ssl_config)) {
result = CURLE_OUT_OF_MEMORY;
goto out;
}
#endif
prune_dead_connections(data);
/*************************************************************
* Check the current list of connections to see if we can
* re-use an already existing one or if we have to create a
* new one.
*************************************************************/
DEBUGASSERT(conn->user);
DEBUGASSERT(conn->passwd);
/* reuse_fresh is TRUE if we are told to use a new connection by force, but
we only acknowledge this option if this is not a re-used connection
already (which happens due to follow-location or during a HTTP
authentication phase). CONNECT_ONLY transfers also refuse reuse. */
if((data->set.reuse_fresh && !data->state.this_is_a_follow) ||
data->set.connect_only)
reuse = FALSE;
else
reuse = ConnectionExists(data, conn, &conn_temp, &force_reuse, &waitpipe);
if(reuse) {
/*
* We already have a connection for this, we got the former connection in
* the conn_temp variable and thus we need to cleanup the one we just
* allocated before we can move along and use the previously existing one.
*/
reuse_conn(data, conn, conn_temp);
#ifdef USE_SSL
free(conn->ssl_extra);
#endif
free(conn); /* we don't need this anymore */
conn = conn_temp;
*in_connect = conn;
#ifndef CURL_DISABLE_PROXY
infof(data, "Re-using existing connection! (#%ld) with %s %s",
conn->connection_id,
conn->bits.proxy?"proxy":"host",
conn->socks_proxy.host.name ? conn->socks_proxy.host.dispname :
conn->http_proxy.host.name ? conn->http_proxy.host.dispname :
conn->host.dispname);
#else
infof(data, "Re-using existing connection! (#%ld) with host %s",
conn->connection_id, conn->host.dispname);
#endif
}
else {
/* We have decided that we want a new connection. However, we may not
be able to do that if we have reached the limit of how many
connections we are allowed to open. */
if(conn->handler->flags & PROTOPT_ALPN_NPN) {
/* The protocol wants it, so set the bits if enabled in the easy handle
(default) */
if(data->set.ssl_enable_alpn)
conn->bits.tls_enable_alpn = TRUE;
if(data->set.ssl_enable_npn)
conn->bits.tls_enable_npn = TRUE;
}
if(waitpipe)
/* There is a connection that *might* become usable for multiplexing
"soon", and we wait for that */
connections_available = FALSE;
else {
/* this gets a lock on the conncache */
const char *bundlehost;
struct connectbundle *bundle =
Curl_conncache_find_bundle(data, conn, data->state.conn_cache,
&bundlehost);
if(max_host_connections > 0 && bundle &&
(bundle->num_connections >= max_host_connections)) {
struct connectdata *conn_candidate;
/* The bundle is full. Extract the oldest connection. */
conn_candidate = Curl_conncache_extract_bundle(data, bundle);
CONNCACHE_UNLOCK(data);
if(conn_candidate)
(void)Curl_disconnect(data, conn_candidate, FALSE);
else {
infof(data, "No more connections allowed to host %s: %zu",
bundlehost, max_host_connections);
connections_available = FALSE;
}
}
else
CONNCACHE_UNLOCK(data);
}
if(connections_available &&
(max_total_connections > 0) &&
(Curl_conncache_size(data) >= max_total_connections)) {
struct connectdata *conn_candidate;
/* The cache is full. Let's see if we can kill a connection. */
conn_candidate = Curl_conncache_extract_oldest(data);
if(conn_candidate)
(void)Curl_disconnect(data, conn_candidate, FALSE);
else {
infof(data, "No connections available in cache");
connections_available = FALSE;
}
}
if(!connections_available) {
infof(data, "No connections available.");
conn_free(conn);
*in_connect = NULL;
result = CURLE_NO_CONNECTION_AVAILABLE;
goto out;
}
else {
/*
* This is a brand new connection, so let's store it in the connection
* cache of ours!
*/
Curl_attach_connnection(data, conn);
result = Curl_conncache_add_conn(data);
if(result)
goto out;
}
#if defined(USE_NTLM)
/* If NTLM is requested in a part of this connection, make sure we don't
assume the state is fine as this is a fresh connection and NTLM is
connection based. */
if((data->state.authhost.picked & (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) &&
data->state.authhost.done) {
infof(data, "NTLM picked AND auth done set, clear picked!");
data->state.authhost.picked = CURLAUTH_NONE;
data->state.authhost.done = FALSE;
}
if((data->state.authproxy.picked & (CURLAUTH_NTLM | CURLAUTH_NTLM_WB)) &&
data->state.authproxy.done) {
infof(data, "NTLM-proxy picked AND auth done set, clear picked!");
data->state.authproxy.picked = CURLAUTH_NONE;
data->state.authproxy.done = FALSE;
}
#endif
}
/* Setup and init stuff before DO starts, in preparing for the transfer. */
Curl_init_do(data, conn);
/*
* Setup whatever necessary for a resumed transfer
*/
result = setup_range(data);
if(result)
goto out;
/* Continue connectdata initialization here. */
/*
* Inherit the proper values from the urldata struct AFTER we have arranged
* the persistent connection stuff
*/
conn->seek_func = data->set.seek_func;
conn->seek_client = data->set.seek_client;
/*************************************************************
* Resolve the address of the server or proxy
*************************************************************/
result = resolve_server(data, conn, async);
/* Strip trailing dots. resolve_server copied the name. */
strip_trailing_dot(&conn->host);
#ifndef CURL_DISABLE_PROXY
if(conn->bits.httpproxy)
strip_trailing_dot(&conn->http_proxy.host);
if(conn->bits.socksproxy)
strip_trailing_dot(&conn->socks_proxy.host);
#endif
if(conn->bits.conn_to_host)
strip_trailing_dot(&conn->conn_to_host);
out:
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22925/fixed.c
+91
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@@ -0,0 +1,91 @@
/* Provenance: curl/curl suboption (fixed).
* repo: curl/curl
* commit: 894f6ec730597eb243618d33cc84d71add8d6a8a
* parent: 12284e008bad5156b67d0ac253331a96d77201d1
* commit_url: https://github.com/curl/curl/commit/894f6ec730597eb243618d33cc84d71add8d6a8a
* cve: CVE-2021-22925
* license: curl
* function: suboption
* relpath: lib/telnet.c
*/
* suboption()
*
* Look at the sub-option buffer, and try to be helpful to the other
* side.
*/
static void suboption(struct Curl_easy *data)
{
struct curl_slist *v;
unsigned char temp[2048];
ssize_t bytes_written;
size_t len;
int err;
char varname[128] = "";
char varval[128] = "";
struct TELNET *tn = data->req.p.telnet;
struct connectdata *conn = data->conn;
printsub(data, '<', (unsigned char *)tn->subbuffer, CURL_SB_LEN(tn) + 2);
switch(CURL_SB_GET(tn)) {
case CURL_TELOPT_TTYPE:
len = strlen(tn->subopt_ttype) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_TTYPE,
CURL_TELQUAL_IS, tn->subopt_ttype, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_XDISPLOC:
len = strlen(tn->subopt_xdisploc) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_XDISPLOC,
CURL_TELQUAL_IS, tn->subopt_xdisploc, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_NEW_ENVIRON:
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_NEW_ENVIRON,
CURL_TELQUAL_IS);
len = 4;
for(v = tn->telnet_vars; v; v = v->next) {
size_t tmplen = (strlen(v->data) + 1);
/* Add the variable only if it fits */
if(len + tmplen < (int)sizeof(temp)-6) {
int rv;
char sep[2] = "";
varval[0] = 0;
rv = sscanf(v->data, "%127[^,]%1[,]%127s", varname, sep, varval);
if(rv == 1)
len += msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%s", CURL_NEW_ENV_VAR, varname);
else if(rv >= 2)
len += msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%s%c%s", CURL_NEW_ENV_VAR, varname,
CURL_NEW_ENV_VALUE, varval);
}
}
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%c", CURL_IAC, CURL_SE);
len += 2;
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
}
return;
}
benchmarks/pairs/vfc/curl-cve-2021-22925/vuln.c
+86
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@@ -0,0 +1,86 @@
/* Provenance: curl/curl suboption (vuln).
* repo: curl/curl
* commit: 12284e008bad5156b67d0ac253331a96d77201d1
* parent: 12284e008bad5156b67d0ac253331a96d77201d1
* commit_url: https://github.com/curl/curl/commit/894f6ec730597eb243618d33cc84d71add8d6a8a
* cve: CVE-2021-22925
* license: curl
* function: suboption
* relpath: lib/telnet.c
*/
* suboption()
*
* Look at the sub-option buffer, and try to be helpful to the other
* side.
*/
static void suboption(struct Curl_easy *data)
{
struct curl_slist *v;
unsigned char temp[2048];
ssize_t bytes_written;
size_t len;
int err;
char varname[128] = "";
char varval[128] = "";
struct TELNET *tn = data->req.p.telnet;
struct connectdata *conn = data->conn;
printsub(data, '<', (unsigned char *)tn->subbuffer, CURL_SB_LEN(tn) + 2);
switch(CURL_SB_GET(tn)) {
case CURL_TELOPT_TTYPE:
len = strlen(tn->subopt_ttype) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_TTYPE,
CURL_TELQUAL_IS, tn->subopt_ttype, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_XDISPLOC:
len = strlen(tn->subopt_xdisploc) + 4 + 2;
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c%s%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_XDISPLOC,
CURL_TELQUAL_IS, tn->subopt_xdisploc, CURL_IAC, CURL_SE);
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
case CURL_TELOPT_NEW_ENVIRON:
msnprintf((char *)temp, sizeof(temp),
"%c%c%c%c", CURL_IAC, CURL_SB, CURL_TELOPT_NEW_ENVIRON,
CURL_TELQUAL_IS);
len = 4;
for(v = tn->telnet_vars; v; v = v->next) {
size_t tmplen = (strlen(v->data) + 1);
/* Add the variable only if it fits */
if(len + tmplen < (int)sizeof(temp)-6) {
if(sscanf(v->data, "%127[^,],%127s", varname, varval) == 2) {
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%s%c%s", CURL_NEW_ENV_VAR, varname,
CURL_NEW_ENV_VALUE, varval);
len += tmplen;
}
}
}
msnprintf((char *)&temp[len], sizeof(temp) - len,
"%c%c", CURL_IAC, CURL_SE);
len += 2;
bytes_written = swrite(conn->sock[FIRSTSOCKET], temp, len);
if(bytes_written < 0) {
err = SOCKERRNO;
failf(data,"Sending data failed (%d)",err);
}
printsub(data, '>', &temp[2], len-2);
break;
}
return;
}
benchmarks/pairs/vfc/curl-cve-2021-22945/fixed.c
+36
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@@ -0,0 +1,36 @@
/* Provenance: curl/curl mqtt_send (fixed).
* repo: curl/curl
* commit: 43157490a5054bd24256fe12876931e8abc9df49
* parent: 409a4412409371db00af0a3fe987e517bfab3d19
* commit_url: https://github.com/curl/curl/commit/43157490a5054bd24256fe12876931e8abc9df49
* cve: CVE-2021-22945
* license: curl
* function: mqtt_send
* relpath: lib/mqtt.c
*/
static CURLcode mqtt_send(struct Curl_easy *data,
char *buf, size_t len)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
struct MQTT *mq = data->req.p.mqtt;
ssize_t n;
result = Curl_write(data, sockfd, buf, len, &n);
if(!result)
Curl_debug(data, CURLINFO_HEADER_OUT, buf, (size_t)n);
if(len != (size_t)n) {
size_t nsend = len - n;
char *sendleftovers = Curl_memdup(&buf[n], nsend);
if(!sendleftovers)
return CURLE_OUT_OF_MEMORY;
mq->sendleftovers = sendleftovers;
mq->nsend = nsend;
}
else {
mq->sendleftovers = NULL;
mq->nsend = 0;
}
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22945/vuln.c
+32
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@@ -0,0 +1,32 @@
/* Provenance: curl/curl mqtt_send (vuln).
* repo: curl/curl
* commit: 409a4412409371db00af0a3fe987e517bfab3d19
* parent: 409a4412409371db00af0a3fe987e517bfab3d19
* commit_url: https://github.com/curl/curl/commit/43157490a5054bd24256fe12876931e8abc9df49
* cve: CVE-2021-22945
* license: curl
* function: mqtt_send
* relpath: lib/mqtt.c
*/
static CURLcode mqtt_send(struct Curl_easy *data,
char *buf, size_t len)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
struct MQTT *mq = data->req.p.mqtt;
ssize_t n;
result = Curl_write(data, sockfd, buf, len, &n);
if(!result)
Curl_debug(data, CURLINFO_HEADER_OUT, buf, (size_t)n);
if(len != (size_t)n) {
size_t nsend = len - n;
char *sendleftovers = Curl_memdup(&buf[n], nsend);
if(!sendleftovers)
return CURLE_OUT_OF_MEMORY;
mq->sendleftovers = sendleftovers;
mq->nsend = nsend;
}
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22946-imap_state_capability_re/fixed.c
+92
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@@ -0,0 +1,92 @@
/* Provenance: curl/curl imap_state_capability_resp (fixed).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 43157490a5054bd24256fe12876931e8abc9df49
* commit_url: https://github.com/curl/curl/commit/364f174724ef115c63d5e5dc1d3342c8a43b1cca
* cve: CVE-2021-22946
* license: curl
* function: imap_state_capability_resp
* relpath: lib/imap.c
*/
static CURLcode imap_state_capability_resp(struct Curl_easy *data,
int imapcode,
imapstate instate)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
struct imap_conn *imapc = &conn->proto.imapc;
const char *line = data->state.buffer;
(void)instate; /* no use for this yet */
/* Do we have a untagged response? */
if(imapcode == '*') {
line += 2;
/* Loop through the data line */
for(;;) {
size_t wordlen;
while(*line &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
line++;
}
if(!*line)
break;
/* Extract the word */
for(wordlen = 0; line[wordlen] && line[wordlen] != ' ' &&
line[wordlen] != '\t' && line[wordlen] != '\r' &&
line[wordlen] != '\n';)
wordlen++;
/* Does the server support the STARTTLS capability? */
if(wordlen == 8 && !memcmp(line, "STARTTLS", 8))
imapc->tls_supported = TRUE;
/* Has the server explicitly disabled clear text authentication? */
else if(wordlen == 13 && !memcmp(line, "LOGINDISABLED", 13))
imapc->login_disabled = TRUE;
/* Does the server support the SASL-IR capability? */
else if(wordlen == 7 && !memcmp(line, "SASL-IR", 7))
imapc->ir_supported = TRUE;
/* Do we have a SASL based authentication mechanism? */
else if(wordlen > 5 && !memcmp(line, "AUTH=", 5)) {
size_t llen;
unsigned short mechbit;
line += 5;
wordlen -= 5;
/* Test the word for a matching authentication mechanism */
mechbit = Curl_sasl_decode_mech(line, wordlen, &llen);
if(mechbit && llen == wordlen)
imapc->sasl.authmechs |= mechbit;
}
line += wordlen;
}
}
else if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
/* PREAUTH is not compatible with STARTTLS. */
if(imapcode == IMAP_RESP_OK && imapc->tls_supported && !imapc->preauth) {
/* Switch to TLS connection now */
result = imap_perform_starttls(data, conn);
}
else if(data->set.use_ssl <= CURLUSESSL_TRY)
result = imap_perform_authentication(data, conn);
else {
failf(data, "STARTTLS not available.");
result = CURLE_USE_SSL_FAILED;
}
}
else
result = imap_perform_authentication(data, conn);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22946-imap_state_capability_re/vuln.c
+96
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@@ -0,0 +1,96 @@
/* Provenance: curl/curl imap_state_capability_resp (vuln).
* repo: curl/curl
* commit: 43157490a5054bd24256fe12876931e8abc9df49
* parent: 43157490a5054bd24256fe12876931e8abc9df49
* commit_url: https://github.com/curl/curl/commit/364f174724ef115c63d5e5dc1d3342c8a43b1cca
* cve: CVE-2021-22946
* license: curl
* function: imap_state_capability_resp
* relpath: lib/imap.c
*/
static CURLcode imap_state_capability_resp(struct Curl_easy *data,
int imapcode,
imapstate instate)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
struct imap_conn *imapc = &conn->proto.imapc;
const char *line = data->state.buffer;
(void)instate; /* no use for this yet */
/* Do we have a untagged response? */
if(imapcode == '*') {
line += 2;
/* Loop through the data line */
for(;;) {
size_t wordlen;
while(*line &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
line++;
}
if(!*line)
break;
/* Extract the word */
for(wordlen = 0; line[wordlen] && line[wordlen] != ' ' &&
line[wordlen] != '\t' && line[wordlen] != '\r' &&
line[wordlen] != '\n';)
wordlen++;
/* Does the server support the STARTTLS capability? */
if(wordlen == 8 && !memcmp(line, "STARTTLS", 8))
imapc->tls_supported = TRUE;
/* Has the server explicitly disabled clear text authentication? */
else if(wordlen == 13 && !memcmp(line, "LOGINDISABLED", 13))
imapc->login_disabled = TRUE;
/* Does the server support the SASL-IR capability? */
else if(wordlen == 7 && !memcmp(line, "SASL-IR", 7))
imapc->ir_supported = TRUE;
/* Do we have a SASL based authentication mechanism? */
else if(wordlen > 5 && !memcmp(line, "AUTH=", 5)) {
size_t llen;
unsigned short mechbit;
line += 5;
wordlen -= 5;
/* Test the word for a matching authentication mechanism */
mechbit = Curl_sasl_decode_mech(line, wordlen, &llen);
if(mechbit && llen == wordlen)
imapc->sasl.authmechs |= mechbit;
}
line += wordlen;
}
}
else if(imapcode == IMAP_RESP_OK) {
if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
/* We don't have a SSL/TLS connection yet, but SSL is requested */
if(imapc->tls_supported)
/* Switch to TLS connection now */
result = imap_perform_starttls(data, conn);
else if(data->set.use_ssl == CURLUSESSL_TRY)
/* Fallback and carry on with authentication */
result = imap_perform_authentication(data, conn);
else {
failf(data, "STARTTLS not supported.");
result = CURLE_USE_SSL_FAILED;
}
}
else
result = imap_perform_authentication(data, conn);
}
else
result = imap_perform_authentication(data, conn);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22946-pop3_state_capa_resp/fixed.c
+94
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@@ -0,0 +1,94 @@
/* Provenance: curl/curl pop3_state_capa_resp (fixed).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 43157490a5054bd24256fe12876931e8abc9df49
* commit_url: https://github.com/curl/curl/commit/364f174724ef115c63d5e5dc1d3342c8a43b1cca
* cve: CVE-2021-22946
* license: curl
* function: pop3_state_capa_resp
* relpath: lib/pop3.c
*/
static CURLcode pop3_state_capa_resp(struct Curl_easy *data, int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
struct pop3_conn *pop3c = &conn->proto.pop3c;
const char *line = data->state.buffer;
size_t len = strlen(line);
(void)instate; /* no use for this yet */
/* Do we have a untagged continuation response? */
if(pop3code == '*') {
/* Does the server support the STLS capability? */
if(len >= 4 && !memcmp(line, "STLS", 4))
pop3c->tls_supported = TRUE;
/* Does the server support clear text authentication? */
else if(len >= 4 && !memcmp(line, "USER", 4))
pop3c->authtypes |= POP3_TYPE_CLEARTEXT;
/* Does the server support SASL based authentication? */
else if(len >= 5 && !memcmp(line, "SASL ", 5)) {
pop3c->authtypes |= POP3_TYPE_SASL;
/* Advance past the SASL keyword */
line += 5;
len -= 5;
/* Loop through the data line */
for(;;) {
size_t llen;
size_t wordlen;
unsigned short mechbit;
while(len &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
line++;
len--;
}
if(!len)
break;
/* Extract the word */
for(wordlen = 0; wordlen < len && line[wordlen] != ' ' &&
line[wordlen] != '\t' && line[wordlen] != '\r' &&
line[wordlen] != '\n';)
wordlen++;
/* Test the word for a matching authentication mechanism */
mechbit = Curl_sasl_decode_mech(line, wordlen, &llen);
if(mechbit && llen == wordlen)
pop3c->sasl.authmechs |= mechbit;
line += wordlen;
len -= wordlen;
}
}
}
else {
/* Clear text is supported when CAPA isn't recognised */
if(pop3code != '+')
pop3c->authtypes |= POP3_TYPE_CLEARTEXT;
if(!data->set.use_ssl || conn->ssl[FIRSTSOCKET].use)
result = pop3_perform_authentication(data, conn);
else if(pop3code == '+' && pop3c->tls_supported)
/* Switch to TLS connection now */
result = pop3_perform_starttls(data, conn);
else if(data->set.use_ssl <= CURLUSESSL_TRY)
/* Fallback and carry on with authentication */
result = pop3_perform_authentication(data, conn);
else {
failf(data, "STLS not supported.");
result = CURLE_USE_SSL_FAILED;
}
}
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22946-pop3_state_capa_resp/vuln.c
+99
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@@ -0,0 +1,99 @@
/* Provenance: curl/curl pop3_state_capa_resp (vuln).
* repo: curl/curl
* commit: 43157490a5054bd24256fe12876931e8abc9df49
* parent: 43157490a5054bd24256fe12876931e8abc9df49
* commit_url: https://github.com/curl/curl/commit/364f174724ef115c63d5e5dc1d3342c8a43b1cca
* cve: CVE-2021-22946
* license: curl
* function: pop3_state_capa_resp
* relpath: lib/pop3.c
*/
static CURLcode pop3_state_capa_resp(struct Curl_easy *data, int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
struct pop3_conn *pop3c = &conn->proto.pop3c;
const char *line = data->state.buffer;
size_t len = strlen(line);
(void)instate; /* no use for this yet */
/* Do we have a untagged continuation response? */
if(pop3code == '*') {
/* Does the server support the STLS capability? */
if(len >= 4 && !memcmp(line, "STLS", 4))
pop3c->tls_supported = TRUE;
/* Does the server support clear text authentication? */
else if(len >= 4 && !memcmp(line, "USER", 4))
pop3c->authtypes |= POP3_TYPE_CLEARTEXT;
/* Does the server support SASL based authentication? */
else if(len >= 5 && !memcmp(line, "SASL ", 5)) {
pop3c->authtypes |= POP3_TYPE_SASL;
/* Advance past the SASL keyword */
line += 5;
len -= 5;
/* Loop through the data line */
for(;;) {
size_t llen;
size_t wordlen;
unsigned short mechbit;
while(len &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
line++;
len--;
}
if(!len)
break;
/* Extract the word */
for(wordlen = 0; wordlen < len && line[wordlen] != ' ' &&
line[wordlen] != '\t' && line[wordlen] != '\r' &&
line[wordlen] != '\n';)
wordlen++;
/* Test the word for a matching authentication mechanism */
mechbit = Curl_sasl_decode_mech(line, wordlen, &llen);
if(mechbit && llen == wordlen)
pop3c->sasl.authmechs |= mechbit;
line += wordlen;
len -= wordlen;
}
}
}
else if(pop3code == '+') {
if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
/* We don't have a SSL/TLS connection yet, but SSL is requested */
if(pop3c->tls_supported)
/* Switch to TLS connection now */
result = pop3_perform_starttls(data, conn);
else if(data->set.use_ssl == CURLUSESSL_TRY)
/* Fallback and carry on with authentication */
result = pop3_perform_authentication(data, conn);
else {
failf(data, "STLS not supported.");
result = CURLE_USE_SSL_FAILED;
}
}
else
result = pop3_perform_authentication(data, conn);
}
else {
/* Clear text is supported when CAPA isn't recognised */
pop3c->authtypes |= POP3_TYPE_CLEARTEXT;
result = pop3_perform_authentication(data, conn);
}
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22946/fixed.c
+449
View File
@@ -0,0 +1,449 @@
/* Provenance: curl/curl ftp_statemachine (fixed).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 43157490a5054bd24256fe12876931e8abc9df49
* commit_url: https://github.com/curl/curl/commit/364f174724ef115c63d5e5dc1d3342c8a43b1cca
* cve: CVE-2021-22946
* license: curl
* function: ftp_statemachine
* relpath: lib/ftp.c
*/
static CURLcode ftp_statemachine(struct Curl_easy *data,
struct connectdata *conn)
{
CURLcode result;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int ftpcode;
struct ftp_conn *ftpc = &conn->proto.ftpc;
struct pingpong *pp = &ftpc->pp;
static const char ftpauth[][4] = { "SSL", "TLS" };
size_t nread = 0;
if(pp->sendleft)
return Curl_pp_flushsend(data, pp);
result = ftp_readresp(data, sock, pp, &ftpcode, &nread);
if(result)
return result;
if(ftpcode) {
/* we have now received a full FTP server response */
switch(ftpc->state) {
case FTP_WAIT220:
if(ftpcode == 230) {
/* 230 User logged in - already! Take as 220 if TLS required. */
if(data->set.use_ssl <= CURLUSESSL_TRY ||
conn->bits.ftp_use_control_ssl)
return ftp_state_user_resp(data, ftpcode, ftpc->state);
}
else if(ftpcode != 220) {
failf(data, "Got a %03d ftp-server response when 220 was expected",
ftpcode);
return CURLE_WEIRD_SERVER_REPLY;
}
/* We have received a 220 response fine, now we proceed. */
#ifdef HAVE_GSSAPI
if(data->set.krb) {
/* If not anonymous login, try a secure login. Note that this
procedure is still BLOCKING. */
Curl_sec_request_prot(conn, "private");
/* We set private first as default, in case the line below fails to
set a valid level */
Curl_sec_request_prot(conn, data->set.str[STRING_KRB_LEVEL]);
if(Curl_sec_login(data, conn))
infof(data, "Logging in with password in cleartext!");
else
infof(data, "Authentication successful");
}
#endif
if(data->set.use_ssl && !conn->bits.ftp_use_control_ssl) {
/* We don't have a SSL/TLS control connection yet, but FTPS is
requested. Try a FTPS connection now */
ftpc->count3 = 0;
switch(data->set.ftpsslauth) {
case CURLFTPAUTH_DEFAULT:
case CURLFTPAUTH_SSL:
ftpc->count2 = 1; /* add one to get next */
ftpc->count1 = 0;
break;
case CURLFTPAUTH_TLS:
ftpc->count2 = -1; /* subtract one to get next */
ftpc->count1 = 1;
break;
default:
failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
(int)data->set.ftpsslauth);
return CURLE_UNKNOWN_OPTION; /* we don't know what to do */
}
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
if(!result)
state(data, FTP_AUTH);
}
else
result = ftp_state_user(data, conn);
break;
case FTP_AUTH:
/* we have gotten the response to a previous AUTH command */
/* RFC2228 (page 5) says:
*
* If the server is willing to accept the named security mechanism,
* and does not require any security data, it must respond with
* reply code 234/334.
*/
if((ftpcode == 234) || (ftpcode == 334)) {
/* Curl_ssl_connect is BLOCKING */
result = Curl_ssl_connect(data, conn, FIRSTSOCKET);
if(!result) {
conn->bits.ftp_use_data_ssl = FALSE; /* clear-text data */
conn->bits.ftp_use_control_ssl = TRUE; /* SSL on control */
result = ftp_state_user(data, conn);
}
}
else if(ftpc->count3 < 1) {
ftpc->count3++;
ftpc->count1 += ftpc->count2; /* get next attempt */
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
/* remain in this same state */
}
else {
if(data->set.use_ssl > CURLUSESSL_TRY)
/* we failed and CURLUSESSL_CONTROL or CURLUSESSL_ALL is set */
result = CURLE_USE_SSL_FAILED;
else
/* ignore the failure and continue */
result = ftp_state_user(data, conn);
}
break;
case FTP_USER:
case FTP_PASS:
result = ftp_state_user_resp(data, ftpcode, ftpc->state);
break;
case FTP_ACCT:
result = ftp_state_acct_resp(data, ftpcode);
break;
case FTP_PBSZ:
result =
Curl_pp_sendf(data, &ftpc->pp, "PROT %c",
data->set.use_ssl == CURLUSESSL_CONTROL ? 'C' : 'P');
if(!result)
state(data, FTP_PROT);
break;
case FTP_PROT:
if(ftpcode/100 == 2)
/* We have enabled SSL for the data connection! */
conn->bits.ftp_use_data_ssl =
(data->set.use_ssl != CURLUSESSL_CONTROL) ? TRUE : FALSE;
/* FTP servers typically responds with 500 if they decide to reject
our 'P' request */
else if(data->set.use_ssl > CURLUSESSL_CONTROL)
/* we failed and bails out */
return CURLE_USE_SSL_FAILED;
if(data->set.ftp_ccc) {
/* CCC - Clear Command Channel
*/
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "CCC");
if(!result)
state(data, FTP_CCC);
}
else
result = ftp_state_pwd(data, conn);
break;
case FTP_CCC:
if(ftpcode < 500) {
/* First shut down the SSL layer (note: this call will block) */
result = Curl_ssl_shutdown(data, conn, FIRSTSOCKET);
if(result)
failf(data, "Failed to clear the command channel (CCC)");
}
if(!result)
/* Then continue as normal */
result = ftp_state_pwd(data, conn);
break;
case FTP_PWD:
if(ftpcode == 257) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
const size_t buf_size = data->set.buffer_size;
char *dir;
bool entry_extracted = FALSE;
dir = malloc(nread + 1);
if(!dir)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
257<space>[rubbish]"<directory-name>"<space><commentary> and the
RFC959 says
The directory name can contain any character; embedded
double-quotes should be escaped by double-quotes (the
"quote-doubling" convention).
*/
/* scan for the first double-quote for non-standard responses */
while(ptr < &data->state.buffer[buf_size]
&& *ptr != '\n' && *ptr != '\0' && *ptr != '"')
ptr++;
if('\"' == *ptr) {
/* it started good */
char *store;
ptr++;
for(store = dir; *ptr;) {
if('\"' == *ptr) {
if('\"' == ptr[1]) {
/* "quote-doubling" */
*store = ptr[1];
ptr++;
}
else {
/* end of path */
entry_extracted = TRUE;
break; /* get out of this loop */
}
}
else
*store = *ptr;
store++;
ptr++;
}
*store = '\0'; /* null-terminate */
}
if(entry_extracted) {
/* If the path name does not look like an absolute path (i.e.: it
does not start with a '/'), we probably need some server-dependent
adjustments. For example, this is the case when connecting to
an OS400 FTP server: this server supports two name syntaxes,
the default one being incompatible with standard paths. In
addition, this server switches automatically to the regular path
syntax when one is encountered in a command: this results in
having an entrypath in the wrong syntax when later used in CWD.
The method used here is to check the server OS: we do it only
if the path name looks strange to minimize overhead on other
systems. */
if(!ftpc->server_os && dir[0] != '/') {
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SYST");
if(result) {
free(dir);
return result;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
state(data, FTP_SYST);
break;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
}
else {
/* couldn't get the path */
free(dir);
infof(data, "Failed to figure out path");
}
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_SYST:
if(ftpcode == 215) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
char *os;
char *store;
os = malloc(nread + 1);
if(!os)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
215<space><OS-name><space><commentary>
*/
while(*ptr == ' ')
ptr++;
for(store = os; *ptr && *ptr != ' ';)
*store++ = *ptr++;
*store = '\0'; /* null-terminate */
/* Check for special servers here. */
if(strcasecompare(os, "OS/400")) {
/* Force OS400 name format 1. */
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SITE NAMEFMT 1");
if(result) {
free(os);
return result;
}
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
state(data, FTP_NAMEFMT);
break;
}
/* Nothing special for the target server. */
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
}
else {
/* Cannot identify server OS. Continue anyway and cross fingers. */
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_NAMEFMT:
if(ftpcode == 250) {
/* Name format change successful: reload initial path. */
ftp_state_pwd(data, conn);
break;
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_QUOTE:
case FTP_POSTQUOTE:
case FTP_RETR_PREQUOTE:
case FTP_STOR_PREQUOTE:
if((ftpcode >= 400) && !ftpc->count2) {
/* failure response code, and not allowed to fail */
failf(data, "QUOT command failed with %03d", ftpcode);
result = CURLE_QUOTE_ERROR;
}
else
result = ftp_state_quote(data, FALSE, ftpc->state);
break;
case FTP_CWD:
if(ftpcode/100 != 2) {
/* failure to CWD there */
if(data->set.ftp_create_missing_dirs &&
ftpc->cwdcount && !ftpc->count2) {
/* try making it */
ftpc->count2++; /* counter to prevent CWD-MKD loops */
result = Curl_pp_sendf(data, &ftpc->pp, "MKD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
if(!result)
state(data, FTP_MKD);
}
else {
/* return failure */
failf(data, "Server denied you to change to the given directory");
ftpc->cwdfail = TRUE; /* don't remember this path as we failed
to enter it */
result = CURLE_REMOTE_ACCESS_DENIED;
}
}
else {
/* success */
ftpc->count2 = 0;
if(++ftpc->cwdcount <= ftpc->dirdepth)
/* send next CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
else
result = ftp_state_mdtm(data);
}
break;
case FTP_MKD:
if((ftpcode/100 != 2) && !ftpc->count3--) {
/* failure to MKD the dir */
failf(data, "Failed to MKD dir: %03d", ftpcode);
result = CURLE_REMOTE_ACCESS_DENIED;
}
else {
state(data, FTP_CWD);
/* send CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
}
break;
case FTP_MDTM:
result = ftp_state_mdtm_resp(data, ftpcode);
break;
case FTP_TYPE:
case FTP_LIST_TYPE:
case FTP_RETR_TYPE:
case FTP_STOR_TYPE:
result = ftp_state_type_resp(data, ftpcode, ftpc->state);
break;
case FTP_SIZE:
case FTP_RETR_SIZE:
case FTP_STOR_SIZE:
result = ftp_state_size_resp(data, ftpcode, ftpc->state);
break;
case FTP_REST:
case FTP_RETR_REST:
result = ftp_state_rest_resp(data, conn, ftpcode, ftpc->state);
break;
case FTP_PRET:
if(ftpcode != 200) {
/* there only is this one standard OK return code. */
failf(data, "PRET command not accepted: %03d", ftpcode);
return CURLE_FTP_PRET_FAILED;
}
result = ftp_state_use_pasv(data, conn);
break;
case FTP_PASV:
result = ftp_state_pasv_resp(data, ftpcode);
break;
case FTP_PORT:
result = ftp_state_port_resp(data, ftpcode);
break;
case FTP_LIST:
case FTP_RETR:
result = ftp_state_get_resp(data, ftpcode, ftpc->state);
break;
case FTP_STOR:
result = ftp_state_stor_resp(data, ftpcode, ftpc->state);
break;
case FTP_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(data, FTP_STOP);
break;
}
} /* if(ftpcode) */
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22946/vuln.c
+446
View File
@@ -0,0 +1,446 @@
/* Provenance: curl/curl ftp_statemachine (vuln).
* repo: curl/curl
* commit: 43157490a5054bd24256fe12876931e8abc9df49
* parent: 43157490a5054bd24256fe12876931e8abc9df49
* commit_url: https://github.com/curl/curl/commit/364f174724ef115c63d5e5dc1d3342c8a43b1cca
* cve: CVE-2021-22946
* license: curl
* function: ftp_statemachine
* relpath: lib/ftp.c
*/
static CURLcode ftp_statemachine(struct Curl_easy *data,
struct connectdata *conn)
{
CURLcode result;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int ftpcode;
struct ftp_conn *ftpc = &conn->proto.ftpc;
struct pingpong *pp = &ftpc->pp;
static const char ftpauth[][4] = { "SSL", "TLS" };
size_t nread = 0;
if(pp->sendleft)
return Curl_pp_flushsend(data, pp);
result = ftp_readresp(data, sock, pp, &ftpcode, &nread);
if(result)
return result;
if(ftpcode) {
/* we have now received a full FTP server response */
switch(ftpc->state) {
case FTP_WAIT220:
if(ftpcode == 230)
/* 230 User logged in - already! */
return ftp_state_user_resp(data, ftpcode, ftpc->state);
else if(ftpcode != 220) {
failf(data, "Got a %03d ftp-server response when 220 was expected",
ftpcode);
return CURLE_WEIRD_SERVER_REPLY;
}
/* We have received a 220 response fine, now we proceed. */
#ifdef HAVE_GSSAPI
if(data->set.krb) {
/* If not anonymous login, try a secure login. Note that this
procedure is still BLOCKING. */
Curl_sec_request_prot(conn, "private");
/* We set private first as default, in case the line below fails to
set a valid level */
Curl_sec_request_prot(conn, data->set.str[STRING_KRB_LEVEL]);
if(Curl_sec_login(data, conn))
infof(data, "Logging in with password in cleartext!");
else
infof(data, "Authentication successful");
}
#endif
if(data->set.use_ssl && !conn->bits.ftp_use_control_ssl) {
/* We don't have a SSL/TLS control connection yet, but FTPS is
requested. Try a FTPS connection now */
ftpc->count3 = 0;
switch(data->set.ftpsslauth) {
case CURLFTPAUTH_DEFAULT:
case CURLFTPAUTH_SSL:
ftpc->count2 = 1; /* add one to get next */
ftpc->count1 = 0;
break;
case CURLFTPAUTH_TLS:
ftpc->count2 = -1; /* subtract one to get next */
ftpc->count1 = 1;
break;
default:
failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
(int)data->set.ftpsslauth);
return CURLE_UNKNOWN_OPTION; /* we don't know what to do */
}
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
if(!result)
state(data, FTP_AUTH);
}
else
result = ftp_state_user(data, conn);
break;
case FTP_AUTH:
/* we have gotten the response to a previous AUTH command */
/* RFC2228 (page 5) says:
*
* If the server is willing to accept the named security mechanism,
* and does not require any security data, it must respond with
* reply code 234/334.
*/
if((ftpcode == 234) || (ftpcode == 334)) {
/* Curl_ssl_connect is BLOCKING */
result = Curl_ssl_connect(data, conn, FIRSTSOCKET);
if(!result) {
conn->bits.ftp_use_data_ssl = FALSE; /* clear-text data */
conn->bits.ftp_use_control_ssl = TRUE; /* SSL on control */
result = ftp_state_user(data, conn);
}
}
else if(ftpc->count3 < 1) {
ftpc->count3++;
ftpc->count1 += ftpc->count2; /* get next attempt */
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
/* remain in this same state */
}
else {
if(data->set.use_ssl > CURLUSESSL_TRY)
/* we failed and CURLUSESSL_CONTROL or CURLUSESSL_ALL is set */
result = CURLE_USE_SSL_FAILED;
else
/* ignore the failure and continue */
result = ftp_state_user(data, conn);
}
break;
case FTP_USER:
case FTP_PASS:
result = ftp_state_user_resp(data, ftpcode, ftpc->state);
break;
case FTP_ACCT:
result = ftp_state_acct_resp(data, ftpcode);
break;
case FTP_PBSZ:
result =
Curl_pp_sendf(data, &ftpc->pp, "PROT %c",
data->set.use_ssl == CURLUSESSL_CONTROL ? 'C' : 'P');
if(!result)
state(data, FTP_PROT);
break;
case FTP_PROT:
if(ftpcode/100 == 2)
/* We have enabled SSL for the data connection! */
conn->bits.ftp_use_data_ssl =
(data->set.use_ssl != CURLUSESSL_CONTROL) ? TRUE : FALSE;
/* FTP servers typically responds with 500 if they decide to reject
our 'P' request */
else if(data->set.use_ssl > CURLUSESSL_CONTROL)
/* we failed and bails out */
return CURLE_USE_SSL_FAILED;
if(data->set.ftp_ccc) {
/* CCC - Clear Command Channel
*/
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "CCC");
if(!result)
state(data, FTP_CCC);
}
else
result = ftp_state_pwd(data, conn);
break;
case FTP_CCC:
if(ftpcode < 500) {
/* First shut down the SSL layer (note: this call will block) */
result = Curl_ssl_shutdown(data, conn, FIRSTSOCKET);
if(result)
failf(data, "Failed to clear the command channel (CCC)");
}
if(!result)
/* Then continue as normal */
result = ftp_state_pwd(data, conn);
break;
case FTP_PWD:
if(ftpcode == 257) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
const size_t buf_size = data->set.buffer_size;
char *dir;
bool entry_extracted = FALSE;
dir = malloc(nread + 1);
if(!dir)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
257<space>[rubbish]"<directory-name>"<space><commentary> and the
RFC959 says
The directory name can contain any character; embedded
double-quotes should be escaped by double-quotes (the
"quote-doubling" convention).
*/
/* scan for the first double-quote for non-standard responses */
while(ptr < &data->state.buffer[buf_size]
&& *ptr != '\n' && *ptr != '\0' && *ptr != '"')
ptr++;
if('\"' == *ptr) {
/* it started good */
char *store;
ptr++;
for(store = dir; *ptr;) {
if('\"' == *ptr) {
if('\"' == ptr[1]) {
/* "quote-doubling" */
*store = ptr[1];
ptr++;
}
else {
/* end of path */
entry_extracted = TRUE;
break; /* get out of this loop */
}
}
else
*store = *ptr;
store++;
ptr++;
}
*store = '\0'; /* null-terminate */
}
if(entry_extracted) {
/* If the path name does not look like an absolute path (i.e.: it
does not start with a '/'), we probably need some server-dependent
adjustments. For example, this is the case when connecting to
an OS400 FTP server: this server supports two name syntaxes,
the default one being incompatible with standard paths. In
addition, this server switches automatically to the regular path
syntax when one is encountered in a command: this results in
having an entrypath in the wrong syntax when later used in CWD.
The method used here is to check the server OS: we do it only
if the path name looks strange to minimize overhead on other
systems. */
if(!ftpc->server_os && dir[0] != '/') {
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SYST");
if(result) {
free(dir);
return result;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
state(data, FTP_SYST);
break;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
}
else {
/* couldn't get the path */
free(dir);
infof(data, "Failed to figure out path");
}
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_SYST:
if(ftpcode == 215) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
char *os;
char *store;
os = malloc(nread + 1);
if(!os)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
215<space><OS-name><space><commentary>
*/
while(*ptr == ' ')
ptr++;
for(store = os; *ptr && *ptr != ' ';)
*store++ = *ptr++;
*store = '\0'; /* null-terminate */
/* Check for special servers here. */
if(strcasecompare(os, "OS/400")) {
/* Force OS400 name format 1. */
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SITE NAMEFMT 1");
if(result) {
free(os);
return result;
}
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
state(data, FTP_NAMEFMT);
break;
}
/* Nothing special for the target server. */
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
}
else {
/* Cannot identify server OS. Continue anyway and cross fingers. */
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_NAMEFMT:
if(ftpcode == 250) {
/* Name format change successful: reload initial path. */
ftp_state_pwd(data, conn);
break;
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_QUOTE:
case FTP_POSTQUOTE:
case FTP_RETR_PREQUOTE:
case FTP_STOR_PREQUOTE:
if((ftpcode >= 400) && !ftpc->count2) {
/* failure response code, and not allowed to fail */
failf(data, "QUOT command failed with %03d", ftpcode);
result = CURLE_QUOTE_ERROR;
}
else
result = ftp_state_quote(data, FALSE, ftpc->state);
break;
case FTP_CWD:
if(ftpcode/100 != 2) {
/* failure to CWD there */
if(data->set.ftp_create_missing_dirs &&
ftpc->cwdcount && !ftpc->count2) {
/* try making it */
ftpc->count2++; /* counter to prevent CWD-MKD loops */
result = Curl_pp_sendf(data, &ftpc->pp, "MKD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
if(!result)
state(data, FTP_MKD);
}
else {
/* return failure */
failf(data, "Server denied you to change to the given directory");
ftpc->cwdfail = TRUE; /* don't remember this path as we failed
to enter it */
result = CURLE_REMOTE_ACCESS_DENIED;
}
}
else {
/* success */
ftpc->count2 = 0;
if(++ftpc->cwdcount <= ftpc->dirdepth)
/* send next CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
else
result = ftp_state_mdtm(data);
}
break;
case FTP_MKD:
if((ftpcode/100 != 2) && !ftpc->count3--) {
/* failure to MKD the dir */
failf(data, "Failed to MKD dir: %03d", ftpcode);
result = CURLE_REMOTE_ACCESS_DENIED;
}
else {
state(data, FTP_CWD);
/* send CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
}
break;
case FTP_MDTM:
result = ftp_state_mdtm_resp(data, ftpcode);
break;
case FTP_TYPE:
case FTP_LIST_TYPE:
case FTP_RETR_TYPE:
case FTP_STOR_TYPE:
result = ftp_state_type_resp(data, ftpcode, ftpc->state);
break;
case FTP_SIZE:
case FTP_RETR_SIZE:
case FTP_STOR_SIZE:
result = ftp_state_size_resp(data, ftpcode, ftpc->state);
break;
case FTP_REST:
case FTP_RETR_REST:
result = ftp_state_rest_resp(data, conn, ftpcode, ftpc->state);
break;
case FTP_PRET:
if(ftpcode != 200) {
/* there only is this one standard OK return code. */
failf(data, "PRET command not accepted: %03d", ftpcode);
return CURLE_FTP_PRET_FAILED;
}
result = ftp_state_use_pasv(data, conn);
break;
case FTP_PASV:
result = ftp_state_pasv_resp(data, ftpcode);
break;
case FTP_PORT:
result = ftp_state_port_resp(data, ftpcode);
break;
case FTP_LIST:
case FTP_RETR:
result = ftp_state_get_resp(data, ftpcode, ftpc->state);
break;
case FTP_STOR:
result = ftp_state_stor_resp(data, ftpcode, ftpc->state);
break;
case FTP_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(data, FTP_STOP);
break;
}
} /* if(ftpcode) */
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947-imap_state_starttls_resp/fixed.c
+37
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/* Provenance: curl/curl imap_state_starttls_resp (fixed).
* repo: curl/curl
* commit: 8ef147c43646e91fdaad5d0e7b60351f842e5c68
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: imap_state_starttls_resp
* relpath: lib/imap.c
*/
static CURLcode imap_state_starttls_resp(struct Curl_easy *data,
int imapcode,
imapstate instate)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
(void)instate; /* no use for this yet */
/* Pipelining in response is forbidden. */
if(data->conn->proto.imapc.pp.cache_size)
return CURLE_WEIRD_SERVER_REPLY;
if(imapcode != IMAP_RESP_OK) {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied");
result = CURLE_USE_SSL_FAILED;
}
else
result = imap_perform_authentication(data, conn);
}
else
result = imap_perform_upgrade_tls(data, conn);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947-imap_state_starttls_resp/vuln.c
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/* Provenance: curl/curl imap_state_starttls_resp (vuln).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: imap_state_starttls_resp
* relpath: lib/imap.c
*/
static CURLcode imap_state_starttls_resp(struct Curl_easy *data,
int imapcode,
imapstate instate)
{
CURLcode result = CURLE_OK;
struct connectdata *conn = data->conn;
(void)instate; /* no use for this yet */
if(imapcode != IMAP_RESP_OK) {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied");
result = CURLE_USE_SSL_FAILED;
}
else
result = imap_perform_authentication(data, conn);
}
else
result = imap_perform_upgrade_tls(data, conn);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947-pop3_state_starttls_resp/fixed.c
+36
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/* Provenance: curl/curl pop3_state_starttls_resp (fixed).
* repo: curl/curl
* commit: 8ef147c43646e91fdaad5d0e7b60351f842e5c68
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: pop3_state_starttls_resp
* relpath: lib/pop3.c
*/
static CURLcode pop3_state_starttls_resp(struct Curl_easy *data,
struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
(void)instate; /* no use for this yet */
/* Pipelining in response is forbidden. */
if(data->conn->proto.pop3c.pp.cache_size)
return CURLE_WEIRD_SERVER_REPLY;
if(pop3code != '+') {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied");
result = CURLE_USE_SSL_FAILED;
}
else
result = pop3_perform_authentication(data, conn);
}
else
result = pop3_perform_upgrade_tls(data, conn);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947-pop3_state_starttls_resp/vuln.c
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/* Provenance: curl/curl pop3_state_starttls_resp (vuln).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: pop3_state_starttls_resp
* relpath: lib/pop3.c
*/
static CURLcode pop3_state_starttls_resp(struct Curl_easy *data,
struct connectdata *conn,
int pop3code,
pop3state instate)
{
CURLcode result = CURLE_OK;
(void)instate; /* no use for this yet */
if(pop3code != '+') {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied");
result = CURLE_USE_SSL_FAILED;
}
else
result = pop3_perform_authentication(data, conn);
}
else
result = pop3_perform_upgrade_tls(data, conn);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947-smtp_state_starttls_resp/fixed.c
+35
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/* Provenance: curl/curl smtp_state_starttls_resp (fixed).
* repo: curl/curl
* commit: 8ef147c43646e91fdaad5d0e7b60351f842e5c68
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: smtp_state_starttls_resp
* relpath: lib/smtp.c
*/
static CURLcode smtp_state_starttls_resp(struct Curl_easy *data,
int smtpcode,
smtpstate instate)
{
CURLcode result = CURLE_OK;
(void)instate; /* no use for this yet */
/* Pipelining in response is forbidden. */
if(data->conn->proto.smtpc.pp.cache_size)
return CURLE_WEIRD_SERVER_REPLY;
if(smtpcode != 220) {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied, code %d", smtpcode);
result = CURLE_USE_SSL_FAILED;
}
else
result = smtp_perform_authentication(data);
}
else
result = smtp_perform_upgrade_tls(data);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947-smtp_state_starttls_resp/vuln.c
+31
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/* Provenance: curl/curl smtp_state_starttls_resp (vuln).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: smtp_state_starttls_resp
* relpath: lib/smtp.c
*/
static CURLcode smtp_state_starttls_resp(struct Curl_easy *data,
int smtpcode,
smtpstate instate)
{
CURLcode result = CURLE_OK;
(void)instate; /* no use for this yet */
if(smtpcode != 220) {
if(data->set.use_ssl != CURLUSESSL_TRY) {
failf(data, "STARTTLS denied, code %d", smtpcode);
result = CURLE_USE_SSL_FAILED;
}
else
result = smtp_perform_authentication(data);
}
else
result = smtp_perform_upgrade_tls(data);
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947/fixed.c
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/* Provenance: curl/curl ftp_statemachine (fixed).
* repo: curl/curl
* commit: 8ef147c43646e91fdaad5d0e7b60351f842e5c68
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: ftp_statemachine
* relpath: lib/ftp.c
*/
static CURLcode ftp_statemachine(struct Curl_easy *data,
struct connectdata *conn)
{
CURLcode result;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int ftpcode;
struct ftp_conn *ftpc = &conn->proto.ftpc;
struct pingpong *pp = &ftpc->pp;
static const char ftpauth[][4] = { "SSL", "TLS" };
size_t nread = 0;
if(pp->sendleft)
return Curl_pp_flushsend(data, pp);
result = ftp_readresp(data, sock, pp, &ftpcode, &nread);
if(result)
return result;
if(ftpcode) {
/* we have now received a full FTP server response */
switch(ftpc->state) {
case FTP_WAIT220:
if(ftpcode == 230) {
/* 230 User logged in - already! Take as 220 if TLS required. */
if(data->set.use_ssl <= CURLUSESSL_TRY ||
conn->bits.ftp_use_control_ssl)
return ftp_state_user_resp(data, ftpcode, ftpc->state);
}
else if(ftpcode != 220) {
failf(data, "Got a %03d ftp-server response when 220 was expected",
ftpcode);
return CURLE_WEIRD_SERVER_REPLY;
}
/* We have received a 220 response fine, now we proceed. */
#ifdef HAVE_GSSAPI
if(data->set.krb) {
/* If not anonymous login, try a secure login. Note that this
procedure is still BLOCKING. */
Curl_sec_request_prot(conn, "private");
/* We set private first as default, in case the line below fails to
set a valid level */
Curl_sec_request_prot(conn, data->set.str[STRING_KRB_LEVEL]);
if(Curl_sec_login(data, conn))
infof(data, "Logging in with password in cleartext!");
else
infof(data, "Authentication successful");
}
#endif
if(data->set.use_ssl && !conn->bits.ftp_use_control_ssl) {
/* We don't have a SSL/TLS control connection yet, but FTPS is
requested. Try a FTPS connection now */
ftpc->count3 = 0;
switch(data->set.ftpsslauth) {
case CURLFTPAUTH_DEFAULT:
case CURLFTPAUTH_SSL:
ftpc->count2 = 1; /* add one to get next */
ftpc->count1 = 0;
break;
case CURLFTPAUTH_TLS:
ftpc->count2 = -1; /* subtract one to get next */
ftpc->count1 = 1;
break;
default:
failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
(int)data->set.ftpsslauth);
return CURLE_UNKNOWN_OPTION; /* we don't know what to do */
}
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
if(!result)
state(data, FTP_AUTH);
}
else
result = ftp_state_user(data, conn);
break;
case FTP_AUTH:
/* we have gotten the response to a previous AUTH command */
if(pp->cache_size)
return CURLE_WEIRD_SERVER_REPLY; /* Forbid pipelining in response. */
/* RFC2228 (page 5) says:
*
* If the server is willing to accept the named security mechanism,
* and does not require any security data, it must respond with
* reply code 234/334.
*/
if((ftpcode == 234) || (ftpcode == 334)) {
/* Curl_ssl_connect is BLOCKING */
result = Curl_ssl_connect(data, conn, FIRSTSOCKET);
if(!result) {
conn->bits.ftp_use_data_ssl = FALSE; /* clear-text data */
conn->bits.ftp_use_control_ssl = TRUE; /* SSL on control */
result = ftp_state_user(data, conn);
}
}
else if(ftpc->count3 < 1) {
ftpc->count3++;
ftpc->count1 += ftpc->count2; /* get next attempt */
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
/* remain in this same state */
}
else {
if(data->set.use_ssl > CURLUSESSL_TRY)
/* we failed and CURLUSESSL_CONTROL or CURLUSESSL_ALL is set */
result = CURLE_USE_SSL_FAILED;
else
/* ignore the failure and continue */
result = ftp_state_user(data, conn);
}
break;
case FTP_USER:
case FTP_PASS:
result = ftp_state_user_resp(data, ftpcode, ftpc->state);
break;
case FTP_ACCT:
result = ftp_state_acct_resp(data, ftpcode);
break;
case FTP_PBSZ:
result =
Curl_pp_sendf(data, &ftpc->pp, "PROT %c",
data->set.use_ssl == CURLUSESSL_CONTROL ? 'C' : 'P');
if(!result)
state(data, FTP_PROT);
break;
case FTP_PROT:
if(ftpcode/100 == 2)
/* We have enabled SSL for the data connection! */
conn->bits.ftp_use_data_ssl =
(data->set.use_ssl != CURLUSESSL_CONTROL) ? TRUE : FALSE;
/* FTP servers typically responds with 500 if they decide to reject
our 'P' request */
else if(data->set.use_ssl > CURLUSESSL_CONTROL)
/* we failed and bails out */
return CURLE_USE_SSL_FAILED;
if(data->set.ftp_ccc) {
/* CCC - Clear Command Channel
*/
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "CCC");
if(!result)
state(data, FTP_CCC);
}
else
result = ftp_state_pwd(data, conn);
break;
case FTP_CCC:
if(ftpcode < 500) {
/* First shut down the SSL layer (note: this call will block) */
result = Curl_ssl_shutdown(data, conn, FIRSTSOCKET);
if(result)
failf(data, "Failed to clear the command channel (CCC)");
}
if(!result)
/* Then continue as normal */
result = ftp_state_pwd(data, conn);
break;
case FTP_PWD:
if(ftpcode == 257) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
const size_t buf_size = data->set.buffer_size;
char *dir;
bool entry_extracted = FALSE;
dir = malloc(nread + 1);
if(!dir)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
257<space>[rubbish]"<directory-name>"<space><commentary> and the
RFC959 says
The directory name can contain any character; embedded
double-quotes should be escaped by double-quotes (the
"quote-doubling" convention).
*/
/* scan for the first double-quote for non-standard responses */
while(ptr < &data->state.buffer[buf_size]
&& *ptr != '\n' && *ptr != '\0' && *ptr != '"')
ptr++;
if('\"' == *ptr) {
/* it started good */
char *store;
ptr++;
for(store = dir; *ptr;) {
if('\"' == *ptr) {
if('\"' == ptr[1]) {
/* "quote-doubling" */
*store = ptr[1];
ptr++;
}
else {
/* end of path */
entry_extracted = TRUE;
break; /* get out of this loop */
}
}
else
*store = *ptr;
store++;
ptr++;
}
*store = '\0'; /* null-terminate */
}
if(entry_extracted) {
/* If the path name does not look like an absolute path (i.e.: it
does not start with a '/'), we probably need some server-dependent
adjustments. For example, this is the case when connecting to
an OS400 FTP server: this server supports two name syntaxes,
the default one being incompatible with standard paths. In
addition, this server switches automatically to the regular path
syntax when one is encountered in a command: this results in
having an entrypath in the wrong syntax when later used in CWD.
The method used here is to check the server OS: we do it only
if the path name looks strange to minimize overhead on other
systems. */
if(!ftpc->server_os && dir[0] != '/') {
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SYST");
if(result) {
free(dir);
return result;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
state(data, FTP_SYST);
break;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
}
else {
/* couldn't get the path */
free(dir);
infof(data, "Failed to figure out path");
}
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_SYST:
if(ftpcode == 215) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
char *os;
char *store;
os = malloc(nread + 1);
if(!os)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
215<space><OS-name><space><commentary>
*/
while(*ptr == ' ')
ptr++;
for(store = os; *ptr && *ptr != ' ';)
*store++ = *ptr++;
*store = '\0'; /* null-terminate */
/* Check for special servers here. */
if(strcasecompare(os, "OS/400")) {
/* Force OS400 name format 1. */
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SITE NAMEFMT 1");
if(result) {
free(os);
return result;
}
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
state(data, FTP_NAMEFMT);
break;
}
/* Nothing special for the target server. */
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
}
else {
/* Cannot identify server OS. Continue anyway and cross fingers. */
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_NAMEFMT:
if(ftpcode == 250) {
/* Name format change successful: reload initial path. */
ftp_state_pwd(data, conn);
break;
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_QUOTE:
case FTP_POSTQUOTE:
case FTP_RETR_PREQUOTE:
case FTP_STOR_PREQUOTE:
if((ftpcode >= 400) && !ftpc->count2) {
/* failure response code, and not allowed to fail */
failf(data, "QUOT command failed with %03d", ftpcode);
result = CURLE_QUOTE_ERROR;
}
else
result = ftp_state_quote(data, FALSE, ftpc->state);
break;
case FTP_CWD:
if(ftpcode/100 != 2) {
/* failure to CWD there */
if(data->set.ftp_create_missing_dirs &&
ftpc->cwdcount && !ftpc->count2) {
/* try making it */
ftpc->count2++; /* counter to prevent CWD-MKD loops */
result = Curl_pp_sendf(data, &ftpc->pp, "MKD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
if(!result)
state(data, FTP_MKD);
}
else {
/* return failure */
failf(data, "Server denied you to change to the given directory");
ftpc->cwdfail = TRUE; /* don't remember this path as we failed
to enter it */
result = CURLE_REMOTE_ACCESS_DENIED;
}
}
else {
/* success */
ftpc->count2 = 0;
if(++ftpc->cwdcount <= ftpc->dirdepth)
/* send next CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
else
result = ftp_state_mdtm(data);
}
break;
case FTP_MKD:
if((ftpcode/100 != 2) && !ftpc->count3--) {
/* failure to MKD the dir */
failf(data, "Failed to MKD dir: %03d", ftpcode);
result = CURLE_REMOTE_ACCESS_DENIED;
}
else {
state(data, FTP_CWD);
/* send CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
}
break;
case FTP_MDTM:
result = ftp_state_mdtm_resp(data, ftpcode);
break;
case FTP_TYPE:
case FTP_LIST_TYPE:
case FTP_RETR_TYPE:
case FTP_STOR_TYPE:
result = ftp_state_type_resp(data, ftpcode, ftpc->state);
break;
case FTP_SIZE:
case FTP_RETR_SIZE:
case FTP_STOR_SIZE:
result = ftp_state_size_resp(data, ftpcode, ftpc->state);
break;
case FTP_REST:
case FTP_RETR_REST:
result = ftp_state_rest_resp(data, conn, ftpcode, ftpc->state);
break;
case FTP_PRET:
if(ftpcode != 200) {
/* there only is this one standard OK return code. */
failf(data, "PRET command not accepted: %03d", ftpcode);
return CURLE_FTP_PRET_FAILED;
}
result = ftp_state_use_pasv(data, conn);
break;
case FTP_PASV:
result = ftp_state_pasv_resp(data, ftpcode);
break;
case FTP_PORT:
result = ftp_state_port_resp(data, ftpcode);
break;
case FTP_LIST:
case FTP_RETR:
result = ftp_state_get_resp(data, ftpcode, ftpc->state);
break;
case FTP_STOR:
result = ftp_state_stor_resp(data, ftpcode, ftpc->state);
break;
case FTP_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(data, FTP_STOP);
break;
}
} /* if(ftpcode) */
return result;
}
benchmarks/pairs/vfc/curl-cve-2021-22947/vuln.c
+449
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@@ -0,0 +1,449 @@
/* Provenance: curl/curl ftp_statemachine (vuln).
* repo: curl/curl
* commit: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* parent: 364f174724ef115c63d5e5dc1d3342c8a43b1cca
* commit_url: https://github.com/curl/curl/commit/8ef147c43646e91fdaad5d0e7b60351f842e5c68
* cve: CVE-2021-22947
* license: curl
* function: ftp_statemachine
* relpath: lib/ftp.c
*/
static CURLcode ftp_statemachine(struct Curl_easy *data,
struct connectdata *conn)
{
CURLcode result;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
int ftpcode;
struct ftp_conn *ftpc = &conn->proto.ftpc;
struct pingpong *pp = &ftpc->pp;
static const char ftpauth[][4] = { "SSL", "TLS" };
size_t nread = 0;
if(pp->sendleft)
return Curl_pp_flushsend(data, pp);
result = ftp_readresp(data, sock, pp, &ftpcode, &nread);
if(result)
return result;
if(ftpcode) {
/* we have now received a full FTP server response */
switch(ftpc->state) {
case FTP_WAIT220:
if(ftpcode == 230) {
/* 230 User logged in - already! Take as 220 if TLS required. */
if(data->set.use_ssl <= CURLUSESSL_TRY ||
conn->bits.ftp_use_control_ssl)
return ftp_state_user_resp(data, ftpcode, ftpc->state);
}
else if(ftpcode != 220) {
failf(data, "Got a %03d ftp-server response when 220 was expected",
ftpcode);
return CURLE_WEIRD_SERVER_REPLY;
}
/* We have received a 220 response fine, now we proceed. */
#ifdef HAVE_GSSAPI
if(data->set.krb) {
/* If not anonymous login, try a secure login. Note that this
procedure is still BLOCKING. */
Curl_sec_request_prot(conn, "private");
/* We set private first as default, in case the line below fails to
set a valid level */
Curl_sec_request_prot(conn, data->set.str[STRING_KRB_LEVEL]);
if(Curl_sec_login(data, conn))
infof(data, "Logging in with password in cleartext!");
else
infof(data, "Authentication successful");
}
#endif
if(data->set.use_ssl && !conn->bits.ftp_use_control_ssl) {
/* We don't have a SSL/TLS control connection yet, but FTPS is
requested. Try a FTPS connection now */
ftpc->count3 = 0;
switch(data->set.ftpsslauth) {
case CURLFTPAUTH_DEFAULT:
case CURLFTPAUTH_SSL:
ftpc->count2 = 1; /* add one to get next */
ftpc->count1 = 0;
break;
case CURLFTPAUTH_TLS:
ftpc->count2 = -1; /* subtract one to get next */
ftpc->count1 = 1;
break;
default:
failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
(int)data->set.ftpsslauth);
return CURLE_UNKNOWN_OPTION; /* we don't know what to do */
}
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
if(!result)
state(data, FTP_AUTH);
}
else
result = ftp_state_user(data, conn);
break;
case FTP_AUTH:
/* we have gotten the response to a previous AUTH command */
/* RFC2228 (page 5) says:
*
* If the server is willing to accept the named security mechanism,
* and does not require any security data, it must respond with
* reply code 234/334.
*/
if((ftpcode == 234) || (ftpcode == 334)) {
/* Curl_ssl_connect is BLOCKING */
result = Curl_ssl_connect(data, conn, FIRSTSOCKET);
if(!result) {
conn->bits.ftp_use_data_ssl = FALSE; /* clear-text data */
conn->bits.ftp_use_control_ssl = TRUE; /* SSL on control */
result = ftp_state_user(data, conn);
}
}
else if(ftpc->count3 < 1) {
ftpc->count3++;
ftpc->count1 += ftpc->count2; /* get next attempt */
result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
ftpauth[ftpc->count1]);
/* remain in this same state */
}
else {
if(data->set.use_ssl > CURLUSESSL_TRY)
/* we failed and CURLUSESSL_CONTROL or CURLUSESSL_ALL is set */
result = CURLE_USE_SSL_FAILED;
else
/* ignore the failure and continue */
result = ftp_state_user(data, conn);
}
break;
case FTP_USER:
case FTP_PASS:
result = ftp_state_user_resp(data, ftpcode, ftpc->state);
break;
case FTP_ACCT:
result = ftp_state_acct_resp(data, ftpcode);
break;
case FTP_PBSZ:
result =
Curl_pp_sendf(data, &ftpc->pp, "PROT %c",
data->set.use_ssl == CURLUSESSL_CONTROL ? 'C' : 'P');
if(!result)
state(data, FTP_PROT);
break;
case FTP_PROT:
if(ftpcode/100 == 2)
/* We have enabled SSL for the data connection! */
conn->bits.ftp_use_data_ssl =
(data->set.use_ssl != CURLUSESSL_CONTROL) ? TRUE : FALSE;
/* FTP servers typically responds with 500 if they decide to reject
our 'P' request */
else if(data->set.use_ssl > CURLUSESSL_CONTROL)
/* we failed and bails out */
return CURLE_USE_SSL_FAILED;
if(data->set.ftp_ccc) {
/* CCC - Clear Command Channel
*/
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "CCC");
if(!result)
state(data, FTP_CCC);
}
else
result = ftp_state_pwd(data, conn);
break;
case FTP_CCC:
if(ftpcode < 500) {
/* First shut down the SSL layer (note: this call will block) */
result = Curl_ssl_shutdown(data, conn, FIRSTSOCKET);
if(result)
failf(data, "Failed to clear the command channel (CCC)");
}
if(!result)
/* Then continue as normal */
result = ftp_state_pwd(data, conn);
break;
case FTP_PWD:
if(ftpcode == 257) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
const size_t buf_size = data->set.buffer_size;
char *dir;
bool entry_extracted = FALSE;
dir = malloc(nread + 1);
if(!dir)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
257<space>[rubbish]"<directory-name>"<space><commentary> and the
RFC959 says
The directory name can contain any character; embedded
double-quotes should be escaped by double-quotes (the
"quote-doubling" convention).
*/
/* scan for the first double-quote for non-standard responses */
while(ptr < &data->state.buffer[buf_size]
&& *ptr != '\n' && *ptr != '\0' && *ptr != '"')
ptr++;
if('\"' == *ptr) {
/* it started good */
char *store;
ptr++;
for(store = dir; *ptr;) {
if('\"' == *ptr) {
if('\"' == ptr[1]) {
/* "quote-doubling" */
*store = ptr[1];
ptr++;
}
else {
/* end of path */
entry_extracted = TRUE;
break; /* get out of this loop */
}
}
else
*store = *ptr;
store++;
ptr++;
}
*store = '\0'; /* null-terminate */
}
if(entry_extracted) {
/* If the path name does not look like an absolute path (i.e.: it
does not start with a '/'), we probably need some server-dependent
adjustments. For example, this is the case when connecting to
an OS400 FTP server: this server supports two name syntaxes,
the default one being incompatible with standard paths. In
addition, this server switches automatically to the regular path
syntax when one is encountered in a command: this results in
having an entrypath in the wrong syntax when later used in CWD.
The method used here is to check the server OS: we do it only
if the path name looks strange to minimize overhead on other
systems. */
if(!ftpc->server_os && dir[0] != '/') {
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SYST");
if(result) {
free(dir);
return result;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
state(data, FTP_SYST);
break;
}
Curl_safefree(ftpc->entrypath);
ftpc->entrypath = dir; /* remember this */
infof(data, "Entry path is '%s'", ftpc->entrypath);
/* also save it where getinfo can access it: */
data->state.most_recent_ftp_entrypath = ftpc->entrypath;
}
else {
/* couldn't get the path */
free(dir);
infof(data, "Failed to figure out path");
}
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_SYST:
if(ftpcode == 215) {
char *ptr = &data->state.buffer[4]; /* start on the first letter */
char *os;
char *store;
os = malloc(nread + 1);
if(!os)
return CURLE_OUT_OF_MEMORY;
/* Reply format is like
215<space><OS-name><space><commentary>
*/
while(*ptr == ' ')
ptr++;
for(store = os; *ptr && *ptr != ' ';)
*store++ = *ptr++;
*store = '\0'; /* null-terminate */
/* Check for special servers here. */
if(strcasecompare(os, "OS/400")) {
/* Force OS400 name format 1. */
result = Curl_pp_sendf(data, &ftpc->pp, "%s", "SITE NAMEFMT 1");
if(result) {
free(os);
return result;
}
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
state(data, FTP_NAMEFMT);
break;
}
/* Nothing special for the target server. */
/* remember target server OS */
Curl_safefree(ftpc->server_os);
ftpc->server_os = os;
}
else {
/* Cannot identify server OS. Continue anyway and cross fingers. */
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_NAMEFMT:
if(ftpcode == 250) {
/* Name format change successful: reload initial path. */
ftp_state_pwd(data, conn);
break;
}
state(data, FTP_STOP); /* we are done with the CONNECT phase! */
DEBUGF(infof(data, "protocol connect phase DONE"));
break;
case FTP_QUOTE:
case FTP_POSTQUOTE:
case FTP_RETR_PREQUOTE:
case FTP_STOR_PREQUOTE:
if((ftpcode >= 400) && !ftpc->count2) {
/* failure response code, and not allowed to fail */
failf(data, "QUOT command failed with %03d", ftpcode);
result = CURLE_QUOTE_ERROR;
}
else
result = ftp_state_quote(data, FALSE, ftpc->state);
break;
case FTP_CWD:
if(ftpcode/100 != 2) {
/* failure to CWD there */
if(data->set.ftp_create_missing_dirs &&
ftpc->cwdcount && !ftpc->count2) {
/* try making it */
ftpc->count2++; /* counter to prevent CWD-MKD loops */
result = Curl_pp_sendf(data, &ftpc->pp, "MKD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
if(!result)
state(data, FTP_MKD);
}
else {
/* return failure */
failf(data, "Server denied you to change to the given directory");
ftpc->cwdfail = TRUE; /* don't remember this path as we failed
to enter it */
result = CURLE_REMOTE_ACCESS_DENIED;
}
}
else {
/* success */
ftpc->count2 = 0;
if(++ftpc->cwdcount <= ftpc->dirdepth)
/* send next CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
else
result = ftp_state_mdtm(data);
}
break;
case FTP_MKD:
if((ftpcode/100 != 2) && !ftpc->count3--) {
/* failure to MKD the dir */
failf(data, "Failed to MKD dir: %03d", ftpcode);
result = CURLE_REMOTE_ACCESS_DENIED;
}
else {
state(data, FTP_CWD);
/* send CWD */
result = Curl_pp_sendf(data, &ftpc->pp, "CWD %s",
ftpc->dirs[ftpc->cwdcount - 1]);
}
break;
case FTP_MDTM:
result = ftp_state_mdtm_resp(data, ftpcode);
break;
case FTP_TYPE:
case FTP_LIST_TYPE:
case FTP_RETR_TYPE:
case FTP_STOR_TYPE:
result = ftp_state_type_resp(data, ftpcode, ftpc->state);
break;
case FTP_SIZE:
case FTP_RETR_SIZE:
case FTP_STOR_SIZE:
result = ftp_state_size_resp(data, ftpcode, ftpc->state);
break;
case FTP_REST:
case FTP_RETR_REST:
result = ftp_state_rest_resp(data, conn, ftpcode, ftpc->state);
break;
case FTP_PRET:
if(ftpcode != 200) {
/* there only is this one standard OK return code. */
failf(data, "PRET command not accepted: %03d", ftpcode);
return CURLE_FTP_PRET_FAILED;
}
result = ftp_state_use_pasv(data, conn);
break;
case FTP_PASV:
result = ftp_state_pasv_resp(data, ftpcode);
break;
case FTP_PORT:
result = ftp_state_port_resp(data, ftpcode);
break;
case FTP_LIST:
case FTP_RETR:
result = ftp_state_get_resp(data, ftpcode, ftpc->state);
break;
case FTP_STOR:
result = ftp_state_stor_resp(data, ftpcode, ftpc->state);
break;
case FTP_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(data, FTP_STOP);
break;
}
} /* if(ftpcode) */
return result;
}
benchmarks/pairs/vfc/curl-cve-2022-22576-conn_free/fixed.c
+54
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@@ -0,0 +1,54 @@
/* Provenance: curl/curl conn_free (fixed).
* repo: curl/curl
* commit: 852aa5ad351ea53e5f01d2f44b5b4370c2bf5425
* parent: ff2f3e836702daa82e2356195482fcc95f4257dc
* commit_url: https://github.com/curl/curl/commit/852aa5ad351ea53e5f01d2f44b5b4370c2bf5425
* cve: CVE-2022-22576
* license: curl
* function: conn_free
* relpath: lib/url.c
*/
static void conn_free(struct connectdata *conn)
{
DEBUGASSERT(conn);
Curl_free_idnconverted_hostname(&conn->host);
Curl_free_idnconverted_hostname(&conn->conn_to_host);
#ifndef CURL_DISABLE_PROXY
Curl_free_idnconverted_hostname(&conn->http_proxy.host);
Curl_free_idnconverted_hostname(&conn->socks_proxy.host);
Curl_safefree(conn->http_proxy.user);
Curl_safefree(conn->socks_proxy.user);
Curl_safefree(conn->http_proxy.passwd);
Curl_safefree(conn->socks_proxy.passwd);
Curl_safefree(conn->http_proxy.host.rawalloc); /* http proxy name buffer */
Curl_safefree(conn->socks_proxy.host.rawalloc); /* socks proxy name buffer */
Curl_free_primary_ssl_config(&conn->proxy_ssl_config);
#endif
Curl_safefree(conn->user);
Curl_safefree(conn->passwd);
Curl_safefree(conn->sasl_authzid);
Curl_safefree(conn->options);
Curl_safefree(conn->oauth_bearer);
Curl_dyn_free(&conn->trailer);
Curl_safefree(conn->host.rawalloc); /* host name buffer */
Curl_safefree(conn->conn_to_host.rawalloc); /* host name buffer */
Curl_safefree(conn->hostname_resolve);
Curl_safefree(conn->secondaryhostname);
Curl_safefree(conn->connect_state);
conn_reset_all_postponed_data(conn);
Curl_llist_destroy(&conn->easyq, NULL);
Curl_safefree(conn->localdev);
Curl_free_primary_ssl_config(&conn->ssl_config);
#ifdef USE_UNIX_SOCKETS
Curl_safefree(conn->unix_domain_socket);
#endif
#ifdef USE_SSL
Curl_safefree(conn->ssl_extra);
#endif
free(conn); /* free all the connection oriented data */
}
benchmarks/pairs/vfc/curl-cve-2022-22576-conn_free/vuln.c
+53
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@@ -0,0 +1,53 @@
/* Provenance: curl/curl conn_free (vuln).
* repo: curl/curl
* commit: ff2f3e836702daa82e2356195482fcc95f4257dc
* parent: ff2f3e836702daa82e2356195482fcc95f4257dc
* commit_url: https://github.com/curl/curl/commit/852aa5ad351ea53e5f01d2f44b5b4370c2bf5425
* cve: CVE-2022-22576
* license: curl
* function: conn_free
* relpath: lib/url.c
*/
static void conn_free(struct connectdata *conn)
{
DEBUGASSERT(conn);
Curl_free_idnconverted_hostname(&conn->host);
Curl_free_idnconverted_hostname(&conn->conn_to_host);
#ifndef CURL_DISABLE_PROXY
Curl_free_idnconverted_hostname(&conn->http_proxy.host);
Curl_free_idnconverted_hostname(&conn->socks_proxy.host);
Curl_safefree(conn->http_proxy.user);
Curl_safefree(conn->socks_proxy.user);
Curl_safefree(conn->http_proxy.passwd);
Curl_safefree(conn->socks_proxy.passwd);
Curl_safefree(conn->http_proxy.host.rawalloc); /* http proxy name buffer */
Curl_safefree(conn->socks_proxy.host.rawalloc); /* socks proxy name buffer */
Curl_free_primary_ssl_config(&conn->proxy_ssl_config);
#endif
Curl_safefree(conn->user);
Curl_safefree(conn->passwd);
Curl_safefree(conn->sasl_authzid);
Curl_safefree(conn->options);
Curl_dyn_free(&conn->trailer);
Curl_safefree(conn->host.rawalloc); /* host name buffer */
Curl_safefree(conn->conn_to_host.rawalloc); /* host name buffer */
Curl_safefree(conn->hostname_resolve);
Curl_safefree(conn->secondaryhostname);
Curl_safefree(conn->connect_state);
conn_reset_all_postponed_data(conn);
Curl_llist_destroy(&conn->easyq, NULL);
Curl_safefree(conn->localdev);
Curl_free_primary_ssl_config(&conn->ssl_config);
#ifdef USE_UNIX_SOCKETS
Curl_safefree(conn->unix_domain_socket);
#endif
#ifdef USE_SSL
Curl_safefree(conn->ssl_extra);
#endif
free(conn); /* free all the connection oriented data */
}
benchmarks/pairs/vfc/curl-cve-2022-27774/fixed.c
+297
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@@ -0,0 +1,297 @@
/* Provenance: curl/curl Curl_follow (fixed).
* repo: curl/curl
* commit: 620ea21410030a9977396b4661806bc187231b79
* parent: 08b8ef4e726ba10f45081ecda5b3cea788d3c839
* commit_url: https://github.com/curl/curl/commit/620ea21410030a9977396b4661806bc187231b79
* cve: CVE-2022-27774
* license: curl
* function: Curl_follow
* relpath: lib/transfer.c
*/
* Curl_follow() handles the URL redirect magic. Pass in the 'newurl' string
* as given by the remote server and set up the new URL to request.
*
* This function DOES NOT FREE the given url.
*/
CURLcode Curl_follow(struct Curl_easy *data,
char *newurl, /* the Location: string */
followtype type) /* see transfer.h */
{
#ifdef CURL_DISABLE_HTTP
(void)data;
(void)newurl;
(void)type;
/* Location: following will not happen when HTTP is disabled */
return CURLE_TOO_MANY_REDIRECTS;
#else
/* Location: redirect */
bool disallowport = FALSE;
bool reachedmax = FALSE;
CURLUcode uc;
DEBUGASSERT(type != FOLLOW_NONE);
if(type != FOLLOW_FAKE)
data->state.requests++; /* count all real follows */
if(type == FOLLOW_REDIR) {
if((data->set.maxredirs != -1) &&
(data->state.followlocation >= data->set.maxredirs)) {
reachedmax = TRUE;
type = FOLLOW_FAKE; /* switch to fake to store the would-be-redirected
to URL */
}
else {
/* mark the next request as a followed location: */
data->state.this_is_a_follow = TRUE;
data->state.followlocation++; /* count location-followers */
if(data->set.http_auto_referer) {
CURLU *u;
char *referer = NULL;
/* We are asked to automatically set the previous URL as the referer
when we get the next URL. We pick the ->url field, which may or may
not be 100% correct */
if(data->state.referer_alloc) {
Curl_safefree(data->state.referer);
data->state.referer_alloc = FALSE;
}
/* Make a copy of the URL without crenditals and fragment */
u = curl_url();
if(!u)
return CURLE_OUT_OF_MEMORY;
uc = curl_url_set(u, CURLUPART_URL, data->state.url, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_FRAGMENT, NULL, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_USER, NULL, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_PASSWORD, NULL, 0);
if(!uc)
uc = curl_url_get(u, CURLUPART_URL, &referer, 0);
curl_url_cleanup(u);
if(uc || !referer)
return CURLE_OUT_OF_MEMORY;
data->state.referer = referer;
data->state.referer_alloc = TRUE; /* yes, free this later */
}
}
}
if((type != FOLLOW_RETRY) &&
(data->req.httpcode != 401) && (data->req.httpcode != 407) &&
Curl_is_absolute_url(newurl, NULL, 0))
/* If this is not redirect due to a 401 or 407 response and an absolute
URL: don't allow a custom port number */
disallowport = TRUE;
DEBUGASSERT(data->state.uh);
uc = curl_url_set(data->state.uh, CURLUPART_URL, newurl,
(type == FOLLOW_FAKE) ? CURLU_NON_SUPPORT_SCHEME :
((type == FOLLOW_REDIR) ? CURLU_URLENCODE : 0) |
CURLU_ALLOW_SPACE);
if(uc) {
if(type != FOLLOW_FAKE)
return Curl_uc_to_curlcode(uc);
/* the URL could not be parsed for some reason, but since this is FAKE
mode, just duplicate the field as-is */
newurl = strdup(newurl);
if(!newurl)
return CURLE_OUT_OF_MEMORY;
}
else {
uc = curl_url_get(data->state.uh, CURLUPART_URL, &newurl, 0);
if(uc)
return Curl_uc_to_curlcode(uc);
/* Clear auth if this redirects to a different port number or protocol,
unless permitted */
if(!data->set.allow_auth_to_other_hosts && (type != FOLLOW_FAKE)) {
char *portnum;
int port;
bool clear = FALSE;
if(data->set.use_port && data->state.allow_port)
/* a custom port is used */
port = (int)data->set.use_port;
else {
uc = curl_url_get(data->state.uh, CURLUPART_PORT, &portnum,
CURLU_DEFAULT_PORT);
if(uc) {
free(newurl);
return Curl_uc_to_curlcode(uc);
}
port = atoi(portnum);
free(portnum);
}
if(port != data->info.conn_remote_port) {
infof(data, "Clear auth, redirects to port from %u to %u",
data->info.conn_remote_port, port);
clear = TRUE;
}
else {
char *scheme;
const struct Curl_handler *p;
uc = curl_url_get(data->state.uh, CURLUPART_SCHEME, &scheme, 0);
if(uc) {
free(newurl);
return Curl_uc_to_curlcode(uc);
}
p = Curl_builtin_scheme(scheme);
if(p && (p->protocol != data->info.conn_protocol)) {
infof(data, "Clear auth, redirects scheme from %s to %s",
data->info.conn_scheme, scheme);
clear = TRUE;
}
free(scheme);
}
if(clear) {
Curl_safefree(data->state.aptr.user);
Curl_safefree(data->state.aptr.passwd);
}
}
}
if(type == FOLLOW_FAKE) {
/* we're only figuring out the new url if we would've followed locations
but now we're done so we can get out! */
data->info.wouldredirect = newurl;
if(reachedmax) {
failf(data, "Maximum (%ld) redirects followed", data->set.maxredirs);
return CURLE_TOO_MANY_REDIRECTS;
}
return CURLE_OK;
}
if(disallowport)
data->state.allow_port = FALSE;
if(data->state.url_alloc)
Curl_safefree(data->state.url);
data->state.url = newurl;
data->state.url_alloc = TRUE;
infof(data, "Issue another request to this URL: '%s'", data->state.url);
/*
* We get here when the HTTP code is 300-399 (and 401). We need to perform
* differently based on exactly what return code there was.
*
* News from 7.10.6: we can also get here on a 401 or 407, in case we act on
* a HTTP (proxy-) authentication scheme other than Basic.
*/
switch(data->info.httpcode) {
/* 401 - Act on a WWW-Authenticate, we keep on moving and do the
Authorization: XXXX header in the HTTP request code snippet */
/* 407 - Act on a Proxy-Authenticate, we keep on moving and do the
Proxy-Authorization: XXXX header in the HTTP request code snippet */
/* 300 - Multiple Choices */
/* 306 - Not used */
/* 307 - Temporary Redirect */
default: /* for all above (and the unknown ones) */
/* Some codes are explicitly mentioned since I've checked RFC2616 and they
* seem to be OK to POST to.
*/
break;
case 301: /* Moved Permanently */
/* (quote from RFC7231, section 6.4.2)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_301)) {
infof(data, "Switch from POST to GET");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 302: /* Found */
/* (quote from RFC7231, section 6.4.3)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_302)) {
infof(data, "Switch from POST to GET");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 303: /* See Other */
/* 'See Other' location is not the resource but a substitute for the
* resource. In this case we switch the method to GET/HEAD, unless the
* method is POST and the user specified to keep it as POST.
* https://github.com/curl/curl/issues/5237#issuecomment-614641049
*/
if(data->state.httpreq != HTTPREQ_GET &&
((data->state.httpreq != HTTPREQ_POST &&
data->state.httpreq != HTTPREQ_POST_FORM &&
data->state.httpreq != HTTPREQ_POST_MIME) ||
!(data->set.keep_post & CURL_REDIR_POST_303))) {
data->state.httpreq = HTTPREQ_GET;
data->set.upload = false;
infof(data, "Switch to %s",
data->set.opt_no_body?"HEAD":"GET");
}
break;
case 304: /* Not Modified */
/* 304 means we did a conditional request and it was "Not modified".
* We shouldn't get any Location: header in this response!
*/
break;
case 305: /* Use Proxy */
/* (quote from RFC2616, section 10.3.6):
* "The requested resource MUST be accessed through the proxy given
* by the Location field. The Location field gives the URI of the
* proxy. The recipient is expected to repeat this single request
* via the proxy. 305 responses MUST only be generated by origin
* servers."
*/
break;
}
Curl_pgrsTime(data, TIMER_REDIRECT);
Curl_pgrsResetTransferSizes(data);
return CURLE_OK;
#endif /* CURL_DISABLE_HTTP */
}
benchmarks/pairs/vfc/curl-cve-2022-27774/vuln.c
+250
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/* Provenance: curl/curl Curl_follow (vuln).
* repo: curl/curl
* commit: 08b8ef4e726ba10f45081ecda5b3cea788d3c839
* parent: 08b8ef4e726ba10f45081ecda5b3cea788d3c839
* commit_url: https://github.com/curl/curl/commit/620ea21410030a9977396b4661806bc187231b79
* cve: CVE-2022-27774
* license: curl
* function: Curl_follow
* relpath: lib/transfer.c
*/
* Curl_follow() handles the URL redirect magic. Pass in the 'newurl' string
* as given by the remote server and set up the new URL to request.
*
* This function DOES NOT FREE the given url.
*/
CURLcode Curl_follow(struct Curl_easy *data,
char *newurl, /* the Location: string */
followtype type) /* see transfer.h */
{
#ifdef CURL_DISABLE_HTTP
(void)data;
(void)newurl;
(void)type;
/* Location: following will not happen when HTTP is disabled */
return CURLE_TOO_MANY_REDIRECTS;
#else
/* Location: redirect */
bool disallowport = FALSE;
bool reachedmax = FALSE;
CURLUcode uc;
DEBUGASSERT(type != FOLLOW_NONE);
if(type != FOLLOW_FAKE)
data->state.requests++; /* count all real follows */
if(type == FOLLOW_REDIR) {
if((data->set.maxredirs != -1) &&
(data->state.followlocation >= data->set.maxredirs)) {
reachedmax = TRUE;
type = FOLLOW_FAKE; /* switch to fake to store the would-be-redirected
to URL */
}
else {
/* mark the next request as a followed location: */
data->state.this_is_a_follow = TRUE;
data->state.followlocation++; /* count location-followers */
if(data->set.http_auto_referer) {
CURLU *u;
char *referer = NULL;
/* We are asked to automatically set the previous URL as the referer
when we get the next URL. We pick the ->url field, which may or may
not be 100% correct */
if(data->state.referer_alloc) {
Curl_safefree(data->state.referer);
data->state.referer_alloc = FALSE;
}
/* Make a copy of the URL without crenditals and fragment */
u = curl_url();
if(!u)
return CURLE_OUT_OF_MEMORY;
uc = curl_url_set(u, CURLUPART_URL, data->state.url, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_FRAGMENT, NULL, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_USER, NULL, 0);
if(!uc)
uc = curl_url_set(u, CURLUPART_PASSWORD, NULL, 0);
if(!uc)
uc = curl_url_get(u, CURLUPART_URL, &referer, 0);
curl_url_cleanup(u);
if(uc || !referer)
return CURLE_OUT_OF_MEMORY;
data->state.referer = referer;
data->state.referer_alloc = TRUE; /* yes, free this later */
}
}
}
if((type != FOLLOW_RETRY) &&
(data->req.httpcode != 401) && (data->req.httpcode != 407) &&
Curl_is_absolute_url(newurl, NULL, 0))
/* If this is not redirect due to a 401 or 407 response and an absolute
URL: don't allow a custom port number */
disallowport = TRUE;
DEBUGASSERT(data->state.uh);
uc = curl_url_set(data->state.uh, CURLUPART_URL, newurl,
(type == FOLLOW_FAKE) ? CURLU_NON_SUPPORT_SCHEME :
((type == FOLLOW_REDIR) ? CURLU_URLENCODE : 0) |
CURLU_ALLOW_SPACE);
if(uc) {
if(type != FOLLOW_FAKE)
return Curl_uc_to_curlcode(uc);
/* the URL could not be parsed for some reason, but since this is FAKE
mode, just duplicate the field as-is */
newurl = strdup(newurl);
if(!newurl)
return CURLE_OUT_OF_MEMORY;
}
else {
uc = curl_url_get(data->state.uh, CURLUPART_URL, &newurl, 0);
if(uc)
return Curl_uc_to_curlcode(uc);
}
if(type == FOLLOW_FAKE) {
/* we're only figuring out the new url if we would've followed locations
but now we're done so we can get out! */
data->info.wouldredirect = newurl;
if(reachedmax) {
failf(data, "Maximum (%ld) redirects followed", data->set.maxredirs);
return CURLE_TOO_MANY_REDIRECTS;
}
return CURLE_OK;
}
if(disallowport)
data->state.allow_port = FALSE;
if(data->state.url_alloc)
Curl_safefree(data->state.url);
data->state.url = newurl;
data->state.url_alloc = TRUE;
infof(data, "Issue another request to this URL: '%s'", data->state.url);
/*
* We get here when the HTTP code is 300-399 (and 401). We need to perform
* differently based on exactly what return code there was.
*
* News from 7.10.6: we can also get here on a 401 or 407, in case we act on
* a HTTP (proxy-) authentication scheme other than Basic.
*/
switch(data->info.httpcode) {
/* 401 - Act on a WWW-Authenticate, we keep on moving and do the
Authorization: XXXX header in the HTTP request code snippet */
/* 407 - Act on a Proxy-Authenticate, we keep on moving and do the
Proxy-Authorization: XXXX header in the HTTP request code snippet */
/* 300 - Multiple Choices */
/* 306 - Not used */
/* 307 - Temporary Redirect */
default: /* for all above (and the unknown ones) */
/* Some codes are explicitly mentioned since I've checked RFC2616 and they
* seem to be OK to POST to.
*/
break;
case 301: /* Moved Permanently */
/* (quote from RFC7231, section 6.4.2)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_301)) {
infof(data, "Switch from POST to GET");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 302: /* Found */
/* (quote from RFC7231, section 6.4.3)
*
* Note: For historical reasons, a user agent MAY change the request
* method from POST to GET for the subsequent request. If this
* behavior is undesired, the 307 (Temporary Redirect) status code
* can be used instead.
*
* ----
*
* Many webservers expect this, so these servers often answers to a POST
* request with an error page. To be sure that libcurl gets the page that
* most user agents would get, libcurl has to force GET.
*
* This behavior is forbidden by RFC1945 and the obsolete RFC2616, and
* can be overridden with CURLOPT_POSTREDIR.
*/
if((data->state.httpreq == HTTPREQ_POST
|| data->state.httpreq == HTTPREQ_POST_FORM
|| data->state.httpreq == HTTPREQ_POST_MIME)
&& !(data->set.keep_post & CURL_REDIR_POST_302)) {
infof(data, "Switch from POST to GET");
data->state.httpreq = HTTPREQ_GET;
}
break;
case 303: /* See Other */
/* 'See Other' location is not the resource but a substitute for the
* resource. In this case we switch the method to GET/HEAD, unless the
* method is POST and the user specified to keep it as POST.
* https://github.com/curl/curl/issues/5237#issuecomment-614641049
*/
if(data->state.httpreq != HTTPREQ_GET &&
((data->state.httpreq != HTTPREQ_POST &&
data->state.httpreq != HTTPREQ_POST_FORM &&
data->state.httpreq != HTTPREQ_POST_MIME) ||
!(data->set.keep_post & CURL_REDIR_POST_303))) {
data->state.httpreq = HTTPREQ_GET;
data->set.upload = false;
infof(data, "Switch to %s",
data->set.opt_no_body?"HEAD":"GET");
}
break;
case 304: /* Not Modified */
/* 304 means we did a conditional request and it was "Not modified".
* We shouldn't get any Location: header in this response!
*/
break;
case 305: /* Use Proxy */
/* (quote from RFC2616, section 10.3.6):
* "The requested resource MUST be accessed through the proxy given
* by the Location field. The Location field gives the URI of the
* proxy. The recipient is expected to repeat this single request
* via the proxy. 305 responses MUST only be generated by origin
* servers."
*/
break;
}
Curl_pgrsTime(data, TIMER_REDIRECT);
Curl_pgrsResetTransferSizes(data);
return CURLE_OK;
#endif /* CURL_DISABLE_HTTP */
}
benchmarks/pairs/vfc/curl-cve-2022-27775/fixed.c
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/* Provenance: curl/curl hashkey (fixed).
* repo: curl/curl
* commit: 058f98dc3fe595f21dc26a5b9b1699e519ba5705
* parent: 852aa5ad351ea53e5f01d2f44b5b4370c2bf5425
* commit_url: https://github.com/curl/curl/commit/058f98dc3fe595f21dc26a5b9b1699e519ba5705
* cve: CVE-2022-27775
* license: curl
* function: hashkey
* relpath: lib/conncache.c
*/
static void hashkey(struct connectdata *conn, char *buf,
size_t len, /* something like 128 is fine */
const char **hostp)
{
const char *hostname;
long port = conn->remote_port;
#ifndef CURL_DISABLE_PROXY
if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
hostname = conn->http_proxy.host.name;
port = conn->port;
}
else
#endif
if(conn->bits.conn_to_host)
hostname = conn->conn_to_host.name;
else
hostname = conn->host.name;
if(hostp)
/* report back which name we used */
*hostp = hostname;
/* put the numbers first so that the hostname gets cut off if too long */
#ifdef ENABLE_IPV6
msnprintf(buf, len, "%u/%ld/%s", conn->scope_id, port, hostname);
#else
msnprintf(buf, len, "%ld/%s", port, hostname);
#endif
Curl_strntolower(buf, buf, len);
}
benchmarks/pairs/vfc/curl-cve-2022-27775/vuln.c
+38
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@@ -0,0 +1,38 @@
/* Provenance: curl/curl hashkey (vuln).
* repo: curl/curl
* commit: 852aa5ad351ea53e5f01d2f44b5b4370c2bf5425
* parent: 852aa5ad351ea53e5f01d2f44b5b4370c2bf5425
* commit_url: https://github.com/curl/curl/commit/058f98dc3fe595f21dc26a5b9b1699e519ba5705
* cve: CVE-2022-27775
* license: curl
* function: hashkey
* relpath: lib/conncache.c
*/
static void hashkey(struct connectdata *conn, char *buf,
size_t len, /* something like 128 is fine */
const char **hostp)
{
const char *hostname;
long port = conn->remote_port;
#ifndef CURL_DISABLE_PROXY
if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
hostname = conn->http_proxy.host.name;
port = conn->port;
}
else
#endif
if(conn->bits.conn_to_host)
hostname = conn->conn_to_host.name;
else
hostname = conn->host.name;
if(hostp)
/* report back which name we used */
*hostp = hostname;
/* put the number first so that the hostname gets cut off if too long */
msnprintf(buf, len, "%ld%s", port, hostname);
Curl_strntolower(buf, buf, len);
}
benchmarks/pairs/vfc/curl-cve-2022-27776/fixed.c
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/* Provenance: curl/curl Curl_add_custom_headers (fixed).
* repo: curl/curl
* commit: 6e659993952aa5f90f48864be84a1bbb047fc258
* parent: 8f2079154f80561ccffcaa954268798b658e66b6
* commit_url: https://github.com/curl/curl/commit/6e659993952aa5f90f48864be84a1bbb047fc258
* cve: CVE-2022-27776
* license: curl
* function: Curl_add_custom_headers
* relpath: lib/http.c
*/
CURLcode Curl_add_custom_headers(struct Curl_easy *data,
bool is_connect,
#ifndef USE_HYPER
struct dynbuf *req
#else
void *req
#endif
)
{
struct connectdata *conn = data->conn;
char *ptr;
struct curl_slist *h[2];
struct curl_slist *headers;
int numlists = 1; /* by default */
int i;
#ifndef CURL_DISABLE_PROXY
enum proxy_use proxy;
if(is_connect)
proxy = HEADER_CONNECT;
else
proxy = conn->bits.httpproxy && !conn->bits.tunnel_proxy?
HEADER_PROXY:HEADER_SERVER;
switch(proxy) {
case HEADER_SERVER:
h[0] = data->set.headers;
break;
case HEADER_PROXY:
h[0] = data->set.headers;
if(data->set.sep_headers) {
h[1] = data->set.proxyheaders;
numlists++;
}
break;
case HEADER_CONNECT:
if(data->set.sep_headers)
h[0] = data->set.proxyheaders;
else
h[0] = data->set.headers;
break;
}
#else
(void)is_connect;
h[0] = data->set.headers;
#endif
/* loop through one or two lists */
for(i = 0; i < numlists; i++) {
headers = h[i];
while(headers) {
char *semicolonp = NULL;
ptr = strchr(headers->data, ':');
if(!ptr) {
char *optr;
/* no colon, semicolon? */
ptr = strchr(headers->data, ';');
if(ptr) {
optr = ptr;
ptr++; /* pass the semicolon */
while(*ptr && ISSPACE(*ptr))
ptr++;
if(*ptr) {
/* this may be used for something else in the future */
optr = NULL;
}
else {
if(*(--ptr) == ';') {
/* copy the source */
semicolonp = strdup(headers->data);
if(!semicolonp) {
#ifndef USE_HYPER
Curl_dyn_free(req);
#endif
return CURLE_OUT_OF_MEMORY;
}
/* put a colon where the semicolon is */
semicolonp[ptr - headers->data] = ':';
/* point at the colon */
optr = &semicolonp [ptr - headers->data];
}
}
ptr = optr;
}
}
if(ptr && (ptr != headers->data)) {
/* we require a colon for this to be a true header */
ptr++; /* pass the colon */
while(*ptr && ISSPACE(*ptr))
ptr++;
if(*ptr || semicolonp) {
/* only send this if the contents was non-blank or done special */
CURLcode result = CURLE_OK;
char *compare = semicolonp ? semicolonp : headers->data;
if(data->state.aptr.host &&
/* a Host: header was sent already, don't pass on any custom Host:
header as that will produce *two* in the same request! */
checkprefix("Host:", compare))
;
else if(data->state.httpreq == HTTPREQ_POST_FORM &&
/* this header (extended by formdata.c) is sent later */
checkprefix("Content-Type:", compare))
;
else if(data->state.httpreq == HTTPREQ_POST_MIME &&
/* this header is sent later */
checkprefix("Content-Type:", compare))
;
else if(conn->bits.authneg &&
/* while doing auth neg, don't allow the custom length since
we will force length zero then */
checkprefix("Content-Length:", compare))
;
else if(data->state.aptr.te &&
/* when asking for Transfer-Encoding, don't pass on a custom
Connection: */
checkprefix("Connection:", compare))
;
else if((conn->httpversion >= 20) &&
checkprefix("Transfer-Encoding:", compare))
/* HTTP/2 doesn't support chunked requests */
;
else if((checkprefix("Authorization:", compare) ||
checkprefix("Cookie:", compare)) &&
/* be careful of sending this potentially sensitive header to
other hosts */
!allow_auth_to_host(data))
;
else {
#ifdef USE_HYPER
result = Curl_hyper_header(data, req, compare);
#else
result = Curl_dyn_addf(req, "%s\r\n", compare);
#endif
}
if(semicolonp)
free(semicolonp);
if(result)
return result;
}
}
headers = headers->next;
}
}
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-27776/vuln.c
+166
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/* Provenance: curl/curl Curl_add_custom_headers (vuln).
* repo: curl/curl
* commit: 8f2079154f80561ccffcaa954268798b658e66b6
* parent: 8f2079154f80561ccffcaa954268798b658e66b6
* commit_url: https://github.com/curl/curl/commit/6e659993952aa5f90f48864be84a1bbb047fc258
* cve: CVE-2022-27776
* license: curl
* function: Curl_add_custom_headers
* relpath: lib/http.c
*/
CURLcode Curl_add_custom_headers(struct Curl_easy *data,
bool is_connect,
#ifndef USE_HYPER
struct dynbuf *req
#else
void *req
#endif
)
{
struct connectdata *conn = data->conn;
char *ptr;
struct curl_slist *h[2];
struct curl_slist *headers;
int numlists = 1; /* by default */
int i;
#ifndef CURL_DISABLE_PROXY
enum proxy_use proxy;
if(is_connect)
proxy = HEADER_CONNECT;
else
proxy = conn->bits.httpproxy && !conn->bits.tunnel_proxy?
HEADER_PROXY:HEADER_SERVER;
switch(proxy) {
case HEADER_SERVER:
h[0] = data->set.headers;
break;
case HEADER_PROXY:
h[0] = data->set.headers;
if(data->set.sep_headers) {
h[1] = data->set.proxyheaders;
numlists++;
}
break;
case HEADER_CONNECT:
if(data->set.sep_headers)
h[0] = data->set.proxyheaders;
else
h[0] = data->set.headers;
break;
}
#else
(void)is_connect;
h[0] = data->set.headers;
#endif
/* loop through one or two lists */
for(i = 0; i < numlists; i++) {
headers = h[i];
while(headers) {
char *semicolonp = NULL;
ptr = strchr(headers->data, ':');
if(!ptr) {
char *optr;
/* no colon, semicolon? */
ptr = strchr(headers->data, ';');
if(ptr) {
optr = ptr;
ptr++; /* pass the semicolon */
while(*ptr && ISSPACE(*ptr))
ptr++;
if(*ptr) {
/* this may be used for something else in the future */
optr = NULL;
}
else {
if(*(--ptr) == ';') {
/* copy the source */
semicolonp = strdup(headers->data);
if(!semicolonp) {
#ifndef USE_HYPER
Curl_dyn_free(req);
#endif
return CURLE_OUT_OF_MEMORY;
}
/* put a colon where the semicolon is */
semicolonp[ptr - headers->data] = ':';
/* point at the colon */
optr = &semicolonp [ptr - headers->data];
}
}
ptr = optr;
}
}
if(ptr && (ptr != headers->data)) {
/* we require a colon for this to be a true header */
ptr++; /* pass the colon */
while(*ptr && ISSPACE(*ptr))
ptr++;
if(*ptr || semicolonp) {
/* only send this if the contents was non-blank or done special */
CURLcode result = CURLE_OK;
char *compare = semicolonp ? semicolonp : headers->data;
if(data->state.aptr.host &&
/* a Host: header was sent already, don't pass on any custom Host:
header as that will produce *two* in the same request! */
checkprefix("Host:", compare))
;
else if(data->state.httpreq == HTTPREQ_POST_FORM &&
/* this header (extended by formdata.c) is sent later */
checkprefix("Content-Type:", compare))
;
else if(data->state.httpreq == HTTPREQ_POST_MIME &&
/* this header is sent later */
checkprefix("Content-Type:", compare))
;
else if(conn->bits.authneg &&
/* while doing auth neg, don't allow the custom length since
we will force length zero then */
checkprefix("Content-Length:", compare))
;
else if(data->state.aptr.te &&
/* when asking for Transfer-Encoding, don't pass on a custom
Connection: */
checkprefix("Connection:", compare))
;
else if((conn->httpversion >= 20) &&
checkprefix("Transfer-Encoding:", compare))
/* HTTP/2 doesn't support chunked requests */
;
else if((checkprefix("Authorization:", compare) ||
checkprefix("Cookie:", compare)) &&
/* be careful of sending this potentially sensitive header to
other hosts */
(data->state.this_is_a_follow &&
data->state.first_host &&
!data->set.allow_auth_to_other_hosts &&
!strcasecompare(data->state.first_host, conn->host.name)))
;
else {
#ifdef USE_HYPER
result = Curl_hyper_header(data, req, compare);
#else
result = Curl_dyn_addf(req, "%s\r\n", compare);
#endif
}
if(semicolonp)
free(semicolonp);
if(result)
return result;
}
}
headers = headers->next;
}
}
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-27778/fixed.c
+318
View File
@@ -0,0 +1,318 @@
/* Provenance: curl/curl post_per_transfer (fixed).
* repo: curl/curl
* commit: 8c7ee9083d0d719d0a77ab20d9cc2ae84eeea7f3
* parent: fae6fea209a2d4db1582f608bd8cc8000721733a
* commit_url: https://github.com/curl/curl/commit/8c7ee9083d0d719d0a77ab20d9cc2ae84eeea7f3
* cve: CVE-2022-27778
* license: curl
* function: post_per_transfer
* relpath: src/tool_operate.c
*/
static CURLcode post_per_transfer(struct GlobalConfig *global,
struct per_transfer *per,
CURLcode result,
bool *retryp,
long *delay) /* milliseconds! */
{
struct OutStruct *outs = &per->outs;
CURL *curl = per->curl;
struct OperationConfig *config = per->config;
if(!curl || !config)
return result;
*retryp = FALSE;
*delay = 0; /* for no retry, keep it zero */
if(per->infdopen)
close(per->infd);
#ifdef __VMS
if(is_vms_shell()) {
/* VMS DCL shell behavior */
if(!global->showerror)
vms_show = VMSSTS_HIDE;
}
else
#endif
if(!config->synthetic_error && result && global->showerror) {
fprintf(global->errors, "curl: (%d) %s\n", result,
(per->errorbuffer[0]) ? per->errorbuffer :
curl_easy_strerror(result));
if(result == CURLE_PEER_FAILED_VERIFICATION)
fputs(CURL_CA_CERT_ERRORMSG, global->errors);
}
else if(config->failwithbody) {
/* if HTTP response >= 400, return error */
long code = 0;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
if(code >= 400) {
if(global->showerror)
fprintf(global->errors,
"curl: (%d) The requested URL returned error: %ld\n",
CURLE_HTTP_RETURNED_ERROR, code);
result = CURLE_HTTP_RETURNED_ERROR;
}
}
/* Set file extended attributes */
if(!result && config->xattr && outs->fopened && outs->stream) {
int rc = fwrite_xattr(curl, fileno(outs->stream));
if(rc)
warnf(config->global, "Error setting extended attributes on '%s': %s\n",
outs->filename, strerror(errno));
}
if(!result && !outs->stream && !outs->bytes) {
/* we have received no data despite the transfer was successful
==> force creation of an empty output file (if an output file
was specified) */
long cond_unmet = 0L;
/* do not create (or even overwrite) the file in case we get no
data because of unmet condition */
curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &cond_unmet);
if(!cond_unmet && !tool_create_output_file(outs, config))
result = CURLE_WRITE_ERROR;
}
if(!outs->s_isreg && outs->stream) {
/* Dump standard stream buffered data */
int rc = fflush(outs->stream);
if(!result && rc) {
/* something went wrong in the writing process */
result = CURLE_WRITE_ERROR;
if(global->showerror)
fprintf(global->errors, "curl: (%d) Failed writing body\n", result);
}
}
/* if retry-max-time is non-zero, make sure we haven't exceeded the
time */
if(per->retry_numretries &&
(!config->retry_maxtime ||
(tvdiff(tvnow(), per->retrystart) <
config->retry_maxtime*1000L)) ) {
enum {
RETRY_NO,
RETRY_ALL_ERRORS,
RETRY_TIMEOUT,
RETRY_CONNREFUSED,
RETRY_HTTP,
RETRY_FTP,
RETRY_LAST /* not used */
} retry = RETRY_NO;
long response = 0;
if((CURLE_OPERATION_TIMEDOUT == result) ||
(CURLE_COULDNT_RESOLVE_HOST == result) ||
(CURLE_COULDNT_RESOLVE_PROXY == result) ||
(CURLE_FTP_ACCEPT_TIMEOUT == result))
/* retry timeout always */
retry = RETRY_TIMEOUT;
else if(config->retry_connrefused &&
(CURLE_COULDNT_CONNECT == result)) {
long oserrno = 0;
curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &oserrno);
if(ECONNREFUSED == oserrno)
retry = RETRY_CONNREFUSED;
}
else if((CURLE_OK == result) ||
(config->failonerror &&
(CURLE_HTTP_RETURNED_ERROR == result))) {
/* If it returned OK. _or_ failonerror was enabled and it
returned due to such an error, check for HTTP transient
errors to retry on. */
long protocol = 0;
curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
if((protocol == CURLPROTO_HTTP) || (protocol == CURLPROTO_HTTPS)) {
/* This was HTTP(S) */
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
switch(response) {
case 408: /* Request Timeout */
case 429: /* Too Many Requests (RFC6585) */
case 500: /* Internal Server Error */
case 502: /* Bad Gateway */
case 503: /* Service Unavailable */
case 504: /* Gateway Timeout */
retry = RETRY_HTTP;
/*
* At this point, we have already written data to the output
* file (or terminal). If we write to a file, we must rewind
* or close/re-open the file so that the next attempt starts
* over from the beginning.
*
* TODO: similar action for the upload case. We might need
* to start over reading from a previous point if we have
* uploaded something when this was returned.
*/
break;
}
}
} /* if CURLE_OK */
else if(result) {
long protocol = 0;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
if((protocol == CURLPROTO_FTP || protocol == CURLPROTO_FTPS) &&
response / 100 == 4)
/*
* This is typically when the FTP server only allows a certain
* amount of users and we are not one of them. All 4xx codes
* are transient.
*/
retry = RETRY_FTP;
}
if(result && !retry && config->retry_all_errors)
retry = RETRY_ALL_ERRORS;
if(retry) {
long sleeptime = 0;
curl_off_t retry_after = 0;
static const char * const m[]={
NULL,
"(retrying all errors)",
": timeout",
": connection refused",
": HTTP error",
": FTP error"
};
sleeptime = per->retry_sleep;
if(RETRY_HTTP == retry) {
curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &retry_after);
if(retry_after) {
/* store in a 'long', make sure it doesn't overflow */
if(retry_after > LONG_MAX/1000)
sleeptime = LONG_MAX;
else
sleeptime = (long)retry_after * 1000; /* milliseconds */
/* if adding retry_after seconds to the process would exceed the
maximum time allowed for retrying, then exit the retries right
away */
if(config->retry_maxtime) {
curl_off_t seconds = tvdiff(tvnow(), per->retrystart)/1000;
if((CURL_OFF_T_MAX - retry_after < seconds) ||
(seconds + retry_after > config->retry_maxtime)) {
warnf(config->global, "The Retry-After: time would "
"make this command line exceed the maximum allowed time "
"for retries.");
goto noretry;
}
}
}
}
warnf(config->global, "Problem %s. "
"Will retry in %ld seconds. "
"%ld retries left.\n",
m[retry], sleeptime/1000L, per->retry_numretries);
per->retry_numretries--;
if(!config->retry_delay) {
per->retry_sleep *= 2;
if(per->retry_sleep > RETRY_SLEEP_MAX)
per->retry_sleep = RETRY_SLEEP_MAX;
}
if(outs->bytes && outs->filename && outs->stream) {
int rc;
/* We have written data to an output file, we truncate file
*/
if(!global->mute)
fprintf(global->errors, "Throwing away %"
CURL_FORMAT_CURL_OFF_T " bytes\n",
outs->bytes);
fflush(outs->stream);
/* truncate file at the position where we started appending */
#ifdef HAVE_FTRUNCATE
if(ftruncate(fileno(outs->stream), outs->init)) {
/* when truncate fails, we can't just append as then we'll
create something strange, bail out */
if(global->showerror)
fprintf(global->errors,
"curl: (23) Failed to truncate file\n");
return CURLE_WRITE_ERROR;
}
/* now seek to the end of the file, the position where we
just truncated the file in a large file-safe way */
rc = fseek(outs->stream, 0, SEEK_END);
#else
/* ftruncate is not available, so just reposition the file
to the location we would have truncated it. This won't
work properly with large files on 32-bit systems, but
most of those will have ftruncate. */
rc = fseek(outs->stream, (long)outs->init, SEEK_SET);
#endif
if(rc) {
if(global->showerror)
fprintf(global->errors,
"curl: (23) Failed seeking to end of file\n");
return CURLE_WRITE_ERROR;
}
outs->bytes = 0; /* clear for next round */
}
*retryp = TRUE;
*delay = sleeptime;
return CURLE_OK;
}
} /* if retry_numretries */
noretry:
if((global->progressmode == CURL_PROGRESS_BAR) &&
per->progressbar.calls)
/* if the custom progress bar has been displayed, we output a
newline here */
fputs("\n", per->progressbar.out);
/* Close the outs file */
if(outs->fopened && outs->stream) {
int rc = fclose(outs->stream);
if(!result && rc) {
/* something went wrong in the writing process */
result = CURLE_WRITE_ERROR;
if(global->showerror)
fprintf(global->errors, "curl: (%d) Failed writing body\n", result);
}
if(result && config->rm_partial) {
notef(global, "Removing output file: %s\n", outs->filename);
unlink(outs->filename);
}
}
/* File time can only be set _after_ the file has been closed */
if(!result && config->remote_time && outs->s_isreg && outs->filename) {
/* Ask libcurl if we got a remote file time */
curl_off_t filetime = -1;
curl_easy_getinfo(curl, CURLINFO_FILETIME_T, &filetime);
setfiletime(filetime, outs->filename, global);
}
/* Write the --write-out data before cleanup but after result is final */
if(config->writeout)
ourWriteOut(config->writeout, per, result);
/* Close function-local opened file descriptors */
if(per->heads.fopened && per->heads.stream)
fclose(per->heads.stream);
if(per->heads.alloc_filename)
Curl_safefree(per->heads.filename);
if(per->etag_save.fopened && per->etag_save.stream)
fclose(per->etag_save.stream);
if(per->etag_save.alloc_filename)
Curl_safefree(per->etag_save.filename);
curl_easy_cleanup(per->curl);
if(outs->alloc_filename)
free(outs->filename);
free(per->this_url);
free(per->outfile);
free(per->uploadfile);
return result;
}
benchmarks/pairs/vfc/curl-cve-2022-27778/vuln.c
+318
View File
@@ -0,0 +1,318 @@
/* Provenance: curl/curl post_per_transfer (vuln).
* repo: curl/curl
* commit: fae6fea209a2d4db1582f608bd8cc8000721733a
* parent: fae6fea209a2d4db1582f608bd8cc8000721733a
* commit_url: https://github.com/curl/curl/commit/8c7ee9083d0d719d0a77ab20d9cc2ae84eeea7f3
* cve: CVE-2022-27778
* license: curl
* function: post_per_transfer
* relpath: src/tool_operate.c
*/
static CURLcode post_per_transfer(struct GlobalConfig *global,
struct per_transfer *per,
CURLcode result,
bool *retryp,
long *delay) /* milliseconds! */
{
struct OutStruct *outs = &per->outs;
CURL *curl = per->curl;
struct OperationConfig *config = per->config;
if(!curl || !config)
return result;
*retryp = FALSE;
*delay = 0; /* for no retry, keep it zero */
if(per->infdopen)
close(per->infd);
#ifdef __VMS
if(is_vms_shell()) {
/* VMS DCL shell behavior */
if(!global->showerror)
vms_show = VMSSTS_HIDE;
}
else
#endif
if(!config->synthetic_error && result && global->showerror) {
fprintf(global->errors, "curl: (%d) %s\n", result,
(per->errorbuffer[0]) ? per->errorbuffer :
curl_easy_strerror(result));
if(result == CURLE_PEER_FAILED_VERIFICATION)
fputs(CURL_CA_CERT_ERRORMSG, global->errors);
}
else if(config->failwithbody) {
/* if HTTP response >= 400, return error */
long code = 0;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
if(code >= 400) {
if(global->showerror)
fprintf(global->errors,
"curl: (%d) The requested URL returned error: %ld\n",
CURLE_HTTP_RETURNED_ERROR, code);
result = CURLE_HTTP_RETURNED_ERROR;
}
}
/* Set file extended attributes */
if(!result && config->xattr && outs->fopened && outs->stream) {
int rc = fwrite_xattr(curl, fileno(outs->stream));
if(rc)
warnf(config->global, "Error setting extended attributes on '%s': %s\n",
outs->filename, strerror(errno));
}
if(!result && !outs->stream && !outs->bytes) {
/* we have received no data despite the transfer was successful
==> force creation of an empty output file (if an output file
was specified) */
long cond_unmet = 0L;
/* do not create (or even overwrite) the file in case we get no
data because of unmet condition */
curl_easy_getinfo(curl, CURLINFO_CONDITION_UNMET, &cond_unmet);
if(!cond_unmet && !tool_create_output_file(outs, config))
result = CURLE_WRITE_ERROR;
}
if(!outs->s_isreg && outs->stream) {
/* Dump standard stream buffered data */
int rc = fflush(outs->stream);
if(!result && rc) {
/* something went wrong in the writing process */
result = CURLE_WRITE_ERROR;
if(global->showerror)
fprintf(global->errors, "curl: (%d) Failed writing body\n", result);
}
}
/* if retry-max-time is non-zero, make sure we haven't exceeded the
time */
if(per->retry_numretries &&
(!config->retry_maxtime ||
(tvdiff(tvnow(), per->retrystart) <
config->retry_maxtime*1000L)) ) {
enum {
RETRY_NO,
RETRY_ALL_ERRORS,
RETRY_TIMEOUT,
RETRY_CONNREFUSED,
RETRY_HTTP,
RETRY_FTP,
RETRY_LAST /* not used */
} retry = RETRY_NO;
long response = 0;
if((CURLE_OPERATION_TIMEDOUT == result) ||
(CURLE_COULDNT_RESOLVE_HOST == result) ||
(CURLE_COULDNT_RESOLVE_PROXY == result) ||
(CURLE_FTP_ACCEPT_TIMEOUT == result))
/* retry timeout always */
retry = RETRY_TIMEOUT;
else if(config->retry_connrefused &&
(CURLE_COULDNT_CONNECT == result)) {
long oserrno = 0;
curl_easy_getinfo(curl, CURLINFO_OS_ERRNO, &oserrno);
if(ECONNREFUSED == oserrno)
retry = RETRY_CONNREFUSED;
}
else if((CURLE_OK == result) ||
(config->failonerror &&
(CURLE_HTTP_RETURNED_ERROR == result))) {
/* If it returned OK. _or_ failonerror was enabled and it
returned due to such an error, check for HTTP transient
errors to retry on. */
long protocol = 0;
curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
if((protocol == CURLPROTO_HTTP) || (protocol == CURLPROTO_HTTPS)) {
/* This was HTTP(S) */
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
switch(response) {
case 408: /* Request Timeout */
case 429: /* Too Many Requests (RFC6585) */
case 500: /* Internal Server Error */
case 502: /* Bad Gateway */
case 503: /* Service Unavailable */
case 504: /* Gateway Timeout */
retry = RETRY_HTTP;
/*
* At this point, we have already written data to the output
* file (or terminal). If we write to a file, we must rewind
* or close/re-open the file so that the next attempt starts
* over from the beginning.
*
* TODO: similar action for the upload case. We might need
* to start over reading from a previous point if we have
* uploaded something when this was returned.
*/
break;
}
}
} /* if CURLE_OK */
else if(result) {
long protocol = 0;
curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response);
curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
if((protocol == CURLPROTO_FTP || protocol == CURLPROTO_FTPS) &&
response / 100 == 4)
/*
* This is typically when the FTP server only allows a certain
* amount of users and we are not one of them. All 4xx codes
* are transient.
*/
retry = RETRY_FTP;
}
if(result && !retry && config->retry_all_errors)
retry = RETRY_ALL_ERRORS;
if(retry) {
long sleeptime = 0;
curl_off_t retry_after = 0;
static const char * const m[]={
NULL,
"(retrying all errors)",
": timeout",
": connection refused",
": HTTP error",
": FTP error"
};
sleeptime = per->retry_sleep;
if(RETRY_HTTP == retry) {
curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &retry_after);
if(retry_after) {
/* store in a 'long', make sure it doesn't overflow */
if(retry_after > LONG_MAX/1000)
sleeptime = LONG_MAX;
else
sleeptime = (long)retry_after * 1000; /* milliseconds */
/* if adding retry_after seconds to the process would exceed the
maximum time allowed for retrying, then exit the retries right
away */
if(config->retry_maxtime) {
curl_off_t seconds = tvdiff(tvnow(), per->retrystart)/1000;
if((CURL_OFF_T_MAX - retry_after < seconds) ||
(seconds + retry_after > config->retry_maxtime)) {
warnf(config->global, "The Retry-After: time would "
"make this command line exceed the maximum allowed time "
"for retries.");
goto noretry;
}
}
}
}
warnf(config->global, "Problem %s. "
"Will retry in %ld seconds. "
"%ld retries left.\n",
m[retry], sleeptime/1000L, per->retry_numretries);
per->retry_numretries--;
if(!config->retry_delay) {
per->retry_sleep *= 2;
if(per->retry_sleep > RETRY_SLEEP_MAX)
per->retry_sleep = RETRY_SLEEP_MAX;
}
if(outs->bytes && outs->filename && outs->stream) {
int rc;
/* We have written data to an output file, we truncate file
*/
if(!global->mute)
fprintf(global->errors, "Throwing away %"
CURL_FORMAT_CURL_OFF_T " bytes\n",
outs->bytes);
fflush(outs->stream);
/* truncate file at the position where we started appending */
#ifdef HAVE_FTRUNCATE
if(ftruncate(fileno(outs->stream), outs->init)) {
/* when truncate fails, we can't just append as then we'll
create something strange, bail out */
if(global->showerror)
fprintf(global->errors,
"curl: (23) Failed to truncate file\n");
return CURLE_WRITE_ERROR;
}
/* now seek to the end of the file, the position where we
just truncated the file in a large file-safe way */
rc = fseek(outs->stream, 0, SEEK_END);
#else
/* ftruncate is not available, so just reposition the file
to the location we would have truncated it. This won't
work properly with large files on 32-bit systems, but
most of those will have ftruncate. */
rc = fseek(outs->stream, (long)outs->init, SEEK_SET);
#endif
if(rc) {
if(global->showerror)
fprintf(global->errors,
"curl: (23) Failed seeking to end of file\n");
return CURLE_WRITE_ERROR;
}
outs->bytes = 0; /* clear for next round */
}
*retryp = TRUE;
*delay = sleeptime;
return CURLE_OK;
}
} /* if retry_numretries */
noretry:
if((global->progressmode == CURL_PROGRESS_BAR) &&
per->progressbar.calls)
/* if the custom progress bar has been displayed, we output a
newline here */
fputs("\n", per->progressbar.out);
/* Close the outs file */
if(outs->fopened && outs->stream) {
int rc = fclose(outs->stream);
if(!result && rc) {
/* something went wrong in the writing process */
result = CURLE_WRITE_ERROR;
if(global->showerror)
fprintf(global->errors, "curl: (%d) Failed writing body\n", result);
}
if(result && config->rm_partial) {
notef(global, "Removing output file: %s", per->outfile);
unlink(per->outfile);
}
}
/* File time can only be set _after_ the file has been closed */
if(!result && config->remote_time && outs->s_isreg && outs->filename) {
/* Ask libcurl if we got a remote file time */
curl_off_t filetime = -1;
curl_easy_getinfo(curl, CURLINFO_FILETIME_T, &filetime);
setfiletime(filetime, outs->filename, global);
}
/* Write the --write-out data before cleanup but after result is final */
if(config->writeout)
ourWriteOut(config->writeout, per, result);
/* Close function-local opened file descriptors */
if(per->heads.fopened && per->heads.stream)
fclose(per->heads.stream);
if(per->heads.alloc_filename)
Curl_safefree(per->heads.filename);
if(per->etag_save.fopened && per->etag_save.stream)
fclose(per->etag_save.stream);
if(per->etag_save.alloc_filename)
Curl_safefree(per->etag_save.filename);
curl_easy_cleanup(per->curl);
if(outs->alloc_filename)
free(outs->filename);
free(per->this_url);
free(per->outfile);
free(per->uploadfile);
return result;
}
benchmarks/pairs/vfc/curl-cve-2022-27780/fixed.c
+84
View File
@@ -0,0 +1,84 @@
/* Provenance: curl/curl hostname_check (fixed).
* repo: curl/curl
* commit: 914aaab9153764ef8fa4178215b8ad89d3ac263a
* parent: 5c7da89d404bf59c8dd82a001119a16d18365917
* commit_url: https://github.com/curl/curl/commit/914aaab9153764ef8fa4178215b8ad89d3ac263a
* cve: CVE-2022-27780
* license: curl
* function: hostname_check
* relpath: lib/urlapi.c
*/
static CURLUcode hostname_check(struct Curl_URL *u, char *hostname)
{
size_t len;
size_t hlen = strlen(hostname);
if(hostname[0] == '[') {
const char *l = "0123456789abcdefABCDEF:.";
if(hlen < 4) /* '[::]' is the shortest possible valid string */
return CURLUE_BAD_IPV6;
hostname++;
hlen -= 2;
if(hostname[hlen] != ']')
return CURLUE_BAD_IPV6;
/* only valid letters are ok */
len = strspn(hostname, l);
if(hlen != len) {
hlen = len;
if(hostname[len] == '%') {
/* this could now be '%[zone id]' */
char zoneid[16];
int i = 0;
char *h = &hostname[len + 1];
/* pass '25' if present and is a url encoded percent sign */
if(!strncmp(h, "25", 2) && h[2] && (h[2] != ']'))
h += 2;
while(*h && (*h != ']') && (i < 15))
zoneid[i++] = *h++;
if(!i || (']' != *h))
/* impossible to reach? */
return CURLUE_MALFORMED_INPUT;
zoneid[i] = 0;
u->zoneid = strdup(zoneid);
if(!u->zoneid)
return CURLUE_OUT_OF_MEMORY;
hostname[len] = ']'; /* insert end bracket */
hostname[len + 1] = 0; /* terminate the hostname */
}
else
return CURLUE_BAD_IPV6;
/* hostname is fine */
}
#ifdef ENABLE_IPV6
{
char dest[16]; /* fits a binary IPv6 address */
char norm[MAX_IPADR_LEN];
hostname[hlen] = 0; /* end the address there */
if(1 != Curl_inet_pton(AF_INET6, hostname, dest))
return CURLUE_BAD_IPV6;
/* check if it can be done shorter */
if(Curl_inet_ntop(AF_INET6, dest, norm, sizeof(norm)) &&
(strlen(norm) < hlen)) {
strcpy(hostname, norm);
hlen = strlen(norm);
hostname[hlen + 1] = 0;
}
hostname[hlen] = ']'; /* restore ending bracket */
}
#endif
}
else {
/* letters from the second string are not ok */
len = strcspn(hostname, " \r\n\t/:#?!@");
if(hlen != len)
/* hostname with bad content */
return CURLUE_BAD_HOSTNAME;
}
if(!hostname[0])
return CURLUE_NO_HOST;
return CURLUE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-27780/vuln.c
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/* Provenance: curl/curl hostname_check (vuln).
* repo: curl/curl
* commit: 5c7da89d404bf59c8dd82a001119a16d18365917
* parent: 5c7da89d404bf59c8dd82a001119a16d18365917
* commit_url: https://github.com/curl/curl/commit/914aaab9153764ef8fa4178215b8ad89d3ac263a
* cve: CVE-2022-27780
* license: curl
* function: hostname_check
* relpath: lib/urlapi.c
*/
static CURLUcode hostname_check(struct Curl_URL *u, char *hostname)
{
size_t len;
size_t hlen = strlen(hostname);
if(hostname[0] == '[') {
const char *l = "0123456789abcdefABCDEF:.";
if(hlen < 4) /* '[::]' is the shortest possible valid string */
return CURLUE_BAD_IPV6;
hostname++;
hlen -= 2;
if(hostname[hlen] != ']')
return CURLUE_BAD_IPV6;
/* only valid letters are ok */
len = strspn(hostname, l);
if(hlen != len) {
hlen = len;
if(hostname[len] == '%') {
/* this could now be '%[zone id]' */
char zoneid[16];
int i = 0;
char *h = &hostname[len + 1];
/* pass '25' if present and is a url encoded percent sign */
if(!strncmp(h, "25", 2) && h[2] && (h[2] != ']'))
h += 2;
while(*h && (*h != ']') && (i < 15))
zoneid[i++] = *h++;
if(!i || (']' != *h))
/* impossible to reach? */
return CURLUE_MALFORMED_INPUT;
zoneid[i] = 0;
u->zoneid = strdup(zoneid);
if(!u->zoneid)
return CURLUE_OUT_OF_MEMORY;
hostname[len] = ']'; /* insert end bracket */
hostname[len + 1] = 0; /* terminate the hostname */
}
else
return CURLUE_BAD_IPV6;
/* hostname is fine */
}
#ifdef ENABLE_IPV6
{
char dest[16]; /* fits a binary IPv6 address */
char norm[MAX_IPADR_LEN];
hostname[hlen] = 0; /* end the address there */
if(1 != Curl_inet_pton(AF_INET6, hostname, dest))
return CURLUE_BAD_IPV6;
/* check if it can be done shorter */
if(Curl_inet_ntop(AF_INET6, dest, norm, sizeof(norm)) &&
(strlen(norm) < hlen)) {
strcpy(hostname, norm);
hlen = strlen(norm);
hostname[hlen + 1] = 0;
}
hostname[hlen] = ']'; /* restore ending bracket */
}
#endif
}
else {
/* letters from the second string is not ok */
len = strcspn(hostname, " \r\n");
if(hlen != len)
/* hostname with bad content */
return CURLUE_BAD_HOSTNAME;
}
if(!hostname[0])
return CURLUE_NO_HOST;
return CURLUE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-27782-curl_free_primary_ssl_co/fixed.c
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/* Provenance: curl/curl Curl_free_primary_ssl_config (fixed).
* repo: curl/curl
* commit: f18af4f874cecab82a9797e8c7541e0990c7a64c
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: Curl_free_primary_ssl_config
* relpath: lib/vtls/vtls.c
*/
void Curl_free_primary_ssl_config(struct ssl_primary_config *sslc)
{
Curl_safefree(sslc->CApath);
Curl_safefree(sslc->CAfile);
Curl_safefree(sslc->issuercert);
Curl_safefree(sslc->clientcert);
Curl_safefree(sslc->random_file);
Curl_safefree(sslc->egdsocket);
Curl_safefree(sslc->cipher_list);
Curl_safefree(sslc->cipher_list13);
Curl_safefree(sslc->pinned_key);
Curl_safefree(sslc->cert_blob);
Curl_safefree(sslc->ca_info_blob);
Curl_safefree(sslc->issuercert_blob);
Curl_safefree(sslc->curves);
Curl_safefree(sslc->CRLfile);
#ifdef USE_TLS_SRP
Curl_safefree(sslc->username);
Curl_safefree(sslc->password);
#endif
}
benchmarks/pairs/vfc/curl-cve-2022-27782-curl_free_primary_ssl_co/vuln.c
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/* Provenance: curl/curl Curl_free_primary_ssl_config (vuln).
* repo: curl/curl
* commit: 7e92d12b4e6911f424678a133b19de670e183a59
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: Curl_free_primary_ssl_config
* relpath: lib/vtls/vtls.c
*/
void Curl_free_primary_ssl_config(struct ssl_primary_config *sslc)
{
Curl_safefree(sslc->CApath);
Curl_safefree(sslc->CAfile);
Curl_safefree(sslc->issuercert);
Curl_safefree(sslc->clientcert);
Curl_safefree(sslc->random_file);
Curl_safefree(sslc->egdsocket);
Curl_safefree(sslc->cipher_list);
Curl_safefree(sslc->cipher_list13);
Curl_safefree(sslc->pinned_key);
Curl_safefree(sslc->cert_blob);
Curl_safefree(sslc->ca_info_blob);
Curl_safefree(sslc->issuercert_blob);
Curl_safefree(sslc->curves);
}
benchmarks/pairs/vfc/curl-cve-2022-27782-curl_init_userdefined/fixed.c
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/* Provenance: curl/curl Curl_init_userdefined (fixed).
* repo: curl/curl
* commit: f18af4f874cecab82a9797e8c7541e0990c7a64c
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: Curl_init_userdefined
* relpath: lib/url.c
*/
CURLcode Curl_init_userdefined(struct Curl_easy *data)
{
struct UserDefined *set = &data->set;
CURLcode result = CURLE_OK;
set->out = stdout; /* default output to stdout */
set->in_set = stdin; /* default input from stdin */
set->err = stderr; /* default stderr to stderr */
/* use fwrite as default function to store output */
set->fwrite_func = (curl_write_callback)fwrite;
/* use fread as default function to read input */
set->fread_func_set = (curl_read_callback)fread;
set->is_fread_set = 0;
set->is_fwrite_set = 0;
set->seek_func = ZERO_NULL;
set->seek_client = ZERO_NULL;
set->filesize = -1; /* we don't know the size */
set->postfieldsize = -1; /* unknown size */
set->maxredirs = -1; /* allow any amount by default */
set->method = HTTPREQ_GET; /* Default HTTP request */
set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
#ifndef CURL_DISABLE_FTP
set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
set->ftp_filemethod = FTPFILE_MULTICWD;
set->ftp_skip_ip = TRUE; /* skip PASV IP by default */
#endif
set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
/* Set the default size of the SSL session ID cache */
set->general_ssl.max_ssl_sessions = 5;
set->proxyport = 0;
set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
/* SOCKS5 proxy auth defaults to username/password + GSS-API */
set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI;
/* make libcurl quiet by default: */
set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
Curl_mime_initpart(&set->mimepost, data);
/*
* libcurl 7.10 introduced SSL verification *by default*! This needs to be
* switched off unless wanted.
*/
#ifndef CURL_DISABLE_DOH
set->doh_verifyhost = TRUE;
set->doh_verifypeer = TRUE;
#endif
set->ssl.primary.verifypeer = TRUE;
set->ssl.primary.verifyhost = TRUE;
#ifdef USE_TLS_SRP
set->ssl.primary.authtype = CURL_TLSAUTH_NONE;
#endif
set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
type */
set->ssl.primary.sessionid = TRUE; /* session ID caching enabled by
default */
#ifndef CURL_DISABLE_PROXY
set->proxy_ssl = set->ssl;
#endif
set->new_file_perms = 0644; /* Default permissions */
set->new_directory_perms = 0755; /* Default permissions */
/* for the *protocols fields we don't use the CURLPROTO_ALL convenience
define since we internally only use the lower 16 bits for the passed
in bitmask to not conflict with the private bits */
set->allowed_protocols = CURLPROTO_ALL;
set->redir_protocols = CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_FTP |
CURLPROTO_FTPS;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
/*
* disallow unprotected protection negotiation NEC reference implementation
* seem not to follow rfc1961 section 4.3/4.4
*/
set->socks5_gssapi_nec = FALSE;
#endif
/* Set the default CA cert bundle/path detected/specified at build time.
*
* If Schannel is the selected SSL backend then these locations are
* ignored. We allow setting CA location for schannel only when explicitly
* specified by the user via CURLOPT_CAINFO / --cacert.
*/
if(Curl_ssl_backend() != CURLSSLBACKEND_SCHANNEL) {
#if defined(CURL_CA_BUNDLE)
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE], CURL_CA_BUNDLE);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_PROXY],
CURL_CA_BUNDLE);
if(result)
return result;
#endif
#if defined(CURL_CA_PATH)
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH], CURL_CA_PATH);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_PROXY], CURL_CA_PATH);
if(result)
return result;
#endif
}
set->wildcard_enabled = FALSE;
set->chunk_bgn = ZERO_NULL;
set->chunk_end = ZERO_NULL;
set->tcp_keepalive = FALSE;
set->tcp_keepintvl = 60;
set->tcp_keepidle = 60;
set->tcp_fastopen = FALSE;
set->tcp_nodelay = TRUE;
set->ssl_enable_npn = TRUE;
set->ssl_enable_alpn = TRUE;
set->expect_100_timeout = 1000L; /* Wait for a second by default. */
set->sep_headers = TRUE; /* separated header lists by default */
set->buffer_size = READBUFFER_SIZE;
set->upload_buffer_size = UPLOADBUFFER_DEFAULT;
set->happy_eyeballs_timeout = CURL_HET_DEFAULT;
set->fnmatch = ZERO_NULL;
set->upkeep_interval_ms = CURL_UPKEEP_INTERVAL_DEFAULT;
set->maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
set->maxage_conn = 118;
set->maxlifetime_conn = 0;
set->http09_allowed = FALSE;
set->httpwant =
#ifdef USE_HTTP2
CURL_HTTP_VERSION_2TLS
#else
CURL_HTTP_VERSION_1_1
#endif
;
Curl_http2_init_userset(set);
return result;
}
benchmarks/pairs/vfc/curl-cve-2022-27782-curl_init_userdefined/vuln.c
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/* Provenance: curl/curl Curl_init_userdefined (vuln).
* repo: curl/curl
* commit: 7e92d12b4e6911f424678a133b19de670e183a59
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: Curl_init_userdefined
* relpath: lib/url.c
*/
CURLcode Curl_init_userdefined(struct Curl_easy *data)
{
struct UserDefined *set = &data->set;
CURLcode result = CURLE_OK;
set->out = stdout; /* default output to stdout */
set->in_set = stdin; /* default input from stdin */
set->err = stderr; /* default stderr to stderr */
/* use fwrite as default function to store output */
set->fwrite_func = (curl_write_callback)fwrite;
/* use fread as default function to read input */
set->fread_func_set = (curl_read_callback)fread;
set->is_fread_set = 0;
set->is_fwrite_set = 0;
set->seek_func = ZERO_NULL;
set->seek_client = ZERO_NULL;
set->filesize = -1; /* we don't know the size */
set->postfieldsize = -1; /* unknown size */
set->maxredirs = -1; /* allow any amount by default */
set->method = HTTPREQ_GET; /* Default HTTP request */
set->rtspreq = RTSPREQ_OPTIONS; /* Default RTSP request */
#ifndef CURL_DISABLE_FTP
set->ftp_use_epsv = TRUE; /* FTP defaults to EPSV operations */
set->ftp_use_eprt = TRUE; /* FTP defaults to EPRT operations */
set->ftp_use_pret = FALSE; /* mainly useful for drftpd servers */
set->ftp_filemethod = FTPFILE_MULTICWD;
set->ftp_skip_ip = TRUE; /* skip PASV IP by default */
#endif
set->dns_cache_timeout = 60; /* Timeout every 60 seconds by default */
/* Set the default size of the SSL session ID cache */
set->general_ssl.max_ssl_sessions = 5;
set->proxyport = 0;
set->proxytype = CURLPROXY_HTTP; /* defaults to HTTP proxy */
set->httpauth = CURLAUTH_BASIC; /* defaults to basic */
set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
/* SOCKS5 proxy auth defaults to username/password + GSS-API */
set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI;
/* make libcurl quiet by default: */
set->hide_progress = TRUE; /* CURLOPT_NOPROGRESS changes these */
Curl_mime_initpart(&set->mimepost, data);
/*
* libcurl 7.10 introduced SSL verification *by default*! This needs to be
* switched off unless wanted.
*/
#ifndef CURL_DISABLE_DOH
set->doh_verifyhost = TRUE;
set->doh_verifypeer = TRUE;
#endif
set->ssl.primary.verifypeer = TRUE;
set->ssl.primary.verifyhost = TRUE;
#ifdef USE_TLS_SRP
set->ssl.authtype = CURL_TLSAUTH_NONE;
#endif
set->ssh_auth_types = CURLSSH_AUTH_DEFAULT; /* defaults to any auth
type */
set->ssl.primary.sessionid = TRUE; /* session ID caching enabled by
default */
#ifndef CURL_DISABLE_PROXY
set->proxy_ssl = set->ssl;
#endif
set->new_file_perms = 0644; /* Default permissions */
set->new_directory_perms = 0755; /* Default permissions */
/* for the *protocols fields we don't use the CURLPROTO_ALL convenience
define since we internally only use the lower 16 bits for the passed
in bitmask to not conflict with the private bits */
set->allowed_protocols = CURLPROTO_ALL;
set->redir_protocols = CURLPROTO_HTTP | CURLPROTO_HTTPS | CURLPROTO_FTP |
CURLPROTO_FTPS;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
/*
* disallow unprotected protection negotiation NEC reference implementation
* seem not to follow rfc1961 section 4.3/4.4
*/
set->socks5_gssapi_nec = FALSE;
#endif
/* Set the default CA cert bundle/path detected/specified at build time.
*
* If Schannel is the selected SSL backend then these locations are
* ignored. We allow setting CA location for schannel only when explicitly
* specified by the user via CURLOPT_CAINFO / --cacert.
*/
if(Curl_ssl_backend() != CURLSSLBACKEND_SCHANNEL) {
#if defined(CURL_CA_BUNDLE)
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE], CURL_CA_BUNDLE);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAFILE_PROXY],
CURL_CA_BUNDLE);
if(result)
return result;
#endif
#if defined(CURL_CA_PATH)
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH], CURL_CA_PATH);
if(result)
return result;
result = Curl_setstropt(&set->str[STRING_SSL_CAPATH_PROXY], CURL_CA_PATH);
if(result)
return result;
#endif
}
set->wildcard_enabled = FALSE;
set->chunk_bgn = ZERO_NULL;
set->chunk_end = ZERO_NULL;
set->tcp_keepalive = FALSE;
set->tcp_keepintvl = 60;
set->tcp_keepidle = 60;
set->tcp_fastopen = FALSE;
set->tcp_nodelay = TRUE;
set->ssl_enable_npn = TRUE;
set->ssl_enable_alpn = TRUE;
set->expect_100_timeout = 1000L; /* Wait for a second by default. */
set->sep_headers = TRUE; /* separated header lists by default */
set->buffer_size = READBUFFER_SIZE;
set->upload_buffer_size = UPLOADBUFFER_DEFAULT;
set->happy_eyeballs_timeout = CURL_HET_DEFAULT;
set->fnmatch = ZERO_NULL;
set->upkeep_interval_ms = CURL_UPKEEP_INTERVAL_DEFAULT;
set->maxconnects = DEFAULT_CONNCACHE_SIZE; /* for easy handles */
set->maxage_conn = 118;
set->maxlifetime_conn = 0;
set->http09_allowed = FALSE;
set->httpwant =
#ifdef USE_HTTP2
CURL_HTTP_VERSION_2TLS
#else
CURL_HTTP_VERSION_1_1
#endif
;
Curl_http2_init_userset(set);
return result;
}
benchmarks/pairs/vfc/curl-cve-2022-27782-gtls_shutdown/fixed.c
+86
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/* Provenance: curl/curl gtls_shutdown (fixed).
* repo: curl/curl
* commit: f18af4f874cecab82a9797e8c7541e0990c7a64c
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: gtls_shutdown
* relpath: lib/vtls/gtls.c
*/
static int gtls_shutdown(struct Curl_easy *data, struct connectdata *conn,
int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
int retval = 0;
DEBUGASSERT(backend);
#ifndef CURL_DISABLE_FTP
/* This has only been tested on the proftpd server, and the mod_tls code
sends a close notify alert without waiting for a close notify alert in
response. Thus we wait for a close notify alert from the server, but
we do not send one. Let's hope other servers do the same... */
if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
gnutls_bye(backend->session, GNUTLS_SHUT_WR);
#endif
if(backend->session) {
ssize_t result;
bool done = FALSE;
char buf[120];
while(!done) {
int what = SOCKET_READABLE(conn->sock[sockindex],
SSL_SHUTDOWN_TIMEOUT);
if(what > 0) {
/* Something to read, let's do it and hope that it is the close
notify alert from the server */
result = gnutls_record_recv(backend->session,
buf, sizeof(buf));
switch(result) {
case 0:
/* This is the expected response. There was no data but only
the close notify alert */
done = TRUE;
break;
case GNUTLS_E_AGAIN:
case GNUTLS_E_INTERRUPTED:
infof(data, "GNUTLS_E_AGAIN || GNUTLS_E_INTERRUPTED");
break;
default:
retval = -1;
done = TRUE;
break;
}
}
else if(0 == what) {
/* timeout */
failf(data, "SSL shutdown timeout");
done = TRUE;
}
else {
/* anything that gets here is fatally bad */
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
retval = -1;
done = TRUE;
}
}
gnutls_deinit(backend->session);
}
gnutls_certificate_free_credentials(backend->cred);
#ifdef USE_GNUTLS_SRP
if(SSL_SET_OPTION(primary.authtype) == CURL_TLSAUTH_SRP
&& SSL_SET_OPTION(primary.username) != NULL)
gnutls_srp_free_client_credentials(backend->srp_client_cred);
#endif
backend->cred = NULL;
backend->session = NULL;
return retval;
}
benchmarks/pairs/vfc/curl-cve-2022-27782-gtls_shutdown/vuln.c
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/* Provenance: curl/curl gtls_shutdown (vuln).
* repo: curl/curl
* commit: 7e92d12b4e6911f424678a133b19de670e183a59
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: gtls_shutdown
* relpath: lib/vtls/gtls.c
*/
static int gtls_shutdown(struct Curl_easy *data, struct connectdata *conn,
int sockindex)
{
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
int retval = 0;
DEBUGASSERT(backend);
#ifndef CURL_DISABLE_FTP
/* This has only been tested on the proftpd server, and the mod_tls code
sends a close notify alert without waiting for a close notify alert in
response. Thus we wait for a close notify alert from the server, but
we do not send one. Let's hope other servers do the same... */
if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
gnutls_bye(backend->session, GNUTLS_SHUT_WR);
#endif
if(backend->session) {
ssize_t result;
bool done = FALSE;
char buf[120];
while(!done) {
int what = SOCKET_READABLE(conn->sock[sockindex],
SSL_SHUTDOWN_TIMEOUT);
if(what > 0) {
/* Something to read, let's do it and hope that it is the close
notify alert from the server */
result = gnutls_record_recv(backend->session,
buf, sizeof(buf));
switch(result) {
case 0:
/* This is the expected response. There was no data but only
the close notify alert */
done = TRUE;
break;
case GNUTLS_E_AGAIN:
case GNUTLS_E_INTERRUPTED:
infof(data, "GNUTLS_E_AGAIN || GNUTLS_E_INTERRUPTED");
break;
default:
retval = -1;
done = TRUE;
break;
}
}
else if(0 == what) {
/* timeout */
failf(data, "SSL shutdown timeout");
done = TRUE;
}
else {
/* anything that gets here is fatally bad */
failf(data, "select/poll on SSL socket, errno: %d", SOCKERRNO);
retval = -1;
done = TRUE;
}
}
gnutls_deinit(backend->session);
}
gnutls_certificate_free_credentials(backend->cred);
#ifdef USE_GNUTLS_SRP
if(SSL_SET_OPTION(authtype) == CURL_TLSAUTH_SRP
&& SSL_SET_OPTION(username) != NULL)
gnutls_srp_free_client_credentials(backend->srp_client_cred);
#endif
backend->cred = NULL;
backend->session = NULL;
return retval;
}
benchmarks/pairs/vfc/curl-cve-2022-27782-nss_setup_connect/fixed.c
+324
View File
@@ -0,0 +1,324 @@
/* Provenance: curl/curl nss_setup_connect (fixed).
* repo: curl/curl
* commit: f18af4f874cecab82a9797e8c7541e0990c7a64c
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: nss_setup_connect
* relpath: lib/vtls/nss.c
*/
static CURLcode nss_setup_connect(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
PRFileDesc *model = NULL;
PRFileDesc *nspr_io = NULL;
PRFileDesc *nspr_io_stub = NULL;
PRBool ssl_no_cache;
PRBool ssl_cbc_random_iv;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
CURLcode result;
bool second_layer = FALSE;
SSLVersionRange sslver_supported;
SSLVersionRange sslver = {
SSL_LIBRARY_VERSION_TLS_1_0, /* min */
#ifdef SSL_LIBRARY_VERSION_TLS_1_3
SSL_LIBRARY_VERSION_TLS_1_3 /* max */
#elif defined SSL_LIBRARY_VERSION_TLS_1_2
SSL_LIBRARY_VERSION_TLS_1_2
#elif defined SSL_LIBRARY_VERSION_TLS_1_1
SSL_LIBRARY_VERSION_TLS_1_1
#else
SSL_LIBRARY_VERSION_TLS_1_0
#endif
};
char *snihost = Curl_ssl_snihost(data, SSL_HOST_NAME(), NULL);
if(!snihost) {
failf(data, "Failed to set SNI");
return CURLE_SSL_CONNECT_ERROR;
}
DEBUGASSERT(backend);
backend->data = data;
/* list of all NSS objects we need to destroy in nss_do_close() */
Curl_llist_init(&backend->obj_list, nss_destroy_object);
PR_Lock(nss_initlock);
result = nss_setup(data);
if(result) {
PR_Unlock(nss_initlock);
goto error;
}
PK11_SetPasswordFunc(nss_get_password);
result = nss_load_module(&pem_module, pem_library, "PEM");
PR_Unlock(nss_initlock);
if(result == CURLE_FAILED_INIT)
infof(data, "WARNING: failed to load NSS PEM library %s. Using "
"OpenSSL PEM certificates will not work.", pem_library);
else if(result)
goto error;
result = CURLE_SSL_CONNECT_ERROR;
model = PR_NewTCPSocket();
if(!model)
goto error;
model = SSL_ImportFD(NULL, model);
if(SSL_OptionSet(model, SSL_SECURITY, PR_TRUE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) != SECSuccess)
goto error;
/* do not use SSL cache if disabled or we are not going to verify peer */
ssl_no_cache = (SSL_SET_OPTION(primary.sessionid)
&& SSL_CONN_CONFIG(verifypeer)) ? PR_FALSE : PR_TRUE;
if(SSL_OptionSet(model, SSL_NO_CACHE, ssl_no_cache) != SECSuccess)
goto error;
/* enable/disable the requested SSL version(s) */
if(nss_init_sslver(&sslver, data, conn) != CURLE_OK)
goto error;
if(SSL_VersionRangeGetSupported(ssl_variant_stream,
&sslver_supported) != SECSuccess)
goto error;
if(sslver_supported.max < sslver.max && sslver_supported.max >= sslver.min) {
char *sslver_req_str, *sslver_supp_str;
sslver_req_str = nss_sslver_to_name(sslver.max);
sslver_supp_str = nss_sslver_to_name(sslver_supported.max);
if(sslver_req_str && sslver_supp_str)
infof(data, "Falling back from %s to max supported SSL version (%s)",
sslver_req_str, sslver_supp_str);
free(sslver_req_str);
free(sslver_supp_str);
sslver.max = sslver_supported.max;
}
if(SSL_VersionRangeSet(model, &sslver) != SECSuccess)
goto error;
ssl_cbc_random_iv = !SSL_SET_OPTION(enable_beast);
#ifdef SSL_CBC_RANDOM_IV
/* unless the user explicitly asks to allow the protocol vulnerability, we
use the work-around */
if(SSL_OptionSet(model, SSL_CBC_RANDOM_IV, ssl_cbc_random_iv) != SECSuccess)
infof(data, "WARNING: failed to set SSL_CBC_RANDOM_IV = %d",
ssl_cbc_random_iv);
#else
if(ssl_cbc_random_iv)
infof(data, "WARNING: support for SSL_CBC_RANDOM_IV not compiled in");
#endif
if(SSL_CONN_CONFIG(cipher_list)) {
if(set_ciphers(data, model, SSL_CONN_CONFIG(cipher_list)) != SECSuccess) {
result = CURLE_SSL_CIPHER;
goto error;
}
}
if(!SSL_CONN_CONFIG(verifypeer) && SSL_CONN_CONFIG(verifyhost))
infof(data, "WARNING: ignoring value of ssl.verifyhost");
/* bypass the default SSL_AuthCertificate() hook in case we do not want to
* verify peer */
if(SSL_AuthCertificateHook(model, nss_auth_cert_hook, data) != SECSuccess)
goto error;
/* not checked yet */
SSL_SET_OPTION_LVALUE(certverifyresult) = 0;
if(SSL_BadCertHook(model, BadCertHandler, data) != SECSuccess)
goto error;
if(SSL_HandshakeCallback(model, HandshakeCallback, data) != SECSuccess)
goto error;
{
const CURLcode rv = nss_load_ca_certificates(data, conn, sockindex);
if((rv == CURLE_SSL_CACERT_BADFILE) && !SSL_CONN_CONFIG(verifypeer))
/* not a fatal error because we are not going to verify the peer */
infof(data, "WARNING: CA certificates failed to load");
else if(rv) {
result = rv;
goto error;
}
}
if(SSL_SET_OPTION(primary.CRLfile)) {
const CURLcode rv = nss_load_crl(SSL_SET_OPTION(primary.CRLfile));
if(rv) {
result = rv;
goto error;
}
infof(data, " CRLfile: %s", SSL_SET_OPTION(primary.CRLfile));
}
if(SSL_SET_OPTION(primary.clientcert)) {
char *nickname = dup_nickname(data, SSL_SET_OPTION(primary.clientcert));
if(nickname) {
/* we are not going to use libnsspem.so to read the client cert */
backend->obj_clicert = NULL;
}
else {
CURLcode rv = cert_stuff(data, conn, sockindex,
SSL_SET_OPTION(primary.clientcert),
SSL_SET_OPTION(key));
if(rv) {
/* failf() is already done in cert_stuff() */
result = rv;
goto error;
}
}
/* store the nickname for SelectClientCert() called during handshake */
backend->client_nickname = nickname;
}
else
backend->client_nickname = NULL;
if(SSL_GetClientAuthDataHook(model, SelectClientCert,
(void *)connssl) != SECSuccess) {
result = CURLE_SSL_CERTPROBLEM;
goto error;
}
#ifndef CURL_DISABLE_PROXY
if(conn->proxy_ssl[sockindex].use) {
struct ssl_backend_data *proxy_backend;
proxy_backend = conn->proxy_ssl[sockindex].backend;
DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
DEBUGASSERT(proxy_backend);
DEBUGASSERT(proxy_backend->handle);
nspr_io = proxy_backend->handle;
second_layer = TRUE;
}
#endif
else {
/* wrap OS file descriptor by NSPR's file descriptor abstraction */
nspr_io = PR_ImportTCPSocket(sockfd);
if(!nspr_io)
goto error;
}
/* create our own NSPR I/O layer */
nspr_io_stub = PR_CreateIOLayerStub(nspr_io_identity, &nspr_io_methods);
if(!nspr_io_stub) {
if(!second_layer)
PR_Close(nspr_io);
goto error;
}
/* make the per-connection data accessible from NSPR I/O callbacks */
nspr_io_stub->secret = (void *)connssl;
/* push our new layer to the NSPR I/O stack */
if(PR_PushIOLayer(nspr_io, PR_TOP_IO_LAYER, nspr_io_stub) != PR_SUCCESS) {
if(!second_layer)
PR_Close(nspr_io);
PR_Close(nspr_io_stub);
goto error;
}
/* import our model socket onto the current I/O stack */
backend->handle = SSL_ImportFD(model, nspr_io);
if(!backend->handle) {
if(!second_layer)
PR_Close(nspr_io);
goto error;
}
PR_Close(model); /* We don't need this any more */
model = NULL;
/* This is the password associated with the cert that we're using */
if(SSL_SET_OPTION(key_passwd)) {
SSL_SetPKCS11PinArg(backend->handle, SSL_SET_OPTION(key_passwd));
}
#ifdef SSL_ENABLE_OCSP_STAPLING
if(SSL_CONN_CONFIG(verifystatus)) {
if(SSL_OptionSet(backend->handle, SSL_ENABLE_OCSP_STAPLING, PR_TRUE)
!= SECSuccess)
goto error;
}
#endif
#ifdef SSL_ENABLE_NPN
if(SSL_OptionSet(backend->handle, SSL_ENABLE_NPN, conn->bits.tls_enable_npn
? PR_TRUE : PR_FALSE) != SECSuccess)
goto error;
#endif
#ifdef SSL_ENABLE_ALPN
if(SSL_OptionSet(backend->handle, SSL_ENABLE_ALPN, conn->bits.tls_enable_alpn
? PR_TRUE : PR_FALSE) != SECSuccess)
goto error;
#endif
#if NSSVERNUM >= 0x030f04 /* 3.15.4 */
if(data->set.ssl.falsestart) {
if(SSL_OptionSet(backend->handle, SSL_ENABLE_FALSE_START, PR_TRUE)
!= SECSuccess)
goto error;
if(SSL_SetCanFalseStartCallback(backend->handle, CanFalseStartCallback,
data) != SECSuccess)
goto error;
}
#endif
#if defined(SSL_ENABLE_NPN) || defined(SSL_ENABLE_ALPN)
if(conn->bits.tls_enable_npn || conn->bits.tls_enable_alpn) {
int cur = 0;
unsigned char protocols[128];
#ifdef USE_HTTP2
if(data->state.httpwant >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
protocols[cur++] = ALPN_H2_LENGTH;
memcpy(&protocols[cur], ALPN_H2, ALPN_H2_LENGTH);
cur += ALPN_H2_LENGTH;
}
#endif
protocols[cur++] = ALPN_HTTP_1_1_LENGTH;
memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
cur += ALPN_HTTP_1_1_LENGTH;
if(SSL_SetNextProtoNego(backend->handle, protocols, cur) != SECSuccess)
goto error;
}
#endif
/* Force handshake on next I/O */
if(SSL_ResetHandshake(backend->handle, /* asServer */ PR_FALSE)
!= SECSuccess)
goto error;
/* propagate hostname to the TLS layer */
if(SSL_SetURL(backend->handle, snihost) != SECSuccess)
goto error;
/* prevent NSS from re-using the session for a different hostname */
if(SSL_SetSockPeerID(backend->handle, snihost) != SECSuccess)
goto error;
return CURLE_OK;
error:
if(model)
PR_Close(model);
return nss_fail_connect(connssl, data, result);
}
benchmarks/pairs/vfc/curl-cve-2022-27782-nss_setup_connect/vuln.c
+324
View File
@@ -0,0 +1,324 @@
/* Provenance: curl/curl nss_setup_connect (vuln).
* repo: curl/curl
* commit: 7e92d12b4e6911f424678a133b19de670e183a59
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: nss_setup_connect
* relpath: lib/vtls/nss.c
*/
static CURLcode nss_setup_connect(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
PRFileDesc *model = NULL;
PRFileDesc *nspr_io = NULL;
PRFileDesc *nspr_io_stub = NULL;
PRBool ssl_no_cache;
PRBool ssl_cbc_random_iv;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
struct ssl_backend_data *backend = connssl->backend;
CURLcode result;
bool second_layer = FALSE;
SSLVersionRange sslver_supported;
SSLVersionRange sslver = {
SSL_LIBRARY_VERSION_TLS_1_0, /* min */
#ifdef SSL_LIBRARY_VERSION_TLS_1_3
SSL_LIBRARY_VERSION_TLS_1_3 /* max */
#elif defined SSL_LIBRARY_VERSION_TLS_1_2
SSL_LIBRARY_VERSION_TLS_1_2
#elif defined SSL_LIBRARY_VERSION_TLS_1_1
SSL_LIBRARY_VERSION_TLS_1_1
#else
SSL_LIBRARY_VERSION_TLS_1_0
#endif
};
char *snihost = Curl_ssl_snihost(data, SSL_HOST_NAME(), NULL);
if(!snihost) {
failf(data, "Failed to set SNI");
return CURLE_SSL_CONNECT_ERROR;
}
DEBUGASSERT(backend);
backend->data = data;
/* list of all NSS objects we need to destroy in nss_do_close() */
Curl_llist_init(&backend->obj_list, nss_destroy_object);
PR_Lock(nss_initlock);
result = nss_setup(data);
if(result) {
PR_Unlock(nss_initlock);
goto error;
}
PK11_SetPasswordFunc(nss_get_password);
result = nss_load_module(&pem_module, pem_library, "PEM");
PR_Unlock(nss_initlock);
if(result == CURLE_FAILED_INIT)
infof(data, "WARNING: failed to load NSS PEM library %s. Using "
"OpenSSL PEM certificates will not work.", pem_library);
else if(result)
goto error;
result = CURLE_SSL_CONNECT_ERROR;
model = PR_NewTCPSocket();
if(!model)
goto error;
model = SSL_ImportFD(NULL, model);
if(SSL_OptionSet(model, SSL_SECURITY, PR_TRUE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_SERVER, PR_FALSE) != SECSuccess)
goto error;
if(SSL_OptionSet(model, SSL_HANDSHAKE_AS_CLIENT, PR_TRUE) != SECSuccess)
goto error;
/* do not use SSL cache if disabled or we are not going to verify peer */
ssl_no_cache = (SSL_SET_OPTION(primary.sessionid)
&& SSL_CONN_CONFIG(verifypeer)) ? PR_FALSE : PR_TRUE;
if(SSL_OptionSet(model, SSL_NO_CACHE, ssl_no_cache) != SECSuccess)
goto error;
/* enable/disable the requested SSL version(s) */
if(nss_init_sslver(&sslver, data, conn) != CURLE_OK)
goto error;
if(SSL_VersionRangeGetSupported(ssl_variant_stream,
&sslver_supported) != SECSuccess)
goto error;
if(sslver_supported.max < sslver.max && sslver_supported.max >= sslver.min) {
char *sslver_req_str, *sslver_supp_str;
sslver_req_str = nss_sslver_to_name(sslver.max);
sslver_supp_str = nss_sslver_to_name(sslver_supported.max);
if(sslver_req_str && sslver_supp_str)
infof(data, "Falling back from %s to max supported SSL version (%s)",
sslver_req_str, sslver_supp_str);
free(sslver_req_str);
free(sslver_supp_str);
sslver.max = sslver_supported.max;
}
if(SSL_VersionRangeSet(model, &sslver) != SECSuccess)
goto error;
ssl_cbc_random_iv = !SSL_SET_OPTION(enable_beast);
#ifdef SSL_CBC_RANDOM_IV
/* unless the user explicitly asks to allow the protocol vulnerability, we
use the work-around */
if(SSL_OptionSet(model, SSL_CBC_RANDOM_IV, ssl_cbc_random_iv) != SECSuccess)
infof(data, "WARNING: failed to set SSL_CBC_RANDOM_IV = %d",
ssl_cbc_random_iv);
#else
if(ssl_cbc_random_iv)
infof(data, "WARNING: support for SSL_CBC_RANDOM_IV not compiled in");
#endif
if(SSL_CONN_CONFIG(cipher_list)) {
if(set_ciphers(data, model, SSL_CONN_CONFIG(cipher_list)) != SECSuccess) {
result = CURLE_SSL_CIPHER;
goto error;
}
}
if(!SSL_CONN_CONFIG(verifypeer) && SSL_CONN_CONFIG(verifyhost))
infof(data, "WARNING: ignoring value of ssl.verifyhost");
/* bypass the default SSL_AuthCertificate() hook in case we do not want to
* verify peer */
if(SSL_AuthCertificateHook(model, nss_auth_cert_hook, data) != SECSuccess)
goto error;
/* not checked yet */
SSL_SET_OPTION_LVALUE(certverifyresult) = 0;
if(SSL_BadCertHook(model, BadCertHandler, data) != SECSuccess)
goto error;
if(SSL_HandshakeCallback(model, HandshakeCallback, data) != SECSuccess)
goto error;
{
const CURLcode rv = nss_load_ca_certificates(data, conn, sockindex);
if((rv == CURLE_SSL_CACERT_BADFILE) && !SSL_CONN_CONFIG(verifypeer))
/* not a fatal error because we are not going to verify the peer */
infof(data, "WARNING: CA certificates failed to load");
else if(rv) {
result = rv;
goto error;
}
}
if(SSL_SET_OPTION(CRLfile)) {
const CURLcode rv = nss_load_crl(SSL_SET_OPTION(CRLfile));
if(rv) {
result = rv;
goto error;
}
infof(data, " CRLfile: %s", SSL_SET_OPTION(CRLfile));
}
if(SSL_SET_OPTION(primary.clientcert)) {
char *nickname = dup_nickname(data, SSL_SET_OPTION(primary.clientcert));
if(nickname) {
/* we are not going to use libnsspem.so to read the client cert */
backend->obj_clicert = NULL;
}
else {
CURLcode rv = cert_stuff(data, conn, sockindex,
SSL_SET_OPTION(primary.clientcert),
SSL_SET_OPTION(key));
if(rv) {
/* failf() is already done in cert_stuff() */
result = rv;
goto error;
}
}
/* store the nickname for SelectClientCert() called during handshake */
backend->client_nickname = nickname;
}
else
backend->client_nickname = NULL;
if(SSL_GetClientAuthDataHook(model, SelectClientCert,
(void *)connssl) != SECSuccess) {
result = CURLE_SSL_CERTPROBLEM;
goto error;
}
#ifndef CURL_DISABLE_PROXY
if(conn->proxy_ssl[sockindex].use) {
struct ssl_backend_data *proxy_backend;
proxy_backend = conn->proxy_ssl[sockindex].backend;
DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
DEBUGASSERT(proxy_backend);
DEBUGASSERT(proxy_backend->handle);
nspr_io = proxy_backend->handle;
second_layer = TRUE;
}
#endif
else {
/* wrap OS file descriptor by NSPR's file descriptor abstraction */
nspr_io = PR_ImportTCPSocket(sockfd);
if(!nspr_io)
goto error;
}
/* create our own NSPR I/O layer */
nspr_io_stub = PR_CreateIOLayerStub(nspr_io_identity, &nspr_io_methods);
if(!nspr_io_stub) {
if(!second_layer)
PR_Close(nspr_io);
goto error;
}
/* make the per-connection data accessible from NSPR I/O callbacks */
nspr_io_stub->secret = (void *)connssl;
/* push our new layer to the NSPR I/O stack */
if(PR_PushIOLayer(nspr_io, PR_TOP_IO_LAYER, nspr_io_stub) != PR_SUCCESS) {
if(!second_layer)
PR_Close(nspr_io);
PR_Close(nspr_io_stub);
goto error;
}
/* import our model socket onto the current I/O stack */
backend->handle = SSL_ImportFD(model, nspr_io);
if(!backend->handle) {
if(!second_layer)
PR_Close(nspr_io);
goto error;
}
PR_Close(model); /* We don't need this any more */
model = NULL;
/* This is the password associated with the cert that we're using */
if(SSL_SET_OPTION(key_passwd)) {
SSL_SetPKCS11PinArg(backend->handle, SSL_SET_OPTION(key_passwd));
}
#ifdef SSL_ENABLE_OCSP_STAPLING
if(SSL_CONN_CONFIG(verifystatus)) {
if(SSL_OptionSet(backend->handle, SSL_ENABLE_OCSP_STAPLING, PR_TRUE)
!= SECSuccess)
goto error;
}
#endif
#ifdef SSL_ENABLE_NPN
if(SSL_OptionSet(backend->handle, SSL_ENABLE_NPN, conn->bits.tls_enable_npn
? PR_TRUE : PR_FALSE) != SECSuccess)
goto error;
#endif
#ifdef SSL_ENABLE_ALPN
if(SSL_OptionSet(backend->handle, SSL_ENABLE_ALPN, conn->bits.tls_enable_alpn
? PR_TRUE : PR_FALSE) != SECSuccess)
goto error;
#endif
#if NSSVERNUM >= 0x030f04 /* 3.15.4 */
if(data->set.ssl.falsestart) {
if(SSL_OptionSet(backend->handle, SSL_ENABLE_FALSE_START, PR_TRUE)
!= SECSuccess)
goto error;
if(SSL_SetCanFalseStartCallback(backend->handle, CanFalseStartCallback,
data) != SECSuccess)
goto error;
}
#endif
#if defined(SSL_ENABLE_NPN) || defined(SSL_ENABLE_ALPN)
if(conn->bits.tls_enable_npn || conn->bits.tls_enable_alpn) {
int cur = 0;
unsigned char protocols[128];
#ifdef USE_HTTP2
if(data->state.httpwant >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
protocols[cur++] = ALPN_H2_LENGTH;
memcpy(&protocols[cur], ALPN_H2, ALPN_H2_LENGTH);
cur += ALPN_H2_LENGTH;
}
#endif
protocols[cur++] = ALPN_HTTP_1_1_LENGTH;
memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
cur += ALPN_HTTP_1_1_LENGTH;
if(SSL_SetNextProtoNego(backend->handle, protocols, cur) != SECSuccess)
goto error;
}
#endif
/* Force handshake on next I/O */
if(SSL_ResetHandshake(backend->handle, /* asServer */ PR_FALSE)
!= SECSuccess)
goto error;
/* propagate hostname to the TLS layer */
if(SSL_SetURL(backend->handle, snihost) != SECSuccess)
goto error;
/* prevent NSS from re-using the session for a different hostname */
if(SSL_SetSockPeerID(backend->handle, snihost) != SECSuccess)
goto error;
return CURLE_OK;
error:
if(model)
PR_Close(model);
return nss_fail_connect(connssl, data, result);
}
benchmarks/pairs/vfc/curl-cve-2022-27782-ossl_connect_step1/fixed.c
+688
View File
@@ -0,0 +1,688 @@
/* Provenance: curl/curl ossl_connect_step1 (fixed).
* repo: curl/curl
* commit: f18af4f874cecab82a9797e8c7541e0990c7a64c
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: ossl_connect_step1
* relpath: lib/vtls/openssl.c
*/
static CURLcode ossl_connect_step1(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
CURLcode result = CURLE_OK;
char *ciphers;
SSL_METHOD_QUAL SSL_METHOD *req_method = NULL;
X509_LOOKUP *lookup = NULL;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
ctx_option_t ctx_options = 0;
void *ssl_sessionid = NULL;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
bool sni;
const char * const hostname = SSL_HOST_NAME();
#ifdef ENABLE_IPV6
struct in6_addr addr;
#else
struct in_addr addr;
#endif
#endif
const long int ssl_version = SSL_CONN_CONFIG(version);
#ifdef USE_OPENSSL_SRP
const enum CURL_TLSAUTH ssl_authtype = SSL_SET_OPTION(primary.authtype);
#endif
char * const ssl_cert = SSL_SET_OPTION(primary.clientcert);
const struct curl_blob *ssl_cert_blob = SSL_SET_OPTION(primary.cert_blob);
const struct curl_blob *ca_info_blob = SSL_CONN_CONFIG(ca_info_blob);
const char * const ssl_cert_type = SSL_SET_OPTION(cert_type);
const char * const ssl_cafile =
/* CURLOPT_CAINFO_BLOB overrides CURLOPT_CAINFO */
(ca_info_blob ? NULL : SSL_CONN_CONFIG(CAfile));
const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
const char * const ssl_crlfile = SSL_SET_OPTION(primary.CRLfile);
char error_buffer[256];
struct ssl_backend_data *backend = connssl->backend;
bool imported_native_ca = false;
DEBUGASSERT(ssl_connect_1 == connssl->connecting_state);
DEBUGASSERT(backend);
/* Make funny stuff to get random input */
result = ossl_seed(data);
if(result)
return result;
SSL_SET_OPTION_LVALUE(certverifyresult) = !X509_V_OK;
/* check to see if we've been told to use an explicit SSL/TLS version */
switch(ssl_version) {
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1:
case CURL_SSLVERSION_TLSv1_0:
case CURL_SSLVERSION_TLSv1_1:
case CURL_SSLVERSION_TLSv1_2:
case CURL_SSLVERSION_TLSv1_3:
/* it will be handled later with the context options */
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L)
req_method = TLS_client_method();
#else
req_method = SSLv23_client_method();
#endif
use_sni(TRUE);
break;
case CURL_SSLVERSION_SSLv2:
failf(data, "No SSLv2 support");
return CURLE_NOT_BUILT_IN;
case CURL_SSLVERSION_SSLv3:
failf(data, "No SSLv3 support");
return CURLE_NOT_BUILT_IN;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
DEBUGASSERT(!backend->ctx);
backend->ctx = SSL_CTX_new(req_method);
if(!backend->ctx) {
failf(data, "SSL: couldn't create a context: %s",
ossl_strerror(ERR_peek_error(), error_buffer, sizeof(error_buffer)));
return CURLE_OUT_OF_MEMORY;
}
#ifdef SSL_MODE_RELEASE_BUFFERS
SSL_CTX_set_mode(backend->ctx, SSL_MODE_RELEASE_BUFFERS);
#endif
#ifdef SSL_CTRL_SET_MSG_CALLBACK
if(data->set.fdebug && data->set.verbose) {
/* the SSL trace callback is only used for verbose logging */
SSL_CTX_set_msg_callback(backend->ctx, ossl_trace);
SSL_CTX_set_msg_callback_arg(backend->ctx, conn);
set_logger(conn, data);
}
#endif
/* OpenSSL contains code to work around lots of bugs and flaws in various
SSL-implementations. SSL_CTX_set_options() is used to enabled those
work-arounds. The man page for this option states that SSL_OP_ALL enables
all the work-arounds and that "It is usually safe to use SSL_OP_ALL to
enable the bug workaround options if compatibility with somewhat broken
implementations is desired."
The "-no_ticket" option was introduced in OpenSSL 0.9.8j. It's a flag to
disable "rfc4507bis session ticket support". rfc4507bis was later turned
into the proper RFC5077: https://datatracker.ietf.org/doc/html/rfc5077
The enabled extension concerns the session management. I wonder how often
libcurl stops a connection and then resumes a TLS session. Also, sending
the session data is some overhead. I suggest that you just use your
proposed patch (which explicitly disables TICKET).
If someone writes an application with libcurl and OpenSSL who wants to
enable the feature, one can do this in the SSL callback.
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option enabling allowed proper
interoperability with web server Netscape Enterprise Server 2.0.1 which
was released back in 1996.
Due to CVE-2010-4180, option SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG has
become ineffective as of OpenSSL 0.9.8q and 1.0.0c. In order to mitigate
CVE-2010-4180 when using previous OpenSSL versions we no longer enable
this option regardless of OpenSSL version and SSL_OP_ALL definition.
OpenSSL added a work-around for a SSL 3.0/TLS 1.0 CBC vulnerability
(https://www.openssl.org/~bodo/tls-cbc.txt). In 0.9.6e they added a bit to
SSL_OP_ALL that _disables_ that work-around despite the fact that
SSL_OP_ALL is documented to do "rather harmless" workarounds. In order to
keep the secure work-around, the SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS bit
must not be set.
*/
ctx_options = SSL_OP_ALL;
#ifdef SSL_OP_NO_TICKET
ctx_options |= SSL_OP_NO_TICKET;
#endif
#ifdef SSL_OP_NO_COMPRESSION
ctx_options |= SSL_OP_NO_COMPRESSION;
#endif
#ifdef SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
/* mitigate CVE-2010-4180 */
ctx_options &= ~SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG;
#endif
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
/* unless the user explicitly asks to allow the protocol vulnerability we
use the work-around */
if(!SSL_SET_OPTION(enable_beast))
ctx_options &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;
#endif
switch(ssl_version) {
case CURL_SSLVERSION_SSLv2:
case CURL_SSLVERSION_SSLv3:
return CURLE_NOT_BUILT_IN;
/* "--tlsv<x.y>" options mean TLS >= version <x.y> */
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_0: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_1: /* TLS >= version 1.1 */
case CURL_SSLVERSION_TLSv1_2: /* TLS >= version 1.2 */
case CURL_SSLVERSION_TLSv1_3: /* TLS >= version 1.3 */
/* asking for any TLS version as the minimum, means no SSL versions
allowed */
ctx_options |= SSL_OP_NO_SSLv2;
ctx_options |= SSL_OP_NO_SSLv3;
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) /* 1.1.0 */
result = set_ssl_version_min_max(backend->ctx, conn);
#else
result = set_ssl_version_min_max_legacy(&ctx_options, data, conn,
sockindex);
#endif
if(result != CURLE_OK)
return result;
break;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
SSL_CTX_set_options(backend->ctx, ctx_options);
#ifdef HAS_NPN
if(conn->bits.tls_enable_npn)
SSL_CTX_set_next_proto_select_cb(backend->ctx, select_next_proto_cb, data);
#endif
#ifdef HAS_ALPN
if(conn->bits.tls_enable_alpn) {
int cur = 0;
unsigned char protocols[128];
#ifdef USE_HTTP2
if(data->state.httpwant >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
protocols[cur++] = ALPN_H2_LENGTH;
memcpy(&protocols[cur], ALPN_H2, ALPN_H2_LENGTH);
cur += ALPN_H2_LENGTH;
infof(data, VTLS_INFOF_ALPN_OFFER_1STR, ALPN_H2);
}
#endif
protocols[cur++] = ALPN_HTTP_1_1_LENGTH;
memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
cur += ALPN_HTTP_1_1_LENGTH;
infof(data, VTLS_INFOF_ALPN_OFFER_1STR, ALPN_HTTP_1_1);
/* expects length prefixed preference ordered list of protocols in wire
* format
*/
if(SSL_CTX_set_alpn_protos(backend->ctx, protocols, cur)) {
failf(data, "Error setting ALPN");
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif
if(ssl_cert || ssl_cert_blob || ssl_cert_type) {
if(!result &&
!cert_stuff(data, backend->ctx,
ssl_cert, ssl_cert_blob, ssl_cert_type,
SSL_SET_OPTION(key), SSL_SET_OPTION(key_blob),
SSL_SET_OPTION(key_type), SSL_SET_OPTION(key_passwd)))
result = CURLE_SSL_CERTPROBLEM;
if(result)
/* failf() is already done in cert_stuff() */
return result;
}
ciphers = SSL_CONN_CONFIG(cipher_list);
if(!ciphers)
ciphers = (char *)DEFAULT_CIPHER_SELECTION;
if(ciphers) {
if(!SSL_CTX_set_cipher_list(backend->ctx, ciphers)) {
failf(data, "failed setting cipher list: %s", ciphers);
return CURLE_SSL_CIPHER;
}
infof(data, "Cipher selection: %s", ciphers);
}
#ifdef HAVE_SSL_CTX_SET_CIPHERSUITES
{
char *ciphers13 = SSL_CONN_CONFIG(cipher_list13);
if(ciphers13) {
if(!SSL_CTX_set_ciphersuites(backend->ctx, ciphers13)) {
failf(data, "failed setting TLS 1.3 cipher suite: %s", ciphers13);
return CURLE_SSL_CIPHER;
}
infof(data, "TLS 1.3 cipher selection: %s", ciphers13);
}
}
#endif
#ifdef HAVE_SSL_CTX_SET_POST_HANDSHAKE_AUTH
/* OpenSSL 1.1.1 requires clients to opt-in for PHA */
SSL_CTX_set_post_handshake_auth(backend->ctx, 1);
#endif
#ifdef HAVE_SSL_CTX_SET_EC_CURVES
{
char *curves = SSL_CONN_CONFIG(curves);
if(curves) {
if(!SSL_CTX_set1_curves_list(backend->ctx, curves)) {
failf(data, "failed setting curves list: '%s'", curves);
return CURLE_SSL_CIPHER;
}
}
}
#endif
#ifdef USE_OPENSSL_SRP
if((ssl_authtype == CURL_TLSAUTH_SRP) &&
Curl_allow_auth_to_host(data)) {
char * const ssl_username = SSL_SET_OPTION(primary.username);
char * const ssl_password = SSL_SET_OPTION(primary.password);
infof(data, "Using TLS-SRP username: %s", ssl_username);
if(!SSL_CTX_set_srp_username(backend->ctx, ssl_username)) {
failf(data, "Unable to set SRP user name");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CTX_set_srp_password(backend->ctx, ssl_password)) {
failf(data, "failed setting SRP password");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CONN_CONFIG(cipher_list)) {
infof(data, "Setting cipher list SRP");
if(!SSL_CTX_set_cipher_list(backend->ctx, "SRP")) {
failf(data, "failed setting SRP cipher list");
return CURLE_SSL_CIPHER;
}
}
}
#endif
#if defined(USE_WIN32_CRYPTO)
/* Import certificates from the Windows root certificate store if requested.
https://stackoverflow.com/questions/9507184/
https://github.com/d3x0r/SACK/blob/master/src/netlib/ssl_layer.c#L1037
https://datatracker.ietf.org/doc/html/rfc5280 */
if((SSL_CONN_CONFIG(verifypeer) || SSL_CONN_CONFIG(verifyhost)) &&
(SSL_SET_OPTION(native_ca_store))) {
X509_STORE *store = SSL_CTX_get_cert_store(backend->ctx);
HCERTSTORE hStore = CertOpenSystemStore(0, TEXT("ROOT"));
if(hStore) {
PCCERT_CONTEXT pContext = NULL;
/* The array of enhanced key usage OIDs will vary per certificate and is
declared outside of the loop so that rather than malloc/free each
iteration we can grow it with realloc, when necessary. */
CERT_ENHKEY_USAGE *enhkey_usage = NULL;
DWORD enhkey_usage_size = 0;
/* This loop makes a best effort to import all valid certificates from
the MS root store. If a certificate cannot be imported it is skipped.
'result' is used to store only hard-fail conditions (such as out of
memory) that cause an early break. */
result = CURLE_OK;
for(;;) {
X509 *x509;
FILETIME now;
BYTE key_usage[2];
DWORD req_size;
const unsigned char *encoded_cert;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
char cert_name[256];
#endif
pContext = CertEnumCertificatesInStore(hStore, pContext);
if(!pContext)
break;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
if(!CertGetNameStringA(pContext, CERT_NAME_SIMPLE_DISPLAY_TYPE, 0,
NULL, cert_name, sizeof(cert_name))) {
strcpy(cert_name, "Unknown");
}
infof(data, "SSL: Checking cert \"%s\"", cert_name);
#endif
encoded_cert = (const unsigned char *)pContext->pbCertEncoded;
if(!encoded_cert)
continue;
GetSystemTimeAsFileTime(&now);
if(CompareFileTime(&pContext->pCertInfo->NotBefore, &now) > 0 ||
CompareFileTime(&now, &pContext->pCertInfo->NotAfter) > 0)
continue;
/* If key usage exists check for signing attribute */
if(CertGetIntendedKeyUsage(pContext->dwCertEncodingType,
pContext->pCertInfo,
key_usage, sizeof(key_usage))) {
if(!(key_usage[0] & CERT_KEY_CERT_SIGN_KEY_USAGE))
continue;
}
else if(GetLastError())
continue;
/* If enhanced key usage exists check for server auth attribute.
*
* Note "In a Microsoft environment, a certificate might also have EKU
* extended properties that specify valid uses for the certificate."
* The call below checks both, and behavior varies depending on what is
* found. For more details see CertGetEnhancedKeyUsage doc.
*/
if(CertGetEnhancedKeyUsage(pContext, 0, NULL, &req_size)) {
if(req_size && req_size > enhkey_usage_size) {
void *tmp = realloc(enhkey_usage, req_size);
if(!tmp) {
failf(data, "SSL: Out of memory allocating for OID list");
result = CURLE_OUT_OF_MEMORY;
break;
}
enhkey_usage = (CERT_ENHKEY_USAGE *)tmp;
enhkey_usage_size = req_size;
}
if(CertGetEnhancedKeyUsage(pContext, 0, enhkey_usage, &req_size)) {
if(!enhkey_usage->cUsageIdentifier) {
/* "If GetLastError returns CRYPT_E_NOT_FOUND, the certificate is
good for all uses. If it returns zero, the certificate has no
valid uses." */
if((HRESULT)GetLastError() != CRYPT_E_NOT_FOUND)
continue;
}
else {
DWORD i;
bool found = false;
for(i = 0; i < enhkey_usage->cUsageIdentifier; ++i) {
if(!strcmp("1.3.6.1.5.5.7.3.1" /* OID server auth */,
enhkey_usage->rgpszUsageIdentifier[i])) {
found = true;
break;
}
}
if(!found)
continue;
}
}
else
continue;
}
else
continue;
x509 = d2i_X509(NULL, &encoded_cert, pContext->cbCertEncoded);
if(!x509)
continue;
/* Try to import the certificate. This may fail for legitimate reasons
such as duplicate certificate, which is allowed by MS but not
OpenSSL. */
if(X509_STORE_add_cert(store, x509) == 1) {
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
infof(data, "SSL: Imported cert \"%s\"", cert_name);
#endif
imported_native_ca = true;
}
X509_free(x509);
}
free(enhkey_usage);
CertFreeCertificateContext(pContext);
CertCloseStore(hStore, 0);
if(result)
return result;
}
if(imported_native_ca)
infof(data, "successfully imported Windows CA store");
else
infof(data, "error importing Windows CA store, continuing anyway");
}
#endif
if(ca_info_blob) {
result = load_cacert_from_memory(backend->ctx, ca_info_blob);
if(result) {
if(result == CURLE_OUT_OF_MEMORY ||
(verifypeer && !imported_native_ca)) {
failf(data, "error importing CA certificate blob");
return result;
}
/* Only warn if no certificate verification is required. */
infof(data, "error importing CA certificate blob, continuing anyway");
}
}
if(verifypeer && !imported_native_ca && (ssl_cafile || ssl_capath)) {
#if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
/* OpenSSL 3.0.0 has deprecated SSL_CTX_load_verify_locations */
if(ssl_cafile &&
!SSL_CTX_load_verify_file(backend->ctx, ssl_cafile)) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate file: %s", ssl_cafile);
return CURLE_SSL_CACERT_BADFILE;
}
if(ssl_capath &&
!SSL_CTX_load_verify_dir(backend->ctx, ssl_capath)) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate path: %s", ssl_capath);
return CURLE_SSL_CACERT_BADFILE;
}
#else
/* tell OpenSSL where to find CA certificates that are used to verify the
server's certificate. */
if(!SSL_CTX_load_verify_locations(backend->ctx, ssl_cafile, ssl_capath)) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate verify locations:"
" CAfile: %s CApath: %s",
ssl_cafile ? ssl_cafile : "none",
ssl_capath ? ssl_capath : "none");
return CURLE_SSL_CACERT_BADFILE;
}
#endif
infof(data, " CAfile: %s", ssl_cafile ? ssl_cafile : "none");
infof(data, " CApath: %s", ssl_capath ? ssl_capath : "none");
}
#ifdef CURL_CA_FALLBACK
if(verifypeer &&
!ca_info_blob && !ssl_cafile && !ssl_capath && !imported_native_ca) {
/* verifying the peer without any CA certificates won't
work so use openssl's built-in default as fallback */
SSL_CTX_set_default_verify_paths(backend->ctx);
}
#endif
if(ssl_crlfile) {
/* tell OpenSSL where to find CRL file that is used to check certificate
* revocation */
lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(backend->ctx),
X509_LOOKUP_file());
if(!lookup ||
(!X509_load_crl_file(lookup, ssl_crlfile, X509_FILETYPE_PEM)) ) {
failf(data, "error loading CRL file: %s", ssl_crlfile);
return CURLE_SSL_CRL_BADFILE;
}
/* Everything is fine. */
infof(data, "successfully loaded CRL file:");
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
infof(data, " CRLfile: %s", ssl_crlfile);
}
if(verifypeer) {
/* Try building a chain using issuers in the trusted store first to avoid
problems with server-sent legacy intermediates. Newer versions of
OpenSSL do alternate chain checking by default but we do not know how to
determine that in a reliable manner.
https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest
*/
#if defined(X509_V_FLAG_TRUSTED_FIRST)
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_TRUSTED_FIRST);
#endif
#ifdef X509_V_FLAG_PARTIAL_CHAIN
if(!SSL_SET_OPTION(no_partialchain) && !ssl_crlfile) {
/* Have intermediate certificates in the trust store be treated as
trust-anchors, in the same way as self-signed root CA certificates
are. This allows users to verify servers using the intermediate cert
only, instead of needing the whole chain.
Due to OpenSSL bug https://github.com/openssl/openssl/issues/5081 we
cannot do partial chains with a CRL check.
*/
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_PARTIAL_CHAIN);
}
#endif
}
/* OpenSSL always tries to verify the peer, this only says whether it should
* fail to connect if the verification fails, or if it should continue
* anyway. In the latter case the result of the verification is checked with
* SSL_get_verify_result() below. */
SSL_CTX_set_verify(backend->ctx,
verifypeer ? SSL_VERIFY_PEER : SSL_VERIFY_NONE, NULL);
/* Enable logging of secrets to the file specified in env SSLKEYLOGFILE. */
#ifdef HAVE_KEYLOG_CALLBACK
if(Curl_tls_keylog_enabled()) {
SSL_CTX_set_keylog_callback(backend->ctx, ossl_keylog_callback);
}
#endif
/* Enable the session cache because it's a prerequisite for the "new session"
* callback. Use the "external storage" mode to prevent OpenSSL from creating
* an internal session cache.
*/
SSL_CTX_set_session_cache_mode(backend->ctx,
SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL);
SSL_CTX_sess_set_new_cb(backend->ctx, ossl_new_session_cb);
/* give application a chance to interfere with SSL set up. */
if(data->set.ssl.fsslctx) {
Curl_set_in_callback(data, true);
result = (*data->set.ssl.fsslctx)(data, backend->ctx,
data->set.ssl.fsslctxp);
Curl_set_in_callback(data, false);
if(result) {
failf(data, "error signaled by ssl ctx callback");
return result;
}
}
/* Let's make an SSL structure */
if(backend->handle)
SSL_free(backend->handle);
backend->handle = SSL_new(backend->ctx);
if(!backend->handle) {
failf(data, "SSL: couldn't create a context (handle)");
return CURLE_OUT_OF_MEMORY;
}
#if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
!defined(OPENSSL_NO_OCSP)
if(SSL_CONN_CONFIG(verifystatus))
SSL_set_tlsext_status_type(backend->handle, TLSEXT_STATUSTYPE_ocsp);
#endif
#if defined(OPENSSL_IS_BORINGSSL) && defined(ALLOW_RENEG)
SSL_set_renegotiate_mode(backend->handle, ssl_renegotiate_freely);
#endif
SSL_set_connect_state(backend->handle);
backend->server_cert = 0x0;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
if((0 == Curl_inet_pton(AF_INET, hostname, &addr)) &&
#ifdef ENABLE_IPV6
(0 == Curl_inet_pton(AF_INET6, hostname, &addr)) &&
#endif
sni) {
char *snihost = Curl_ssl_snihost(data, hostname, NULL);
if(!snihost || !SSL_set_tlsext_host_name(backend->handle, snihost)) {
failf(data, "Failed set SNI");
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif
if(!ossl_associate_connection(data, conn, sockindex)) {
/* Maybe the internal errors of SSL_get_ex_new_index or SSL_set_ex_data */
failf(data, "SSL: ossl_associate_connection failed: %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
if(SSL_SET_OPTION(primary.sessionid)) {
Curl_ssl_sessionid_lock(data);
if(!Curl_ssl_getsessionid(data, conn, SSL_IS_PROXY() ? TRUE : FALSE,
&ssl_sessionid, NULL, sockindex)) {
/* we got a session id, use it! */
if(!SSL_set_session(backend->handle, ssl_sessionid)) {
Curl_ssl_sessionid_unlock(data);
failf(data, "SSL: SSL_set_session failed: %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
/* Informational message */
infof(data, "SSL re-using session ID");
}
Curl_ssl_sessionid_unlock(data);
}
#ifndef CURL_DISABLE_PROXY
if(conn->proxy_ssl[sockindex].use) {
BIO *const bio = BIO_new(BIO_f_ssl());
struct ssl_backend_data *proxy_backend;
SSL* handle = NULL;
proxy_backend = conn->proxy_ssl[sockindex].backend;
DEBUGASSERT(proxy_backend);
handle = proxy_backend->handle;
DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
DEBUGASSERT(handle != NULL);
DEBUGASSERT(bio != NULL);
BIO_set_ssl(bio, handle, FALSE);
SSL_set_bio(backend->handle, bio, bio);
}
else
#endif
if(!SSL_set_fd(backend->handle, (int)sockfd)) {
/* pass the raw socket into the SSL layers */
failf(data, "SSL: SSL_set_fd failed: %s",
ossl_strerror(ERR_get_error(), error_buffer, sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
connssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-27782-ossl_connect_step1/vuln.c
+688
View File
@@ -0,0 +1,688 @@
/* Provenance: curl/curl ossl_connect_step1 (vuln).
* repo: curl/curl
* commit: 7e92d12b4e6911f424678a133b19de670e183a59
* parent: 7e92d12b4e6911f424678a133b19de670e183a59
* commit_url: https://github.com/curl/curl/commit/f18af4f874cecab82a9797e8c7541e0990c7a64c
* cve: CVE-2022-27782
* license: curl
* function: ossl_connect_step1
* relpath: lib/vtls/openssl.c
*/
static CURLcode ossl_connect_step1(struct Curl_easy *data,
struct connectdata *conn, int sockindex)
{
CURLcode result = CURLE_OK;
char *ciphers;
SSL_METHOD_QUAL SSL_METHOD *req_method = NULL;
X509_LOOKUP *lookup = NULL;
curl_socket_t sockfd = conn->sock[sockindex];
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
ctx_option_t ctx_options = 0;
void *ssl_sessionid = NULL;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
bool sni;
const char * const hostname = SSL_HOST_NAME();
#ifdef ENABLE_IPV6
struct in6_addr addr;
#else
struct in_addr addr;
#endif
#endif
const long int ssl_version = SSL_CONN_CONFIG(version);
#ifdef USE_OPENSSL_SRP
const enum CURL_TLSAUTH ssl_authtype = SSL_SET_OPTION(authtype);
#endif
char * const ssl_cert = SSL_SET_OPTION(primary.clientcert);
const struct curl_blob *ssl_cert_blob = SSL_SET_OPTION(primary.cert_blob);
const struct curl_blob *ca_info_blob = SSL_CONN_CONFIG(ca_info_blob);
const char * const ssl_cert_type = SSL_SET_OPTION(cert_type);
const char * const ssl_cafile =
/* CURLOPT_CAINFO_BLOB overrides CURLOPT_CAINFO */
(ca_info_blob ? NULL : SSL_CONN_CONFIG(CAfile));
const char * const ssl_capath = SSL_CONN_CONFIG(CApath);
const bool verifypeer = SSL_CONN_CONFIG(verifypeer);
const char * const ssl_crlfile = SSL_SET_OPTION(CRLfile);
char error_buffer[256];
struct ssl_backend_data *backend = connssl->backend;
bool imported_native_ca = false;
DEBUGASSERT(ssl_connect_1 == connssl->connecting_state);
DEBUGASSERT(backend);
/* Make funny stuff to get random input */
result = ossl_seed(data);
if(result)
return result;
SSL_SET_OPTION_LVALUE(certverifyresult) = !X509_V_OK;
/* check to see if we've been told to use an explicit SSL/TLS version */
switch(ssl_version) {
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1:
case CURL_SSLVERSION_TLSv1_0:
case CURL_SSLVERSION_TLSv1_1:
case CURL_SSLVERSION_TLSv1_2:
case CURL_SSLVERSION_TLSv1_3:
/* it will be handled later with the context options */
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L)
req_method = TLS_client_method();
#else
req_method = SSLv23_client_method();
#endif
use_sni(TRUE);
break;
case CURL_SSLVERSION_SSLv2:
failf(data, "No SSLv2 support");
return CURLE_NOT_BUILT_IN;
case CURL_SSLVERSION_SSLv3:
failf(data, "No SSLv3 support");
return CURLE_NOT_BUILT_IN;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
DEBUGASSERT(!backend->ctx);
backend->ctx = SSL_CTX_new(req_method);
if(!backend->ctx) {
failf(data, "SSL: couldn't create a context: %s",
ossl_strerror(ERR_peek_error(), error_buffer, sizeof(error_buffer)));
return CURLE_OUT_OF_MEMORY;
}
#ifdef SSL_MODE_RELEASE_BUFFERS
SSL_CTX_set_mode(backend->ctx, SSL_MODE_RELEASE_BUFFERS);
#endif
#ifdef SSL_CTRL_SET_MSG_CALLBACK
if(data->set.fdebug && data->set.verbose) {
/* the SSL trace callback is only used for verbose logging */
SSL_CTX_set_msg_callback(backend->ctx, ossl_trace);
SSL_CTX_set_msg_callback_arg(backend->ctx, conn);
set_logger(conn, data);
}
#endif
/* OpenSSL contains code to work around lots of bugs and flaws in various
SSL-implementations. SSL_CTX_set_options() is used to enabled those
work-arounds. The man page for this option states that SSL_OP_ALL enables
all the work-arounds and that "It is usually safe to use SSL_OP_ALL to
enable the bug workaround options if compatibility with somewhat broken
implementations is desired."
The "-no_ticket" option was introduced in OpenSSL 0.9.8j. It's a flag to
disable "rfc4507bis session ticket support". rfc4507bis was later turned
into the proper RFC5077: https://datatracker.ietf.org/doc/html/rfc5077
The enabled extension concerns the session management. I wonder how often
libcurl stops a connection and then resumes a TLS session. Also, sending
the session data is some overhead. I suggest that you just use your
proposed patch (which explicitly disables TICKET).
If someone writes an application with libcurl and OpenSSL who wants to
enable the feature, one can do this in the SSL callback.
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option enabling allowed proper
interoperability with web server Netscape Enterprise Server 2.0.1 which
was released back in 1996.
Due to CVE-2010-4180, option SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG has
become ineffective as of OpenSSL 0.9.8q and 1.0.0c. In order to mitigate
CVE-2010-4180 when using previous OpenSSL versions we no longer enable
this option regardless of OpenSSL version and SSL_OP_ALL definition.
OpenSSL added a work-around for a SSL 3.0/TLS 1.0 CBC vulnerability
(https://www.openssl.org/~bodo/tls-cbc.txt). In 0.9.6e they added a bit to
SSL_OP_ALL that _disables_ that work-around despite the fact that
SSL_OP_ALL is documented to do "rather harmless" workarounds. In order to
keep the secure work-around, the SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS bit
must not be set.
*/
ctx_options = SSL_OP_ALL;
#ifdef SSL_OP_NO_TICKET
ctx_options |= SSL_OP_NO_TICKET;
#endif
#ifdef SSL_OP_NO_COMPRESSION
ctx_options |= SSL_OP_NO_COMPRESSION;
#endif
#ifdef SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
/* mitigate CVE-2010-4180 */
ctx_options &= ~SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG;
#endif
#ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
/* unless the user explicitly asks to allow the protocol vulnerability we
use the work-around */
if(!SSL_SET_OPTION(enable_beast))
ctx_options &= ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS;
#endif
switch(ssl_version) {
case CURL_SSLVERSION_SSLv2:
case CURL_SSLVERSION_SSLv3:
return CURLE_NOT_BUILT_IN;
/* "--tlsv<x.y>" options mean TLS >= version <x.y> */
case CURL_SSLVERSION_DEFAULT:
case CURL_SSLVERSION_TLSv1: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_0: /* TLS >= version 1.0 */
case CURL_SSLVERSION_TLSv1_1: /* TLS >= version 1.1 */
case CURL_SSLVERSION_TLSv1_2: /* TLS >= version 1.2 */
case CURL_SSLVERSION_TLSv1_3: /* TLS >= version 1.3 */
/* asking for any TLS version as the minimum, means no SSL versions
allowed */
ctx_options |= SSL_OP_NO_SSLv2;
ctx_options |= SSL_OP_NO_SSLv3;
#if (OPENSSL_VERSION_NUMBER >= 0x10100000L) /* 1.1.0 */
result = set_ssl_version_min_max(backend->ctx, conn);
#else
result = set_ssl_version_min_max_legacy(&ctx_options, data, conn,
sockindex);
#endif
if(result != CURLE_OK)
return result;
break;
default:
failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
return CURLE_SSL_CONNECT_ERROR;
}
SSL_CTX_set_options(backend->ctx, ctx_options);
#ifdef HAS_NPN
if(conn->bits.tls_enable_npn)
SSL_CTX_set_next_proto_select_cb(backend->ctx, select_next_proto_cb, data);
#endif
#ifdef HAS_ALPN
if(conn->bits.tls_enable_alpn) {
int cur = 0;
unsigned char protocols[128];
#ifdef USE_HTTP2
if(data->state.httpwant >= CURL_HTTP_VERSION_2
#ifndef CURL_DISABLE_PROXY
&& (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)
#endif
) {
protocols[cur++] = ALPN_H2_LENGTH;
memcpy(&protocols[cur], ALPN_H2, ALPN_H2_LENGTH);
cur += ALPN_H2_LENGTH;
infof(data, VTLS_INFOF_ALPN_OFFER_1STR, ALPN_H2);
}
#endif
protocols[cur++] = ALPN_HTTP_1_1_LENGTH;
memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
cur += ALPN_HTTP_1_1_LENGTH;
infof(data, VTLS_INFOF_ALPN_OFFER_1STR, ALPN_HTTP_1_1);
/* expects length prefixed preference ordered list of protocols in wire
* format
*/
if(SSL_CTX_set_alpn_protos(backend->ctx, protocols, cur)) {
failf(data, "Error setting ALPN");
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif
if(ssl_cert || ssl_cert_blob || ssl_cert_type) {
if(!result &&
!cert_stuff(data, backend->ctx,
ssl_cert, ssl_cert_blob, ssl_cert_type,
SSL_SET_OPTION(key), SSL_SET_OPTION(key_blob),
SSL_SET_OPTION(key_type), SSL_SET_OPTION(key_passwd)))
result = CURLE_SSL_CERTPROBLEM;
if(result)
/* failf() is already done in cert_stuff() */
return result;
}
ciphers = SSL_CONN_CONFIG(cipher_list);
if(!ciphers)
ciphers = (char *)DEFAULT_CIPHER_SELECTION;
if(ciphers) {
if(!SSL_CTX_set_cipher_list(backend->ctx, ciphers)) {
failf(data, "failed setting cipher list: %s", ciphers);
return CURLE_SSL_CIPHER;
}
infof(data, "Cipher selection: %s", ciphers);
}
#ifdef HAVE_SSL_CTX_SET_CIPHERSUITES
{
char *ciphers13 = SSL_CONN_CONFIG(cipher_list13);
if(ciphers13) {
if(!SSL_CTX_set_ciphersuites(backend->ctx, ciphers13)) {
failf(data, "failed setting TLS 1.3 cipher suite: %s", ciphers13);
return CURLE_SSL_CIPHER;
}
infof(data, "TLS 1.3 cipher selection: %s", ciphers13);
}
}
#endif
#ifdef HAVE_SSL_CTX_SET_POST_HANDSHAKE_AUTH
/* OpenSSL 1.1.1 requires clients to opt-in for PHA */
SSL_CTX_set_post_handshake_auth(backend->ctx, 1);
#endif
#ifdef HAVE_SSL_CTX_SET_EC_CURVES
{
char *curves = SSL_CONN_CONFIG(curves);
if(curves) {
if(!SSL_CTX_set1_curves_list(backend->ctx, curves)) {
failf(data, "failed setting curves list: '%s'", curves);
return CURLE_SSL_CIPHER;
}
}
}
#endif
#ifdef USE_OPENSSL_SRP
if((ssl_authtype == CURL_TLSAUTH_SRP) &&
Curl_allow_auth_to_host(data)) {
char * const ssl_username = SSL_SET_OPTION(username);
infof(data, "Using TLS-SRP username: %s", ssl_username);
if(!SSL_CTX_set_srp_username(backend->ctx, ssl_username)) {
failf(data, "Unable to set SRP user name");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CTX_set_srp_password(backend->ctx, SSL_SET_OPTION(password))) {
failf(data, "failed setting SRP password");
return CURLE_BAD_FUNCTION_ARGUMENT;
}
if(!SSL_CONN_CONFIG(cipher_list)) {
infof(data, "Setting cipher list SRP");
if(!SSL_CTX_set_cipher_list(backend->ctx, "SRP")) {
failf(data, "failed setting SRP cipher list");
return CURLE_SSL_CIPHER;
}
}
}
#endif
#if defined(USE_WIN32_CRYPTO)
/* Import certificates from the Windows root certificate store if requested.
https://stackoverflow.com/questions/9507184/
https://github.com/d3x0r/SACK/blob/master/src/netlib/ssl_layer.c#L1037
https://datatracker.ietf.org/doc/html/rfc5280 */
if((SSL_CONN_CONFIG(verifypeer) || SSL_CONN_CONFIG(verifyhost)) &&
(SSL_SET_OPTION(native_ca_store))) {
X509_STORE *store = SSL_CTX_get_cert_store(backend->ctx);
HCERTSTORE hStore = CertOpenSystemStore(0, TEXT("ROOT"));
if(hStore) {
PCCERT_CONTEXT pContext = NULL;
/* The array of enhanced key usage OIDs will vary per certificate and is
declared outside of the loop so that rather than malloc/free each
iteration we can grow it with realloc, when necessary. */
CERT_ENHKEY_USAGE *enhkey_usage = NULL;
DWORD enhkey_usage_size = 0;
/* This loop makes a best effort to import all valid certificates from
the MS root store. If a certificate cannot be imported it is skipped.
'result' is used to store only hard-fail conditions (such as out of
memory) that cause an early break. */
result = CURLE_OK;
for(;;) {
X509 *x509;
FILETIME now;
BYTE key_usage[2];
DWORD req_size;
const unsigned char *encoded_cert;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
char cert_name[256];
#endif
pContext = CertEnumCertificatesInStore(hStore, pContext);
if(!pContext)
break;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
if(!CertGetNameStringA(pContext, CERT_NAME_SIMPLE_DISPLAY_TYPE, 0,
NULL, cert_name, sizeof(cert_name))) {
strcpy(cert_name, "Unknown");
}
infof(data, "SSL: Checking cert \"%s\"", cert_name);
#endif
encoded_cert = (const unsigned char *)pContext->pbCertEncoded;
if(!encoded_cert)
continue;
GetSystemTimeAsFileTime(&now);
if(CompareFileTime(&pContext->pCertInfo->NotBefore, &now) > 0 ||
CompareFileTime(&now, &pContext->pCertInfo->NotAfter) > 0)
continue;
/* If key usage exists check for signing attribute */
if(CertGetIntendedKeyUsage(pContext->dwCertEncodingType,
pContext->pCertInfo,
key_usage, sizeof(key_usage))) {
if(!(key_usage[0] & CERT_KEY_CERT_SIGN_KEY_USAGE))
continue;
}
else if(GetLastError())
continue;
/* If enhanced key usage exists check for server auth attribute.
*
* Note "In a Microsoft environment, a certificate might also have EKU
* extended properties that specify valid uses for the certificate."
* The call below checks both, and behavior varies depending on what is
* found. For more details see CertGetEnhancedKeyUsage doc.
*/
if(CertGetEnhancedKeyUsage(pContext, 0, NULL, &req_size)) {
if(req_size && req_size > enhkey_usage_size) {
void *tmp = realloc(enhkey_usage, req_size);
if(!tmp) {
failf(data, "SSL: Out of memory allocating for OID list");
result = CURLE_OUT_OF_MEMORY;
break;
}
enhkey_usage = (CERT_ENHKEY_USAGE *)tmp;
enhkey_usage_size = req_size;
}
if(CertGetEnhancedKeyUsage(pContext, 0, enhkey_usage, &req_size)) {
if(!enhkey_usage->cUsageIdentifier) {
/* "If GetLastError returns CRYPT_E_NOT_FOUND, the certificate is
good for all uses. If it returns zero, the certificate has no
valid uses." */
if((HRESULT)GetLastError() != CRYPT_E_NOT_FOUND)
continue;
}
else {
DWORD i;
bool found = false;
for(i = 0; i < enhkey_usage->cUsageIdentifier; ++i) {
if(!strcmp("1.3.6.1.5.5.7.3.1" /* OID server auth */,
enhkey_usage->rgpszUsageIdentifier[i])) {
found = true;
break;
}
}
if(!found)
continue;
}
}
else
continue;
}
else
continue;
x509 = d2i_X509(NULL, &encoded_cert, pContext->cbCertEncoded);
if(!x509)
continue;
/* Try to import the certificate. This may fail for legitimate reasons
such as duplicate certificate, which is allowed by MS but not
OpenSSL. */
if(X509_STORE_add_cert(store, x509) == 1) {
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
infof(data, "SSL: Imported cert \"%s\"", cert_name);
#endif
imported_native_ca = true;
}
X509_free(x509);
}
free(enhkey_usage);
CertFreeCertificateContext(pContext);
CertCloseStore(hStore, 0);
if(result)
return result;
}
if(imported_native_ca)
infof(data, "successfully imported Windows CA store");
else
infof(data, "error importing Windows CA store, continuing anyway");
}
#endif
if(ca_info_blob) {
result = load_cacert_from_memory(backend->ctx, ca_info_blob);
if(result) {
if(result == CURLE_OUT_OF_MEMORY ||
(verifypeer && !imported_native_ca)) {
failf(data, "error importing CA certificate blob");
return result;
}
/* Only warn if no certificate verification is required. */
infof(data, "error importing CA certificate blob, continuing anyway");
}
}
if(verifypeer && !imported_native_ca && (ssl_cafile || ssl_capath)) {
#if defined(OPENSSL_VERSION_MAJOR) && (OPENSSL_VERSION_MAJOR >= 3)
/* OpenSSL 3.0.0 has deprecated SSL_CTX_load_verify_locations */
if(ssl_cafile &&
!SSL_CTX_load_verify_file(backend->ctx, ssl_cafile)) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate file: %s", ssl_cafile);
return CURLE_SSL_CACERT_BADFILE;
}
if(ssl_capath &&
!SSL_CTX_load_verify_dir(backend->ctx, ssl_capath)) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate path: %s", ssl_capath);
return CURLE_SSL_CACERT_BADFILE;
}
#else
/* tell OpenSSL where to find CA certificates that are used to verify the
server's certificate. */
if(!SSL_CTX_load_verify_locations(backend->ctx, ssl_cafile, ssl_capath)) {
/* Fail if we insist on successfully verifying the server. */
failf(data, "error setting certificate verify locations:"
" CAfile: %s CApath: %s",
ssl_cafile ? ssl_cafile : "none",
ssl_capath ? ssl_capath : "none");
return CURLE_SSL_CACERT_BADFILE;
}
#endif
infof(data, " CAfile: %s", ssl_cafile ? ssl_cafile : "none");
infof(data, " CApath: %s", ssl_capath ? ssl_capath : "none");
}
#ifdef CURL_CA_FALLBACK
if(verifypeer &&
!ca_info_blob && !ssl_cafile && !ssl_capath && !imported_native_ca) {
/* verifying the peer without any CA certificates won't
work so use openssl's built-in default as fallback */
SSL_CTX_set_default_verify_paths(backend->ctx);
}
#endif
if(ssl_crlfile) {
/* tell OpenSSL where to find CRL file that is used to check certificate
* revocation */
lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(backend->ctx),
X509_LOOKUP_file());
if(!lookup ||
(!X509_load_crl_file(lookup, ssl_crlfile, X509_FILETYPE_PEM)) ) {
failf(data, "error loading CRL file: %s", ssl_crlfile);
return CURLE_SSL_CRL_BADFILE;
}
/* Everything is fine. */
infof(data, "successfully loaded CRL file:");
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
infof(data, " CRLfile: %s", ssl_crlfile);
}
if(verifypeer) {
/* Try building a chain using issuers in the trusted store first to avoid
problems with server-sent legacy intermediates. Newer versions of
OpenSSL do alternate chain checking by default but we do not know how to
determine that in a reliable manner.
https://rt.openssl.org/Ticket/Display.html?id=3621&user=guest&pass=guest
*/
#if defined(X509_V_FLAG_TRUSTED_FIRST)
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_TRUSTED_FIRST);
#endif
#ifdef X509_V_FLAG_PARTIAL_CHAIN
if(!SSL_SET_OPTION(no_partialchain) && !ssl_crlfile) {
/* Have intermediate certificates in the trust store be treated as
trust-anchors, in the same way as self-signed root CA certificates
are. This allows users to verify servers using the intermediate cert
only, instead of needing the whole chain.
Due to OpenSSL bug https://github.com/openssl/openssl/issues/5081 we
cannot do partial chains with a CRL check.
*/
X509_STORE_set_flags(SSL_CTX_get_cert_store(backend->ctx),
X509_V_FLAG_PARTIAL_CHAIN);
}
#endif
}
/* OpenSSL always tries to verify the peer, this only says whether it should
* fail to connect if the verification fails, or if it should continue
* anyway. In the latter case the result of the verification is checked with
* SSL_get_verify_result() below. */
SSL_CTX_set_verify(backend->ctx,
verifypeer ? SSL_VERIFY_PEER : SSL_VERIFY_NONE, NULL);
/* Enable logging of secrets to the file specified in env SSLKEYLOGFILE. */
#ifdef HAVE_KEYLOG_CALLBACK
if(Curl_tls_keylog_enabled()) {
SSL_CTX_set_keylog_callback(backend->ctx, ossl_keylog_callback);
}
#endif
/* Enable the session cache because it's a prerequisite for the "new session"
* callback. Use the "external storage" mode to prevent OpenSSL from creating
* an internal session cache.
*/
SSL_CTX_set_session_cache_mode(backend->ctx,
SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL);
SSL_CTX_sess_set_new_cb(backend->ctx, ossl_new_session_cb);
/* give application a chance to interfere with SSL set up. */
if(data->set.ssl.fsslctx) {
Curl_set_in_callback(data, true);
result = (*data->set.ssl.fsslctx)(data, backend->ctx,
data->set.ssl.fsslctxp);
Curl_set_in_callback(data, false);
if(result) {
failf(data, "error signaled by ssl ctx callback");
return result;
}
}
/* Let's make an SSL structure */
if(backend->handle)
SSL_free(backend->handle);
backend->handle = SSL_new(backend->ctx);
if(!backend->handle) {
failf(data, "SSL: couldn't create a context (handle)");
return CURLE_OUT_OF_MEMORY;
}
#if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
!defined(OPENSSL_NO_OCSP)
if(SSL_CONN_CONFIG(verifystatus))
SSL_set_tlsext_status_type(backend->handle, TLSEXT_STATUSTYPE_ocsp);
#endif
#if defined(OPENSSL_IS_BORINGSSL) && defined(ALLOW_RENEG)
SSL_set_renegotiate_mode(backend->handle, ssl_renegotiate_freely);
#endif
SSL_set_connect_state(backend->handle);
backend->server_cert = 0x0;
#ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
if((0 == Curl_inet_pton(AF_INET, hostname, &addr)) &&
#ifdef ENABLE_IPV6
(0 == Curl_inet_pton(AF_INET6, hostname, &addr)) &&
#endif
sni) {
char *snihost = Curl_ssl_snihost(data, hostname, NULL);
if(!snihost || !SSL_set_tlsext_host_name(backend->handle, snihost)) {
failf(data, "Failed set SNI");
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif
if(!ossl_associate_connection(data, conn, sockindex)) {
/* Maybe the internal errors of SSL_get_ex_new_index or SSL_set_ex_data */
failf(data, "SSL: ossl_associate_connection failed: %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
if(SSL_SET_OPTION(primary.sessionid)) {
Curl_ssl_sessionid_lock(data);
if(!Curl_ssl_getsessionid(data, conn, SSL_IS_PROXY() ? TRUE : FALSE,
&ssl_sessionid, NULL, sockindex)) {
/* we got a session id, use it! */
if(!SSL_set_session(backend->handle, ssl_sessionid)) {
Curl_ssl_sessionid_unlock(data);
failf(data, "SSL: SSL_set_session failed: %s",
ossl_strerror(ERR_get_error(), error_buffer,
sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
/* Informational message */
infof(data, "SSL re-using session ID");
}
Curl_ssl_sessionid_unlock(data);
}
#ifndef CURL_DISABLE_PROXY
if(conn->proxy_ssl[sockindex].use) {
BIO *const bio = BIO_new(BIO_f_ssl());
struct ssl_backend_data *proxy_backend;
SSL* handle = NULL;
proxy_backend = conn->proxy_ssl[sockindex].backend;
DEBUGASSERT(proxy_backend);
handle = proxy_backend->handle;
DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
DEBUGASSERT(handle != NULL);
DEBUGASSERT(bio != NULL);
BIO_set_ssl(bio, handle, FALSE);
SSL_set_bio(backend->handle, bio, bio);
}
else
#endif
if(!SSL_set_fd(backend->handle, (int)sockfd)) {
/* pass the raw socket into the SSL layers */
failf(data, "SSL: SSL_set_fd failed: %s",
ossl_strerror(ERR_get_error(), error_buffer, sizeof(error_buffer)));
return CURLE_SSL_CONNECT_ERROR;
}
connssl->connecting_state = ssl_connect_2;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-30115/fixed.c
+39
View File
@@ -0,0 +1,39 @@
/* Provenance: curl/curl hsts_create (fixed).
* repo: curl/curl
* commit: fae6fea209a2d4db1582f608bd8cc8000721733a
* parent: ff3ee510c328db03bf171cae6179bb9463fb054f
* commit_url: https://github.com/curl/curl/commit/fae6fea209a2d4db1582f608bd8cc8000721733a
* cve: CVE-2022-30115
* license: curl
* function: hsts_create
* relpath: lib/hsts.c
*/
static CURLcode hsts_create(struct hsts *h,
const char *hostname,
bool subdomains,
curl_off_t expires)
{
struct stsentry *sts = hsts_entry();
char *duphost;
size_t hlen;
if(!sts)
return CURLE_OUT_OF_MEMORY;
duphost = strdup(hostname);
if(!duphost) {
free(sts);
return CURLE_OUT_OF_MEMORY;
}
hlen = strlen(duphost);
if(duphost[hlen - 1] == '.')
/* strip off trailing any dot */
duphost[--hlen] = 0;
sts->host = duphost;
sts->expires = expires;
sts->includeSubDomains = subdomains;
Curl_llist_insert_next(&h->list, h->list.tail, sts, &sts->node);
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-30115/vuln.c
+30
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@@ -0,0 +1,30 @@
/* Provenance: curl/curl hsts_create (vuln).
* repo: curl/curl
* commit: ff3ee510c328db03bf171cae6179bb9463fb054f
* parent: ff3ee510c328db03bf171cae6179bb9463fb054f
* commit_url: https://github.com/curl/curl/commit/fae6fea209a2d4db1582f608bd8cc8000721733a
* cve: CVE-2022-30115
* license: curl
* function: hsts_create
* relpath: lib/hsts.c
*/
static CURLcode hsts_create(struct hsts *h,
const char *hostname,
bool subdomains,
curl_off_t expires)
{
struct stsentry *sts = hsts_entry();
if(!sts)
return CURLE_OUT_OF_MEMORY;
sts->expires = expires;
sts->includeSubDomains = subdomains;
sts->host = strdup(hostname);
if(!sts->host) {
free(sts);
return CURLE_OUT_OF_MEMORY;
}
Curl_llist_insert_next(&h->list, h->list.tail, sts, &sts->node);
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-32206/fixed.c
+65
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@@ -0,0 +1,65 @@
/* Provenance: curl/curl Curl_build_unencoding_stack (fixed).
* repo: curl/curl
* commit: 3a09fbb7f264c67c438d01a30669ce325aa508e2
* parent: 6ecdf5136b52af747e7bda08db9a748256b1cd09
* commit_url: https://github.com/curl/curl/commit/3a09fbb7f264c67c438d01a30669ce325aa508e2
* cve: CVE-2022-32206
* license: curl
* function: Curl_build_unencoding_stack
* relpath: lib/content_encoding.c
*/
CURLcode Curl_build_unencoding_stack(struct Curl_easy *data,
const char *enclist, int maybechunked)
{
struct SingleRequest *k = &data->req;
int counter = 0;
do {
const char *name;
size_t namelen;
/* Parse a single encoding name. */
while(ISSPACE(*enclist) || *enclist == ',')
enclist++;
name = enclist;
for(namelen = 0; *enclist && *enclist != ','; enclist++)
if(!ISSPACE(*enclist))
namelen = enclist - name + 1;
/* Special case: chunked encoding is handled at the reader level. */
if(maybechunked && namelen == 7 && strncasecompare(name, "chunked", 7)) {
k->chunk = TRUE; /* chunks coming our way. */
Curl_httpchunk_init(data); /* init our chunky engine. */
}
else if(namelen) {
const struct content_encoding *encoding = find_encoding(name, namelen);
struct contenc_writer *writer;
if(!k->writer_stack) {
k->writer_stack = new_unencoding_writer(data, &client_encoding, NULL);
if(!k->writer_stack)
return CURLE_OUT_OF_MEMORY;
}
if(!encoding)
encoding = &error_encoding; /* Defer error at stack use. */
if(++counter >= MAX_ENCODE_STACK) {
failf(data, "Reject response due to %u content encodings",
counter);
return CURLE_BAD_CONTENT_ENCODING;
}
/* Stack the unencoding stage. */
writer = new_unencoding_writer(data, encoding, k->writer_stack);
if(!writer)
return CURLE_OUT_OF_MEMORY;
k->writer_stack = writer;
}
} while(*enclist);
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-32206/vuln.c
+59
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@@ -0,0 +1,59 @@
/* Provenance: curl/curl Curl_build_unencoding_stack (vuln).
* repo: curl/curl
* commit: 6ecdf5136b52af747e7bda08db9a748256b1cd09
* parent: 6ecdf5136b52af747e7bda08db9a748256b1cd09
* commit_url: https://github.com/curl/curl/commit/3a09fbb7f264c67c438d01a30669ce325aa508e2
* cve: CVE-2022-32206
* license: curl
* function: Curl_build_unencoding_stack
* relpath: lib/content_encoding.c
*/
CURLcode Curl_build_unencoding_stack(struct Curl_easy *data,
const char *enclist, int maybechunked)
{
struct SingleRequest *k = &data->req;
do {
const char *name;
size_t namelen;
/* Parse a single encoding name. */
while(ISSPACE(*enclist) || *enclist == ',')
enclist++;
name = enclist;
for(namelen = 0; *enclist && *enclist != ','; enclist++)
if(!ISSPACE(*enclist))
namelen = enclist - name + 1;
/* Special case: chunked encoding is handled at the reader level. */
if(maybechunked && namelen == 7 && strncasecompare(name, "chunked", 7)) {
k->chunk = TRUE; /* chunks coming our way. */
Curl_httpchunk_init(data); /* init our chunky engine. */
}
else if(namelen) {
const struct content_encoding *encoding = find_encoding(name, namelen);
struct contenc_writer *writer;
if(!k->writer_stack) {
k->writer_stack = new_unencoding_writer(data, &client_encoding, NULL);
if(!k->writer_stack)
return CURLE_OUT_OF_MEMORY;
}
if(!encoding)
encoding = &error_encoding; /* Defer error at stack use. */
/* Stack the unencoding stage. */
writer = new_unencoding_writer(data, encoding, k->writer_stack);
if(!writer)
return CURLE_OUT_OF_MEMORY;
k->writer_stack = writer;
}
} while(*enclist);
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-32207/fixed.c
+110
View File
@@ -0,0 +1,110 @@
/* Provenance: curl/curl cookie_output (fixed).
* repo: curl/curl
* commit: 20f9dd6bae50b7223171b17ba7798946e74f877f
* parent: 46f8911d3942dc06fdd67e9f6f3908982e5d2fb4
* commit_url: https://github.com/curl/curl/commit/20f9dd6bae50b7223171b17ba7798946e74f877f
* cve: CVE-2022-32207
* license: curl
* function: cookie_output
* relpath: lib/cookie.c
*/
* cookie_output()
*
* Writes all internally known cookies to the specified file. Specify
* "-" as file name to write to stdout.
*
* The function returns non-zero on write failure.
*/
static CURLcode cookie_output(struct Curl_easy *data,
struct CookieInfo *c, const char *filename)
{
struct Cookie *co;
FILE *out = NULL;
bool use_stdout = FALSE;
char *tempstore = NULL;
CURLcode error = CURLE_OK;
if(!c)
/* no cookie engine alive */
return CURLE_OK;
/* at first, remove expired cookies */
remove_expired(c);
if(!strcmp("-", filename)) {
/* use stdout */
out = stdout;
use_stdout = TRUE;
}
else {
error = Curl_fopen(data, filename, &out, &tempstore);
if(error)
goto error;
}
fputs("# Netscape HTTP Cookie File\n"
"# https://curl.se/docs/http-cookies.html\n"
"# This file was generated by libcurl! Edit at your own risk.\n\n",
out);
if(c->numcookies) {
unsigned int i;
size_t nvalid = 0;
struct Cookie **array;
array = calloc(1, sizeof(struct Cookie *) * c->numcookies);
if(!array) {
error = CURLE_OUT_OF_MEMORY;
goto error;
}
/* only sort the cookies with a domain property */
for(i = 0; i < COOKIE_HASH_SIZE; i++) {
for(co = c->cookies[i]; co; co = co->next) {
if(!co->domain)
continue;
array[nvalid++] = co;
}
}
qsort(array, nvalid, sizeof(struct Cookie *), cookie_sort_ct);
for(i = 0; i < nvalid; i++) {
char *format_ptr = get_netscape_format(array[i]);
if(!format_ptr) {
free(array);
error = CURLE_OUT_OF_MEMORY;
goto error;
}
fprintf(out, "%s\n", format_ptr);
free(format_ptr);
}
free(array);
}
if(!use_stdout) {
fclose(out);
out = NULL;
if(tempstore && Curl_rename(tempstore, filename)) {
unlink(tempstore);
error = CURLE_WRITE_ERROR;
goto error;
}
}
/*
* If we reach here we have successfully written a cookie file so theree is
* no need to inspect the error, any error case should have jumped into the
* error block below.
*/
free(tempstore);
return CURLE_OK;
error:
if(out && !use_stdout)
fclose(out);
free(tempstore);
return error;
}
benchmarks/pairs/vfc/curl-cve-2022-32207/vuln.c
+121
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@@ -0,0 +1,121 @@
/* Provenance: curl/curl cookie_output (vuln).
* repo: curl/curl
* commit: 46f8911d3942dc06fdd67e9f6f3908982e5d2fb4
* parent: 46f8911d3942dc06fdd67e9f6f3908982e5d2fb4
* commit_url: https://github.com/curl/curl/commit/20f9dd6bae50b7223171b17ba7798946e74f877f
* cve: CVE-2022-32207
* license: curl
* function: cookie_output
* relpath: lib/cookie.c
*/
* cookie_output()
*
* Writes all internally known cookies to the specified file. Specify
* "-" as file name to write to stdout.
*
* The function returns non-zero on write failure.
*/
static CURLcode cookie_output(struct Curl_easy *data,
struct CookieInfo *c, const char *filename)
{
struct Cookie *co;
FILE *out = NULL;
bool use_stdout = FALSE;
char *tempstore = NULL;
CURLcode error = CURLE_OK;
if(!c)
/* no cookie engine alive */
return CURLE_OK;
/* at first, remove expired cookies */
remove_expired(c);
if(!strcmp("-", filename)) {
/* use stdout */
out = stdout;
use_stdout = TRUE;
}
else {
unsigned char randsuffix[9];
if(Curl_rand_hex(data, randsuffix, sizeof(randsuffix)))
return 2;
tempstore = aprintf("%s.%s.tmp", filename, randsuffix);
if(!tempstore)
return CURLE_OUT_OF_MEMORY;
out = fopen(tempstore, FOPEN_WRITETEXT);
if(!out) {
error = CURLE_WRITE_ERROR;
goto error;
}
}
fputs("# Netscape HTTP Cookie File\n"
"# https://curl.se/docs/http-cookies.html\n"
"# This file was generated by libcurl! Edit at your own risk.\n\n",
out);
if(c->numcookies) {
unsigned int i;
size_t nvalid = 0;
struct Cookie **array;
array = calloc(1, sizeof(struct Cookie *) * c->numcookies);
if(!array) {
error = CURLE_OUT_OF_MEMORY;
goto error;
}
/* only sort the cookies with a domain property */
for(i = 0; i < COOKIE_HASH_SIZE; i++) {
for(co = c->cookies[i]; co; co = co->next) {
if(!co->domain)
continue;
array[nvalid++] = co;
}
}
qsort(array, nvalid, sizeof(struct Cookie *), cookie_sort_ct);
for(i = 0; i < nvalid; i++) {
char *format_ptr = get_netscape_format(array[i]);
if(!format_ptr) {
free(array);
error = CURLE_OUT_OF_MEMORY;
goto error;
}
fprintf(out, "%s\n", format_ptr);
free(format_ptr);
}
free(array);
}
if(!use_stdout) {
fclose(out);
out = NULL;
if(Curl_rename(tempstore, filename)) {
unlink(tempstore);
error = CURLE_WRITE_ERROR;
goto error;
}
}
/*
* If we reach here we have successfully written a cookie file so theree is
* no need to inspect the error, any error case should have jumped into the
* error block below.
*/
free(tempstore);
return CURLE_OK;
error:
if(out && !use_stdout)
fclose(out);
free(tempstore);
return error;
}
benchmarks/pairs/vfc/curl-cve-2022-32208/fixed.c
+45
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@@ -0,0 +1,45 @@
/* Provenance: curl/curl read_data (fixed).
* repo: curl/curl
* commit: 6ecdf5136b52af747e7bda08db9a748256b1cd09
* parent: 2b67a0a1129b20a56ed04859fec8999f5c0c4280
* commit_url: https://github.com/curl/curl/commit/6ecdf5136b52af747e7bda08db9a748256b1cd09
* cve: CVE-2022-32208
* license: curl
* function: read_data
* relpath: lib/krb5.c
*/
static CURLcode read_data(struct connectdata *conn,
curl_socket_t fd,
struct krb5buffer *buf)
{
int len;
CURLcode result;
int nread;
result = socket_read(fd, &len, sizeof(len));
if(result)
return result;
if(len) {
/* only realloc if there was a length */
len = ntohl(len);
if(len > CURL_MAX_INPUT_LENGTH)
len = 0;
else
buf->data = Curl_saferealloc(buf->data, len);
}
if(!len || !buf->data)
return CURLE_OUT_OF_MEMORY;
result = socket_read(fd, buf->data, len);
if(result)
return result;
nread = conn->mech->decode(conn->app_data, buf->data, len,
conn->data_prot, conn);
if(nread < 0)
return CURLE_RECV_ERROR;
buf->size = (size_t)nread;
buf->index = 0;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2022-32208/vuln.c
+38
View File
@@ -0,0 +1,38 @@
/* Provenance: curl/curl read_data (vuln).
* repo: curl/curl
* commit: 2b67a0a1129b20a56ed04859fec8999f5c0c4280
* parent: 2b67a0a1129b20a56ed04859fec8999f5c0c4280
* commit_url: https://github.com/curl/curl/commit/6ecdf5136b52af747e7bda08db9a748256b1cd09
* cve: CVE-2022-32208
* license: curl
* function: read_data
* relpath: lib/krb5.c
*/
static CURLcode read_data(struct connectdata *conn,
curl_socket_t fd,
struct krb5buffer *buf)
{
int len;
CURLcode result;
result = socket_read(fd, &len, sizeof(len));
if(result)
return result;
if(len) {
/* only realloc if there was a length */
len = ntohl(len);
buf->data = Curl_saferealloc(buf->data, len);
}
if(!len || !buf->data)
return CURLE_OUT_OF_MEMORY;
result = socket_read(fd, buf->data, len);
if(result)
return result;
buf->size = conn->mech->decode(conn->app_data, buf->data, len,
conn->data_prot, conn);
buf->index = 0;
return CURLE_OK;
}
benchmarks/pairs/vfc/curl-cve-2023-38545-do_socks5/fixed.c
+518
View File
@@ -0,0 +1,518 @@
/* Provenance: curl/curl do_SOCKS5 (fixed).
* repo: curl/curl
* commit: fb4415d8aee6c1045be932a34fe6107c2f5ed147
* parent: 09e25b9d94f4106eac8ca3a43b221bdc66f405e4
* commit_url: https://github.com/curl/curl/commit/fb4415d8aee6c1045be932a34fe6107c2f5ed147
* cve: CVE-2023-38545
* license: curl
* function: do_SOCKS5
* relpath: lib/socks.c
*/
static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf,
struct socks_state *sx,
struct Curl_easy *data)
{
/*
According to the RFC1928, section "6. Replies". This is what a SOCK5
replies:
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
Where:
o VER protocol version: X'05'
o REP Reply field:
o X'00' succeeded
*/
struct connectdata *conn = cf->conn;
unsigned char *socksreq = (unsigned char *)data->state.buffer;
int idx;
CURLcode result;
CURLproxycode presult;
bool socks5_resolve_local =
(conn->socks_proxy.proxytype == CURLPROXY_SOCKS5) ? TRUE : FALSE;
const size_t hostname_len = strlen(sx->hostname);
ssize_t len = 0;
const unsigned char auth = data->set.socks5auth;
bool allow_gssapi = FALSE;
struct Curl_dns_entry *dns = NULL;
DEBUGASSERT(auth & (CURLAUTH_BASIC | CURLAUTH_GSSAPI));
switch(sx->state) {
case CONNECT_SOCKS_INIT:
if(conn->bits.httpproxy)
infof(data, "SOCKS5: connecting to HTTP proxy %s port %d",
sx->hostname, sx->remote_port);
/* RFC1928 chapter 5 specifies max 255 chars for domain name in packet */
if(!socks5_resolve_local && hostname_len > 255) {
failf(data, "SOCKS5: the destination hostname is too long to be "
"resolved remotely by the proxy.");
return CURLPX_LONG_HOSTNAME;
}
if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
infof(data,
"warning: unsupported value passed to CURLOPT_SOCKS5_AUTH: %u",
auth);
if(!(auth & CURLAUTH_BASIC))
/* disable username/password auth */
sx->proxy_user = NULL;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(auth & CURLAUTH_GSSAPI)
allow_gssapi = TRUE;
#endif
idx = 0;
socksreq[idx++] = 5; /* version */
idx++; /* number of authentication methods */
socksreq[idx++] = 0; /* no authentication */
if(allow_gssapi)
socksreq[idx++] = 1; /* GSS-API */
if(sx->proxy_user)
socksreq[idx++] = 2; /* username/password */
/* write the number of authentication methods */
socksreq[1] = (unsigned char) (idx - 2);
sx->outp = socksreq;
sx->outstanding = idx;
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_SOCKS_READ);
goto CONNECT_SOCKS_READ_INIT;
case CONNECT_SOCKS_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
/* FALLTHROUGH */
CONNECT_SOCKS_READ_INIT:
case CONNECT_SOCKS_READ_INIT:
sx->outstanding = 2; /* expect two bytes */
sx->outp = socksreq; /* store it here */
/* FALLTHROUGH */
case CONNECT_SOCKS_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_CONNECT,
"initial SOCKS5 response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) {
failf(data, "Received invalid version in initial SOCKS5 response.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1] == 0) {
/* DONE! No authentication needed. Send request. */
sxstate(sx, data, CONNECT_REQ_INIT);
goto CONNECT_REQ_INIT;
}
else if(socksreq[1] == 2) {
/* regular name + password authentication */
sxstate(sx, data, CONNECT_AUTH_INIT);
goto CONNECT_AUTH_INIT;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
else if(allow_gssapi && (socksreq[1] == 1)) {
sxstate(sx, data, CONNECT_GSSAPI_INIT);
result = Curl_SOCKS5_gssapi_negotiate(cf, data);
if(result) {
failf(data, "Unable to negotiate SOCKS5 GSS-API context.");
return CURLPX_GSSAPI;
}
}
#endif
else {
/* error */
if(!allow_gssapi && (socksreq[1] == 1)) {
failf(data,
"SOCKS5 GSSAPI per-message authentication is not supported.");
return CURLPX_GSSAPI_PERMSG;
}
else if(socksreq[1] == 255) {
failf(data, "No authentication method was acceptable.");
return CURLPX_NO_AUTH;
}
}
failf(data,
"Undocumented SOCKS5 mode attempted to be used by server.");
return CURLPX_UNKNOWN_MODE;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
case CONNECT_GSSAPI_INIT:
/* GSSAPI stuff done non-blocking */
break;
#endif
default: /* do nothing! */
break;
CONNECT_AUTH_INIT:
case CONNECT_AUTH_INIT: {
/* Needs user name and password */
size_t proxy_user_len, proxy_password_len;
if(sx->proxy_user && sx->proxy_password) {
proxy_user_len = strlen(sx->proxy_user);
proxy_password_len = strlen(sx->proxy_password);
}
else {
proxy_user_len = 0;
proxy_password_len = 0;
}
/* username/password request looks like
* +----+------+----------+------+----------+
* |VER | ULEN | UNAME | PLEN | PASSWD |
* +----+------+----------+------+----------+
* | 1 | 1 | 1 to 255 | 1 | 1 to 255 |
* +----+------+----------+------+----------+
*/
len = 0;
socksreq[len++] = 1; /* username/pw subnegotiation version */
socksreq[len++] = (unsigned char) proxy_user_len;
if(sx->proxy_user && proxy_user_len) {
/* the length must fit in a single byte */
if(proxy_user_len > 255) {
failf(data, "Excessive user name length for proxy auth");
return CURLPX_LONG_USER;
}
memcpy(socksreq + len, sx->proxy_user, proxy_user_len);
}
len += proxy_user_len;
socksreq[len++] = (unsigned char) proxy_password_len;
if(sx->proxy_password && proxy_password_len) {
/* the length must fit in a single byte */
if(proxy_password_len > 255) {
failf(data, "Excessive password length for proxy auth");
return CURLPX_LONG_PASSWD;
}
memcpy(socksreq + len, sx->proxy_password, proxy_password_len);
}
len += proxy_password_len;
sxstate(sx, data, CONNECT_AUTH_SEND);
sx->outstanding = len;
sx->outp = socksreq;
}
/* FALLTHROUGH */
case CONNECT_AUTH_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_AUTH,
"SOCKS5 sub-negotiation request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sx->outp = socksreq;
sx->outstanding = 2;
sxstate(sx, data, CONNECT_AUTH_READ);
/* FALLTHROUGH */
case CONNECT_AUTH_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_AUTH,
"SOCKS5 sub-negotiation response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
/* ignore the first (VER) byte */
else if(socksreq[1]) { /* status */
failf(data, "User was rejected by the SOCKS5 server (%d %d).",
socksreq[0], socksreq[1]);
return CURLPX_USER_REJECTED;
}
/* Everything is good so far, user was authenticated! */
sxstate(sx, data, CONNECT_REQ_INIT);
/* FALLTHROUGH */
CONNECT_REQ_INIT:
case CONNECT_REQ_INIT:
if(socks5_resolve_local) {
enum resolve_t rc = Curl_resolv(data, sx->hostname, sx->remote_port,
TRUE, &dns);
if(rc == CURLRESOLV_ERROR)
return CURLPX_RESOLVE_HOST;
if(rc == CURLRESOLV_PENDING) {
sxstate(sx, data, CONNECT_RESOLVING);
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_RESOLVED);
goto CONNECT_RESOLVED;
}
goto CONNECT_RESOLVE_REMOTE;
case CONNECT_RESOLVING:
/* check if we have the name resolved by now */
dns = Curl_fetch_addr(data, sx->hostname, sx->remote_port);
if(dns) {
#ifdef CURLRES_ASYNCH
data->state.async.dns = dns;
data->state.async.done = TRUE;
#endif
infof(data, "SOCKS5: hostname '%s' found", sx->hostname);
}
if(!dns) {
result = Curl_resolv_check(data, &dns);
if(!dns) {
if(result)
return CURLPX_RESOLVE_HOST;
return CURLPX_OK;
}
}
/* FALLTHROUGH */
CONNECT_RESOLVED:
case CONNECT_RESOLVED: {
char dest[MAX_IPADR_LEN] = "unknown"; /* printable address */
struct Curl_addrinfo *hp = NULL;
if(dns)
hp = dns->addr;
if(!hp) {
failf(data, "Failed to resolve \"%s\" for SOCKS5 connect.",
sx->hostname);
return CURLPX_RESOLVE_HOST;
}
Curl_printable_address(hp, dest, sizeof(dest));
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(hp->ai_family == AF_INET) {
int i;
struct sockaddr_in *saddr_in;
socksreq[len++] = 1; /* ATYP: IPv4 = 1 */
saddr_in = (struct sockaddr_in *)(void *)hp->ai_addr;
for(i = 0; i < 4; i++) {
socksreq[len++] = ((unsigned char *)&saddr_in->sin_addr.s_addr)[i];
}
infof(data, "SOCKS5 connect to %s:%d (locally resolved)", dest,
sx->remote_port);
}
#ifdef ENABLE_IPV6
else if(hp->ai_family == AF_INET6) {
int i;
struct sockaddr_in6 *saddr_in6;
socksreq[len++] = 4; /* ATYP: IPv6 = 4 */
saddr_in6 = (struct sockaddr_in6 *)(void *)hp->ai_addr;
for(i = 0; i < 16; i++) {
socksreq[len++] =
((unsigned char *)&saddr_in6->sin6_addr.s6_addr)[i];
}
infof(data, "SOCKS5 connect to [%s]:%d (locally resolved)", dest,
sx->remote_port);
}
#endif
else {
hp = NULL; /* fail! */
failf(data, "SOCKS5 connection to %s not supported", dest);
}
Curl_resolv_unlock(data, dns); /* not used anymore from now on */
goto CONNECT_REQ_SEND;
}
CONNECT_RESOLVE_REMOTE:
case CONNECT_RESOLVE_REMOTE:
/* Authentication is complete, now specify destination to the proxy */
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(!socks5_resolve_local) {
/* ATYP: domain name = 3,
IPv6 == 4,
IPv4 == 1 */
unsigned char ip4[4];
#ifdef ENABLE_IPV6
if(conn->bits.ipv6_ip) {
char ip6[16];
if(1 != Curl_inet_pton(AF_INET6, sx->hostname, ip6))
return CURLPX_BAD_ADDRESS_TYPE;
socksreq[len++] = 4;
memcpy(&socksreq[len], ip6, sizeof(ip6));
len += sizeof(ip6);
}
else
#endif
if(1 == Curl_inet_pton(AF_INET, sx->hostname, ip4)) {
socksreq[len++] = 1;
memcpy(&socksreq[len], ip4, sizeof(ip4));
len += sizeof(ip4);
}
else {
socksreq[len++] = 3;
socksreq[len++] = (unsigned char) hostname_len; /* one byte length */
memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */
len += hostname_len;
}
infof(data, "SOCKS5 connect to %s:%d (remotely resolved)",
sx->hostname, sx->remote_port);
}
/* FALLTHROUGH */
CONNECT_REQ_SEND:
case CONNECT_REQ_SEND:
/* PORT MSB */
socksreq[len++] = (unsigned char)((sx->remote_port >> 8) & 0xff);
/* PORT LSB */
socksreq[len++] = (unsigned char)(sx->remote_port & 0xff);
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outp = socksreq;
sx->outstanding = len;
sxstate(sx, data, CONNECT_REQ_SENDING);
/* FALLTHROUGH */
case CONNECT_REQ_SENDING:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_REQUEST,
"SOCKS5 connect request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in send state */
return CURLPX_OK;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outstanding = 10; /* minimum packet size is 10 */
sx->outp = socksreq;
sxstate(sx, data, CONNECT_REQ_READ);
/* FALLTHROUGH */
case CONNECT_REQ_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_REQACK,
"SOCKS5 connect request ack");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) { /* version */
failf(data,
"SOCKS5 reply has wrong version, version should be 5.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1]) { /* Anything besides 0 is an error */
CURLproxycode rc = CURLPX_REPLY_UNASSIGNED;
int code = socksreq[1];
failf(data, "Can't complete SOCKS5 connection to %s. (%d)",
sx->hostname, (unsigned char)socksreq[1]);
if(code < 9) {
/* RFC 1928 section 6 lists: */
static const CURLproxycode lookup[] = {
CURLPX_OK,
CURLPX_REPLY_GENERAL_SERVER_FAILURE,
CURLPX_REPLY_NOT_ALLOWED,
CURLPX_REPLY_NETWORK_UNREACHABLE,
CURLPX_REPLY_HOST_UNREACHABLE,
CURLPX_REPLY_CONNECTION_REFUSED,
CURLPX_REPLY_TTL_EXPIRED,
CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
};
rc = lookup[code];
}
return rc;
}
/* Fix: in general, returned BND.ADDR is variable length parameter by RFC
1928, so the reply packet should be read until the end to avoid errors
at subsequent protocol level.
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
ATYP:
o IP v4 address: X'01', BND.ADDR = 4 byte
o domain name: X'03', BND.ADDR = [ 1 byte length, string ]
o IP v6 address: X'04', BND.ADDR = 16 byte
*/
/* Calculate real packet size */
if(socksreq[3] == 3) {
/* domain name */
int addrlen = (int) socksreq[4];
len = 5 + addrlen + 2;
}
else if(socksreq[3] == 4) {
/* IPv6 */
len = 4 + 16 + 2;
}
else if(socksreq[3] == 1) {
len = 4 + 4 + 2;
}
else {
failf(data, "SOCKS5 reply has wrong address type.");
return CURLPX_BAD_ADDRESS_TYPE;
}
/* At this point we already read first 10 bytes */
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(!conn->socks5_gssapi_enctype) {
/* decrypt_gssapi_blockread already read the whole packet */
#endif
if(len > 10) {
sx->outstanding = len - 10; /* get the rest */
sx->outp = &socksreq[10];
sxstate(sx, data, CONNECT_REQ_READ_MORE);
}
else {
sxstate(sx, data, CONNECT_DONE);
break;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
}
#endif
/* FALLTHROUGH */
case CONNECT_REQ_READ_MORE:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_ADDRESS,
"SOCKS5 connect request address");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_DONE);
}
infof(data, "SOCKS5 request granted.");
return CURLPX_OK; /* Proxy was successful! */
}
benchmarks/pairs/vfc/curl-cve-2023-38545-do_socks5/vuln.c
+518
View File
@@ -0,0 +1,518 @@
/* Provenance: curl/curl do_SOCKS5 (vuln).
* repo: curl/curl
* commit: 09e25b9d94f4106eac8ca3a43b221bdc66f405e4
* parent: 09e25b9d94f4106eac8ca3a43b221bdc66f405e4
* commit_url: https://github.com/curl/curl/commit/fb4415d8aee6c1045be932a34fe6107c2f5ed147
* cve: CVE-2023-38545
* license: curl
* function: do_SOCKS5
* relpath: lib/socks.c
*/
static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf,
struct socks_state *sx,
struct Curl_easy *data)
{
/*
According to the RFC1928, section "6. Replies". This is what a SOCK5
replies:
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
Where:
o VER protocol version: X'05'
o REP Reply field:
o X'00' succeeded
*/
struct connectdata *conn = cf->conn;
unsigned char *socksreq = (unsigned char *)data->state.buffer;
int idx;
CURLcode result;
CURLproxycode presult;
bool socks5_resolve_local =
(conn->socks_proxy.proxytype == CURLPROXY_SOCKS5) ? TRUE : FALSE;
const size_t hostname_len = strlen(sx->hostname);
ssize_t len = 0;
const unsigned char auth = data->set.socks5auth;
bool allow_gssapi = FALSE;
struct Curl_dns_entry *dns = NULL;
DEBUGASSERT(auth & (CURLAUTH_BASIC | CURLAUTH_GSSAPI));
switch(sx->state) {
case CONNECT_SOCKS_INIT:
if(conn->bits.httpproxy)
infof(data, "SOCKS5: connecting to HTTP proxy %s port %d",
sx->hostname, sx->remote_port);
/* RFC1928 chapter 5 specifies max 255 chars for domain name in packet */
if(!socks5_resolve_local && hostname_len > 255) {
infof(data, "SOCKS5: server resolving disabled for hostnames of "
"length > 255 [actual len=%zu]", hostname_len);
socks5_resolve_local = TRUE;
}
if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
infof(data,
"warning: unsupported value passed to CURLOPT_SOCKS5_AUTH: %u",
auth);
if(!(auth & CURLAUTH_BASIC))
/* disable username/password auth */
sx->proxy_user = NULL;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(auth & CURLAUTH_GSSAPI)
allow_gssapi = TRUE;
#endif
idx = 0;
socksreq[idx++] = 5; /* version */
idx++; /* number of authentication methods */
socksreq[idx++] = 0; /* no authentication */
if(allow_gssapi)
socksreq[idx++] = 1; /* GSS-API */
if(sx->proxy_user)
socksreq[idx++] = 2; /* username/password */
/* write the number of authentication methods */
socksreq[1] = (unsigned char) (idx - 2);
sx->outp = socksreq;
sx->outstanding = idx;
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_SOCKS_READ);
goto CONNECT_SOCKS_READ_INIT;
case CONNECT_SOCKS_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
/* FALLTHROUGH */
CONNECT_SOCKS_READ_INIT:
case CONNECT_SOCKS_READ_INIT:
sx->outstanding = 2; /* expect two bytes */
sx->outp = socksreq; /* store it here */
/* FALLTHROUGH */
case CONNECT_SOCKS_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_CONNECT,
"initial SOCKS5 response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) {
failf(data, "Received invalid version in initial SOCKS5 response.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1] == 0) {
/* DONE! No authentication needed. Send request. */
sxstate(sx, data, CONNECT_REQ_INIT);
goto CONNECT_REQ_INIT;
}
else if(socksreq[1] == 2) {
/* regular name + password authentication */
sxstate(sx, data, CONNECT_AUTH_INIT);
goto CONNECT_AUTH_INIT;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
else if(allow_gssapi && (socksreq[1] == 1)) {
sxstate(sx, data, CONNECT_GSSAPI_INIT);
result = Curl_SOCKS5_gssapi_negotiate(cf, data);
if(result) {
failf(data, "Unable to negotiate SOCKS5 GSS-API context.");
return CURLPX_GSSAPI;
}
}
#endif
else {
/* error */
if(!allow_gssapi && (socksreq[1] == 1)) {
failf(data,
"SOCKS5 GSSAPI per-message authentication is not supported.");
return CURLPX_GSSAPI_PERMSG;
}
else if(socksreq[1] == 255) {
failf(data, "No authentication method was acceptable.");
return CURLPX_NO_AUTH;
}
}
failf(data,
"Undocumented SOCKS5 mode attempted to be used by server.");
return CURLPX_UNKNOWN_MODE;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
case CONNECT_GSSAPI_INIT:
/* GSSAPI stuff done non-blocking */
break;
#endif
default: /* do nothing! */
break;
CONNECT_AUTH_INIT:
case CONNECT_AUTH_INIT: {
/* Needs user name and password */
size_t proxy_user_len, proxy_password_len;
if(sx->proxy_user && sx->proxy_password) {
proxy_user_len = strlen(sx->proxy_user);
proxy_password_len = strlen(sx->proxy_password);
}
else {
proxy_user_len = 0;
proxy_password_len = 0;
}
/* username/password request looks like
* +----+------+----------+------+----------+
* |VER | ULEN | UNAME | PLEN | PASSWD |
* +----+------+----------+------+----------+
* | 1 | 1 | 1 to 255 | 1 | 1 to 255 |
* +----+------+----------+------+----------+
*/
len = 0;
socksreq[len++] = 1; /* username/pw subnegotiation version */
socksreq[len++] = (unsigned char) proxy_user_len;
if(sx->proxy_user && proxy_user_len) {
/* the length must fit in a single byte */
if(proxy_user_len > 255) {
failf(data, "Excessive user name length for proxy auth");
return CURLPX_LONG_USER;
}
memcpy(socksreq + len, sx->proxy_user, proxy_user_len);
}
len += proxy_user_len;
socksreq[len++] = (unsigned char) proxy_password_len;
if(sx->proxy_password && proxy_password_len) {
/* the length must fit in a single byte */
if(proxy_password_len > 255) {
failf(data, "Excessive password length for proxy auth");
return CURLPX_LONG_PASSWD;
}
memcpy(socksreq + len, sx->proxy_password, proxy_password_len);
}
len += proxy_password_len;
sxstate(sx, data, CONNECT_AUTH_SEND);
sx->outstanding = len;
sx->outp = socksreq;
}
/* FALLTHROUGH */
case CONNECT_AUTH_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_AUTH,
"SOCKS5 sub-negotiation request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sx->outp = socksreq;
sx->outstanding = 2;
sxstate(sx, data, CONNECT_AUTH_READ);
/* FALLTHROUGH */
case CONNECT_AUTH_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_AUTH,
"SOCKS5 sub-negotiation response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
/* ignore the first (VER) byte */
else if(socksreq[1]) { /* status */
failf(data, "User was rejected by the SOCKS5 server (%d %d).",
socksreq[0], socksreq[1]);
return CURLPX_USER_REJECTED;
}
/* Everything is good so far, user was authenticated! */
sxstate(sx, data, CONNECT_REQ_INIT);
/* FALLTHROUGH */
CONNECT_REQ_INIT:
case CONNECT_REQ_INIT:
if(socks5_resolve_local) {
enum resolve_t rc = Curl_resolv(data, sx->hostname, sx->remote_port,
TRUE, &dns);
if(rc == CURLRESOLV_ERROR)
return CURLPX_RESOLVE_HOST;
if(rc == CURLRESOLV_PENDING) {
sxstate(sx, data, CONNECT_RESOLVING);
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_RESOLVED);
goto CONNECT_RESOLVED;
}
goto CONNECT_RESOLVE_REMOTE;
case CONNECT_RESOLVING:
/* check if we have the name resolved by now */
dns = Curl_fetch_addr(data, sx->hostname, sx->remote_port);
if(dns) {
#ifdef CURLRES_ASYNCH
data->state.async.dns = dns;
data->state.async.done = TRUE;
#endif
infof(data, "SOCKS5: hostname '%s' found", sx->hostname);
}
if(!dns) {
result = Curl_resolv_check(data, &dns);
if(!dns) {
if(result)
return CURLPX_RESOLVE_HOST;
return CURLPX_OK;
}
}
/* FALLTHROUGH */
CONNECT_RESOLVED:
case CONNECT_RESOLVED: {
char dest[MAX_IPADR_LEN] = "unknown"; /* printable address */
struct Curl_addrinfo *hp = NULL;
if(dns)
hp = dns->addr;
if(!hp) {
failf(data, "Failed to resolve \"%s\" for SOCKS5 connect.",
sx->hostname);
return CURLPX_RESOLVE_HOST;
}
Curl_printable_address(hp, dest, sizeof(dest));
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(hp->ai_family == AF_INET) {
int i;
struct sockaddr_in *saddr_in;
socksreq[len++] = 1; /* ATYP: IPv4 = 1 */
saddr_in = (struct sockaddr_in *)(void *)hp->ai_addr;
for(i = 0; i < 4; i++) {
socksreq[len++] = ((unsigned char *)&saddr_in->sin_addr.s_addr)[i];
}
infof(data, "SOCKS5 connect to %s:%d (locally resolved)", dest,
sx->remote_port);
}
#ifdef ENABLE_IPV6
else if(hp->ai_family == AF_INET6) {
int i;
struct sockaddr_in6 *saddr_in6;
socksreq[len++] = 4; /* ATYP: IPv6 = 4 */
saddr_in6 = (struct sockaddr_in6 *)(void *)hp->ai_addr;
for(i = 0; i < 16; i++) {
socksreq[len++] =
((unsigned char *)&saddr_in6->sin6_addr.s6_addr)[i];
}
infof(data, "SOCKS5 connect to [%s]:%d (locally resolved)", dest,
sx->remote_port);
}
#endif
else {
hp = NULL; /* fail! */
failf(data, "SOCKS5 connection to %s not supported", dest);
}
Curl_resolv_unlock(data, dns); /* not used anymore from now on */
goto CONNECT_REQ_SEND;
}
CONNECT_RESOLVE_REMOTE:
case CONNECT_RESOLVE_REMOTE:
/* Authentication is complete, now specify destination to the proxy */
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(!socks5_resolve_local) {
/* ATYP: domain name = 3,
IPv6 == 4,
IPv4 == 1 */
unsigned char ip4[4];
#ifdef ENABLE_IPV6
if(conn->bits.ipv6_ip) {
char ip6[16];
if(1 != Curl_inet_pton(AF_INET6, sx->hostname, ip6))
return CURLPX_BAD_ADDRESS_TYPE;
socksreq[len++] = 4;
memcpy(&socksreq[len], ip6, sizeof(ip6));
len += sizeof(ip6);
}
else
#endif
if(1 == Curl_inet_pton(AF_INET, sx->hostname, ip4)) {
socksreq[len++] = 1;
memcpy(&socksreq[len], ip4, sizeof(ip4));
len += sizeof(ip4);
}
else {
socksreq[len++] = 3;
socksreq[len++] = (char) hostname_len; /* one byte address length */
memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */
len += hostname_len;
}
infof(data, "SOCKS5 connect to %s:%d (remotely resolved)",
sx->hostname, sx->remote_port);
}
/* FALLTHROUGH */
CONNECT_REQ_SEND:
case CONNECT_REQ_SEND:
/* PORT MSB */
socksreq[len++] = (unsigned char)((sx->remote_port >> 8) & 0xff);
/* PORT LSB */
socksreq[len++] = (unsigned char)(sx->remote_port & 0xff);
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outp = socksreq;
sx->outstanding = len;
sxstate(sx, data, CONNECT_REQ_SENDING);
/* FALLTHROUGH */
case CONNECT_REQ_SENDING:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_REQUEST,
"SOCKS5 connect request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in send state */
return CURLPX_OK;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outstanding = 10; /* minimum packet size is 10 */
sx->outp = socksreq;
sxstate(sx, data, CONNECT_REQ_READ);
/* FALLTHROUGH */
case CONNECT_REQ_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_REQACK,
"SOCKS5 connect request ack");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) { /* version */
failf(data,
"SOCKS5 reply has wrong version, version should be 5.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1]) { /* Anything besides 0 is an error */
CURLproxycode rc = CURLPX_REPLY_UNASSIGNED;
int code = socksreq[1];
failf(data, "Can't complete SOCKS5 connection to %s. (%d)",
sx->hostname, (unsigned char)socksreq[1]);
if(code < 9) {
/* RFC 1928 section 6 lists: */
static const CURLproxycode lookup[] = {
CURLPX_OK,
CURLPX_REPLY_GENERAL_SERVER_FAILURE,
CURLPX_REPLY_NOT_ALLOWED,
CURLPX_REPLY_NETWORK_UNREACHABLE,
CURLPX_REPLY_HOST_UNREACHABLE,
CURLPX_REPLY_CONNECTION_REFUSED,
CURLPX_REPLY_TTL_EXPIRED,
CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
};
rc = lookup[code];
}
return rc;
}
/* Fix: in general, returned BND.ADDR is variable length parameter by RFC
1928, so the reply packet should be read until the end to avoid errors
at subsequent protocol level.
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
ATYP:
o IP v4 address: X'01', BND.ADDR = 4 byte
o domain name: X'03', BND.ADDR = [ 1 byte length, string ]
o IP v6 address: X'04', BND.ADDR = 16 byte
*/
/* Calculate real packet size */
if(socksreq[3] == 3) {
/* domain name */
int addrlen = (int) socksreq[4];
len = 5 + addrlen + 2;
}
else if(socksreq[3] == 4) {
/* IPv6 */
len = 4 + 16 + 2;
}
else if(socksreq[3] == 1) {
len = 4 + 4 + 2;
}
else {
failf(data, "SOCKS5 reply has wrong address type.");
return CURLPX_BAD_ADDRESS_TYPE;
}
/* At this point we already read first 10 bytes */
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(!conn->socks5_gssapi_enctype) {
/* decrypt_gssapi_blockread already read the whole packet */
#endif
if(len > 10) {
sx->outstanding = len - 10; /* get the rest */
sx->outp = &socksreq[10];
sxstate(sx, data, CONNECT_REQ_READ_MORE);
}
else {
sxstate(sx, data, CONNECT_DONE);
break;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
}
#endif
/* FALLTHROUGH */
case CONNECT_REQ_READ_MORE:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_ADDRESS,
"SOCKS5 connect request address");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_DONE);
}
infof(data, "SOCKS5 request granted.");
return CURLPX_OK; /* Proxy was successful! */
}
benchmarks/pairs/vfc/curl-cve-2023-38545/fixed.c
+518
View File
@@ -0,0 +1,518 @@
/* Provenance: curl/curl do_SOCKS5 (fixed).
* repo: curl/curl
* commit: fb4415d8aee6c1045be932a34fe6107c2f5ed147
* parent: 09e25b9d94f4106eac8ca3a43b221bdc66f405e4
* commit_url: https://github.com/curl/curl/commit/fb4415d8aee6c1045be932a34fe6107c2f5ed147
* cve: CVE-2023-38545
* license: curl
* function: do_SOCKS5
* relpath: lib/socks.c
*/
static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf,
struct socks_state *sx,
struct Curl_easy *data)
{
/*
According to the RFC1928, section "6. Replies". This is what a SOCK5
replies:
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
Where:
o VER protocol version: X'05'
o REP Reply field:
o X'00' succeeded
*/
struct connectdata *conn = cf->conn;
unsigned char *socksreq = (unsigned char *)data->state.buffer;
int idx;
CURLcode result;
CURLproxycode presult;
bool socks5_resolve_local =
(conn->socks_proxy.proxytype == CURLPROXY_SOCKS5) ? TRUE : FALSE;
const size_t hostname_len = strlen(sx->hostname);
ssize_t len = 0;
const unsigned char auth = data->set.socks5auth;
bool allow_gssapi = FALSE;
struct Curl_dns_entry *dns = NULL;
DEBUGASSERT(auth & (CURLAUTH_BASIC | CURLAUTH_GSSAPI));
switch(sx->state) {
case CONNECT_SOCKS_INIT:
if(conn->bits.httpproxy)
infof(data, "SOCKS5: connecting to HTTP proxy %s port %d",
sx->hostname, sx->remote_port);
/* RFC1928 chapter 5 specifies max 255 chars for domain name in packet */
if(!socks5_resolve_local && hostname_len > 255) {
failf(data, "SOCKS5: the destination hostname is too long to be "
"resolved remotely by the proxy.");
return CURLPX_LONG_HOSTNAME;
}
if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
infof(data,
"warning: unsupported value passed to CURLOPT_SOCKS5_AUTH: %u",
auth);
if(!(auth & CURLAUTH_BASIC))
/* disable username/password auth */
sx->proxy_user = NULL;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(auth & CURLAUTH_GSSAPI)
allow_gssapi = TRUE;
#endif
idx = 0;
socksreq[idx++] = 5; /* version */
idx++; /* number of authentication methods */
socksreq[idx++] = 0; /* no authentication */
if(allow_gssapi)
socksreq[idx++] = 1; /* GSS-API */
if(sx->proxy_user)
socksreq[idx++] = 2; /* username/password */
/* write the number of authentication methods */
socksreq[1] = (unsigned char) (idx - 2);
sx->outp = socksreq;
sx->outstanding = idx;
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_SOCKS_READ);
goto CONNECT_SOCKS_READ_INIT;
case CONNECT_SOCKS_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
/* FALLTHROUGH */
CONNECT_SOCKS_READ_INIT:
case CONNECT_SOCKS_READ_INIT:
sx->outstanding = 2; /* expect two bytes */
sx->outp = socksreq; /* store it here */
/* FALLTHROUGH */
case CONNECT_SOCKS_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_CONNECT,
"initial SOCKS5 response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) {
failf(data, "Received invalid version in initial SOCKS5 response.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1] == 0) {
/* DONE! No authentication needed. Send request. */
sxstate(sx, data, CONNECT_REQ_INIT);
goto CONNECT_REQ_INIT;
}
else if(socksreq[1] == 2) {
/* regular name + password authentication */
sxstate(sx, data, CONNECT_AUTH_INIT);
goto CONNECT_AUTH_INIT;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
else if(allow_gssapi && (socksreq[1] == 1)) {
sxstate(sx, data, CONNECT_GSSAPI_INIT);
result = Curl_SOCKS5_gssapi_negotiate(cf, data);
if(result) {
failf(data, "Unable to negotiate SOCKS5 GSS-API context.");
return CURLPX_GSSAPI;
}
}
#endif
else {
/* error */
if(!allow_gssapi && (socksreq[1] == 1)) {
failf(data,
"SOCKS5 GSSAPI per-message authentication is not supported.");
return CURLPX_GSSAPI_PERMSG;
}
else if(socksreq[1] == 255) {
failf(data, "No authentication method was acceptable.");
return CURLPX_NO_AUTH;
}
}
failf(data,
"Undocumented SOCKS5 mode attempted to be used by server.");
return CURLPX_UNKNOWN_MODE;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
case CONNECT_GSSAPI_INIT:
/* GSSAPI stuff done non-blocking */
break;
#endif
default: /* do nothing! */
break;
CONNECT_AUTH_INIT:
case CONNECT_AUTH_INIT: {
/* Needs user name and password */
size_t proxy_user_len, proxy_password_len;
if(sx->proxy_user && sx->proxy_password) {
proxy_user_len = strlen(sx->proxy_user);
proxy_password_len = strlen(sx->proxy_password);
}
else {
proxy_user_len = 0;
proxy_password_len = 0;
}
/* username/password request looks like
* +----+------+----------+------+----------+
* |VER | ULEN | UNAME | PLEN | PASSWD |
* +----+------+----------+------+----------+
* | 1 | 1 | 1 to 255 | 1 | 1 to 255 |
* +----+------+----------+------+----------+
*/
len = 0;
socksreq[len++] = 1; /* username/pw subnegotiation version */
socksreq[len++] = (unsigned char) proxy_user_len;
if(sx->proxy_user && proxy_user_len) {
/* the length must fit in a single byte */
if(proxy_user_len > 255) {
failf(data, "Excessive user name length for proxy auth");
return CURLPX_LONG_USER;
}
memcpy(socksreq + len, sx->proxy_user, proxy_user_len);
}
len += proxy_user_len;
socksreq[len++] = (unsigned char) proxy_password_len;
if(sx->proxy_password && proxy_password_len) {
/* the length must fit in a single byte */
if(proxy_password_len > 255) {
failf(data, "Excessive password length for proxy auth");
return CURLPX_LONG_PASSWD;
}
memcpy(socksreq + len, sx->proxy_password, proxy_password_len);
}
len += proxy_password_len;
sxstate(sx, data, CONNECT_AUTH_SEND);
sx->outstanding = len;
sx->outp = socksreq;
}
/* FALLTHROUGH */
case CONNECT_AUTH_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_AUTH,
"SOCKS5 sub-negotiation request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sx->outp = socksreq;
sx->outstanding = 2;
sxstate(sx, data, CONNECT_AUTH_READ);
/* FALLTHROUGH */
case CONNECT_AUTH_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_AUTH,
"SOCKS5 sub-negotiation response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
/* ignore the first (VER) byte */
else if(socksreq[1]) { /* status */
failf(data, "User was rejected by the SOCKS5 server (%d %d).",
socksreq[0], socksreq[1]);
return CURLPX_USER_REJECTED;
}
/* Everything is good so far, user was authenticated! */
sxstate(sx, data, CONNECT_REQ_INIT);
/* FALLTHROUGH */
CONNECT_REQ_INIT:
case CONNECT_REQ_INIT:
if(socks5_resolve_local) {
enum resolve_t rc = Curl_resolv(data, sx->hostname, sx->remote_port,
TRUE, &dns);
if(rc == CURLRESOLV_ERROR)
return CURLPX_RESOLVE_HOST;
if(rc == CURLRESOLV_PENDING) {
sxstate(sx, data, CONNECT_RESOLVING);
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_RESOLVED);
goto CONNECT_RESOLVED;
}
goto CONNECT_RESOLVE_REMOTE;
case CONNECT_RESOLVING:
/* check if we have the name resolved by now */
dns = Curl_fetch_addr(data, sx->hostname, sx->remote_port);
if(dns) {
#ifdef CURLRES_ASYNCH
data->state.async.dns = dns;
data->state.async.done = TRUE;
#endif
infof(data, "SOCKS5: hostname '%s' found", sx->hostname);
}
if(!dns) {
result = Curl_resolv_check(data, &dns);
if(!dns) {
if(result)
return CURLPX_RESOLVE_HOST;
return CURLPX_OK;
}
}
/* FALLTHROUGH */
CONNECT_RESOLVED:
case CONNECT_RESOLVED: {
char dest[MAX_IPADR_LEN] = "unknown"; /* printable address */
struct Curl_addrinfo *hp = NULL;
if(dns)
hp = dns->addr;
if(!hp) {
failf(data, "Failed to resolve \"%s\" for SOCKS5 connect.",
sx->hostname);
return CURLPX_RESOLVE_HOST;
}
Curl_printable_address(hp, dest, sizeof(dest));
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(hp->ai_family == AF_INET) {
int i;
struct sockaddr_in *saddr_in;
socksreq[len++] = 1; /* ATYP: IPv4 = 1 */
saddr_in = (struct sockaddr_in *)(void *)hp->ai_addr;
for(i = 0; i < 4; i++) {
socksreq[len++] = ((unsigned char *)&saddr_in->sin_addr.s_addr)[i];
}
infof(data, "SOCKS5 connect to %s:%d (locally resolved)", dest,
sx->remote_port);
}
#ifdef ENABLE_IPV6
else if(hp->ai_family == AF_INET6) {
int i;
struct sockaddr_in6 *saddr_in6;
socksreq[len++] = 4; /* ATYP: IPv6 = 4 */
saddr_in6 = (struct sockaddr_in6 *)(void *)hp->ai_addr;
for(i = 0; i < 16; i++) {
socksreq[len++] =
((unsigned char *)&saddr_in6->sin6_addr.s6_addr)[i];
}
infof(data, "SOCKS5 connect to [%s]:%d (locally resolved)", dest,
sx->remote_port);
}
#endif
else {
hp = NULL; /* fail! */
failf(data, "SOCKS5 connection to %s not supported", dest);
}
Curl_resolv_unlock(data, dns); /* not used anymore from now on */
goto CONNECT_REQ_SEND;
}
CONNECT_RESOLVE_REMOTE:
case CONNECT_RESOLVE_REMOTE:
/* Authentication is complete, now specify destination to the proxy */
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(!socks5_resolve_local) {
/* ATYP: domain name = 3,
IPv6 == 4,
IPv4 == 1 */
unsigned char ip4[4];
#ifdef ENABLE_IPV6
if(conn->bits.ipv6_ip) {
char ip6[16];
if(1 != Curl_inet_pton(AF_INET6, sx->hostname, ip6))
return CURLPX_BAD_ADDRESS_TYPE;
socksreq[len++] = 4;
memcpy(&socksreq[len], ip6, sizeof(ip6));
len += sizeof(ip6);
}
else
#endif
if(1 == Curl_inet_pton(AF_INET, sx->hostname, ip4)) {
socksreq[len++] = 1;
memcpy(&socksreq[len], ip4, sizeof(ip4));
len += sizeof(ip4);
}
else {
socksreq[len++] = 3;
socksreq[len++] = (unsigned char) hostname_len; /* one byte length */
memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */
len += hostname_len;
}
infof(data, "SOCKS5 connect to %s:%d (remotely resolved)",
sx->hostname, sx->remote_port);
}
/* FALLTHROUGH */
CONNECT_REQ_SEND:
case CONNECT_REQ_SEND:
/* PORT MSB */
socksreq[len++] = (unsigned char)((sx->remote_port >> 8) & 0xff);
/* PORT LSB */
socksreq[len++] = (unsigned char)(sx->remote_port & 0xff);
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outp = socksreq;
sx->outstanding = len;
sxstate(sx, data, CONNECT_REQ_SENDING);
/* FALLTHROUGH */
case CONNECT_REQ_SENDING:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_REQUEST,
"SOCKS5 connect request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in send state */
return CURLPX_OK;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outstanding = 10; /* minimum packet size is 10 */
sx->outp = socksreq;
sxstate(sx, data, CONNECT_REQ_READ);
/* FALLTHROUGH */
case CONNECT_REQ_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_REQACK,
"SOCKS5 connect request ack");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) { /* version */
failf(data,
"SOCKS5 reply has wrong version, version should be 5.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1]) { /* Anything besides 0 is an error */
CURLproxycode rc = CURLPX_REPLY_UNASSIGNED;
int code = socksreq[1];
failf(data, "Can't complete SOCKS5 connection to %s. (%d)",
sx->hostname, (unsigned char)socksreq[1]);
if(code < 9) {
/* RFC 1928 section 6 lists: */
static const CURLproxycode lookup[] = {
CURLPX_OK,
CURLPX_REPLY_GENERAL_SERVER_FAILURE,
CURLPX_REPLY_NOT_ALLOWED,
CURLPX_REPLY_NETWORK_UNREACHABLE,
CURLPX_REPLY_HOST_UNREACHABLE,
CURLPX_REPLY_CONNECTION_REFUSED,
CURLPX_REPLY_TTL_EXPIRED,
CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
};
rc = lookup[code];
}
return rc;
}
/* Fix: in general, returned BND.ADDR is variable length parameter by RFC
1928, so the reply packet should be read until the end to avoid errors
at subsequent protocol level.
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
ATYP:
o IP v4 address: X'01', BND.ADDR = 4 byte
o domain name: X'03', BND.ADDR = [ 1 byte length, string ]
o IP v6 address: X'04', BND.ADDR = 16 byte
*/
/* Calculate real packet size */
if(socksreq[3] == 3) {
/* domain name */
int addrlen = (int) socksreq[4];
len = 5 + addrlen + 2;
}
else if(socksreq[3] == 4) {
/* IPv6 */
len = 4 + 16 + 2;
}
else if(socksreq[3] == 1) {
len = 4 + 4 + 2;
}
else {
failf(data, "SOCKS5 reply has wrong address type.");
return CURLPX_BAD_ADDRESS_TYPE;
}
/* At this point we already read first 10 bytes */
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(!conn->socks5_gssapi_enctype) {
/* decrypt_gssapi_blockread already read the whole packet */
#endif
if(len > 10) {
sx->outstanding = len - 10; /* get the rest */
sx->outp = &socksreq[10];
sxstate(sx, data, CONNECT_REQ_READ_MORE);
}
else {
sxstate(sx, data, CONNECT_DONE);
break;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
}
#endif
/* FALLTHROUGH */
case CONNECT_REQ_READ_MORE:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_ADDRESS,
"SOCKS5 connect request address");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_DONE);
}
infof(data, "SOCKS5 request granted.");
return CURLPX_OK; /* Proxy was successful! */
}
benchmarks/pairs/vfc/curl-cve-2023-38545/vuln.c
+518
View File
@@ -0,0 +1,518 @@
/* Provenance: curl/curl do_SOCKS5 (vuln).
* repo: curl/curl
* commit: 09e25b9d94f4106eac8ca3a43b221bdc66f405e4
* parent: 09e25b9d94f4106eac8ca3a43b221bdc66f405e4
* commit_url: https://github.com/curl/curl/commit/fb4415d8aee6c1045be932a34fe6107c2f5ed147
* cve: CVE-2023-38545
* license: curl
* function: do_SOCKS5
* relpath: lib/socks.c
*/
static CURLproxycode do_SOCKS5(struct Curl_cfilter *cf,
struct socks_state *sx,
struct Curl_easy *data)
{
/*
According to the RFC1928, section "6. Replies". This is what a SOCK5
replies:
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
Where:
o VER protocol version: X'05'
o REP Reply field:
o X'00' succeeded
*/
struct connectdata *conn = cf->conn;
unsigned char *socksreq = (unsigned char *)data->state.buffer;
int idx;
CURLcode result;
CURLproxycode presult;
bool socks5_resolve_local =
(conn->socks_proxy.proxytype == CURLPROXY_SOCKS5) ? TRUE : FALSE;
const size_t hostname_len = strlen(sx->hostname);
ssize_t len = 0;
const unsigned char auth = data->set.socks5auth;
bool allow_gssapi = FALSE;
struct Curl_dns_entry *dns = NULL;
DEBUGASSERT(auth & (CURLAUTH_BASIC | CURLAUTH_GSSAPI));
switch(sx->state) {
case CONNECT_SOCKS_INIT:
if(conn->bits.httpproxy)
infof(data, "SOCKS5: connecting to HTTP proxy %s port %d",
sx->hostname, sx->remote_port);
/* RFC1928 chapter 5 specifies max 255 chars for domain name in packet */
if(!socks5_resolve_local && hostname_len > 255) {
infof(data, "SOCKS5: server resolving disabled for hostnames of "
"length > 255 [actual len=%zu]", hostname_len);
socks5_resolve_local = TRUE;
}
if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
infof(data,
"warning: unsupported value passed to CURLOPT_SOCKS5_AUTH: %u",
auth);
if(!(auth & CURLAUTH_BASIC))
/* disable username/password auth */
sx->proxy_user = NULL;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(auth & CURLAUTH_GSSAPI)
allow_gssapi = TRUE;
#endif
idx = 0;
socksreq[idx++] = 5; /* version */
idx++; /* number of authentication methods */
socksreq[idx++] = 0; /* no authentication */
if(allow_gssapi)
socksreq[idx++] = 1; /* GSS-API */
if(sx->proxy_user)
socksreq[idx++] = 2; /* username/password */
/* write the number of authentication methods */
socksreq[1] = (unsigned char) (idx - 2);
sx->outp = socksreq;
sx->outstanding = idx;
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_SOCKS_READ);
goto CONNECT_SOCKS_READ_INIT;
case CONNECT_SOCKS_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_CONNECT,
"initial SOCKS5 request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
/* FALLTHROUGH */
CONNECT_SOCKS_READ_INIT:
case CONNECT_SOCKS_READ_INIT:
sx->outstanding = 2; /* expect two bytes */
sx->outp = socksreq; /* store it here */
/* FALLTHROUGH */
case CONNECT_SOCKS_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_CONNECT,
"initial SOCKS5 response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) {
failf(data, "Received invalid version in initial SOCKS5 response.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1] == 0) {
/* DONE! No authentication needed. Send request. */
sxstate(sx, data, CONNECT_REQ_INIT);
goto CONNECT_REQ_INIT;
}
else if(socksreq[1] == 2) {
/* regular name + password authentication */
sxstate(sx, data, CONNECT_AUTH_INIT);
goto CONNECT_AUTH_INIT;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
else if(allow_gssapi && (socksreq[1] == 1)) {
sxstate(sx, data, CONNECT_GSSAPI_INIT);
result = Curl_SOCKS5_gssapi_negotiate(cf, data);
if(result) {
failf(data, "Unable to negotiate SOCKS5 GSS-API context.");
return CURLPX_GSSAPI;
}
}
#endif
else {
/* error */
if(!allow_gssapi && (socksreq[1] == 1)) {
failf(data,
"SOCKS5 GSSAPI per-message authentication is not supported.");
return CURLPX_GSSAPI_PERMSG;
}
else if(socksreq[1] == 255) {
failf(data, "No authentication method was acceptable.");
return CURLPX_NO_AUTH;
}
}
failf(data,
"Undocumented SOCKS5 mode attempted to be used by server.");
return CURLPX_UNKNOWN_MODE;
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
case CONNECT_GSSAPI_INIT:
/* GSSAPI stuff done non-blocking */
break;
#endif
default: /* do nothing! */
break;
CONNECT_AUTH_INIT:
case CONNECT_AUTH_INIT: {
/* Needs user name and password */
size_t proxy_user_len, proxy_password_len;
if(sx->proxy_user && sx->proxy_password) {
proxy_user_len = strlen(sx->proxy_user);
proxy_password_len = strlen(sx->proxy_password);
}
else {
proxy_user_len = 0;
proxy_password_len = 0;
}
/* username/password request looks like
* +----+------+----------+------+----------+
* |VER | ULEN | UNAME | PLEN | PASSWD |
* +----+------+----------+------+----------+
* | 1 | 1 | 1 to 255 | 1 | 1 to 255 |
* +----+------+----------+------+----------+
*/
len = 0;
socksreq[len++] = 1; /* username/pw subnegotiation version */
socksreq[len++] = (unsigned char) proxy_user_len;
if(sx->proxy_user && proxy_user_len) {
/* the length must fit in a single byte */
if(proxy_user_len > 255) {
failf(data, "Excessive user name length for proxy auth");
return CURLPX_LONG_USER;
}
memcpy(socksreq + len, sx->proxy_user, proxy_user_len);
}
len += proxy_user_len;
socksreq[len++] = (unsigned char) proxy_password_len;
if(sx->proxy_password && proxy_password_len) {
/* the length must fit in a single byte */
if(proxy_password_len > 255) {
failf(data, "Excessive password length for proxy auth");
return CURLPX_LONG_PASSWD;
}
memcpy(socksreq + len, sx->proxy_password, proxy_password_len);
}
len += proxy_password_len;
sxstate(sx, data, CONNECT_AUTH_SEND);
sx->outstanding = len;
sx->outp = socksreq;
}
/* FALLTHROUGH */
case CONNECT_AUTH_SEND:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_AUTH,
"SOCKS5 sub-negotiation request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in sending state */
return CURLPX_OK;
}
sx->outp = socksreq;
sx->outstanding = 2;
sxstate(sx, data, CONNECT_AUTH_READ);
/* FALLTHROUGH */
case CONNECT_AUTH_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_AUTH,
"SOCKS5 sub-negotiation response");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
/* ignore the first (VER) byte */
else if(socksreq[1]) { /* status */
failf(data, "User was rejected by the SOCKS5 server (%d %d).",
socksreq[0], socksreq[1]);
return CURLPX_USER_REJECTED;
}
/* Everything is good so far, user was authenticated! */
sxstate(sx, data, CONNECT_REQ_INIT);
/* FALLTHROUGH */
CONNECT_REQ_INIT:
case CONNECT_REQ_INIT:
if(socks5_resolve_local) {
enum resolve_t rc = Curl_resolv(data, sx->hostname, sx->remote_port,
TRUE, &dns);
if(rc == CURLRESOLV_ERROR)
return CURLPX_RESOLVE_HOST;
if(rc == CURLRESOLV_PENDING) {
sxstate(sx, data, CONNECT_RESOLVING);
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_RESOLVED);
goto CONNECT_RESOLVED;
}
goto CONNECT_RESOLVE_REMOTE;
case CONNECT_RESOLVING:
/* check if we have the name resolved by now */
dns = Curl_fetch_addr(data, sx->hostname, sx->remote_port);
if(dns) {
#ifdef CURLRES_ASYNCH
data->state.async.dns = dns;
data->state.async.done = TRUE;
#endif
infof(data, "SOCKS5: hostname '%s' found", sx->hostname);
}
if(!dns) {
result = Curl_resolv_check(data, &dns);
if(!dns) {
if(result)
return CURLPX_RESOLVE_HOST;
return CURLPX_OK;
}
}
/* FALLTHROUGH */
CONNECT_RESOLVED:
case CONNECT_RESOLVED: {
char dest[MAX_IPADR_LEN] = "unknown"; /* printable address */
struct Curl_addrinfo *hp = NULL;
if(dns)
hp = dns->addr;
if(!hp) {
failf(data, "Failed to resolve \"%s\" for SOCKS5 connect.",
sx->hostname);
return CURLPX_RESOLVE_HOST;
}
Curl_printable_address(hp, dest, sizeof(dest));
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(hp->ai_family == AF_INET) {
int i;
struct sockaddr_in *saddr_in;
socksreq[len++] = 1; /* ATYP: IPv4 = 1 */
saddr_in = (struct sockaddr_in *)(void *)hp->ai_addr;
for(i = 0; i < 4; i++) {
socksreq[len++] = ((unsigned char *)&saddr_in->sin_addr.s_addr)[i];
}
infof(data, "SOCKS5 connect to %s:%d (locally resolved)", dest,
sx->remote_port);
}
#ifdef ENABLE_IPV6
else if(hp->ai_family == AF_INET6) {
int i;
struct sockaddr_in6 *saddr_in6;
socksreq[len++] = 4; /* ATYP: IPv6 = 4 */
saddr_in6 = (struct sockaddr_in6 *)(void *)hp->ai_addr;
for(i = 0; i < 16; i++) {
socksreq[len++] =
((unsigned char *)&saddr_in6->sin6_addr.s6_addr)[i];
}
infof(data, "SOCKS5 connect to [%s]:%d (locally resolved)", dest,
sx->remote_port);
}
#endif
else {
hp = NULL; /* fail! */
failf(data, "SOCKS5 connection to %s not supported", dest);
}
Curl_resolv_unlock(data, dns); /* not used anymore from now on */
goto CONNECT_REQ_SEND;
}
CONNECT_RESOLVE_REMOTE:
case CONNECT_RESOLVE_REMOTE:
/* Authentication is complete, now specify destination to the proxy */
len = 0;
socksreq[len++] = 5; /* version (SOCKS5) */
socksreq[len++] = 1; /* connect */
socksreq[len++] = 0; /* must be zero */
if(!socks5_resolve_local) {
/* ATYP: domain name = 3,
IPv6 == 4,
IPv4 == 1 */
unsigned char ip4[4];
#ifdef ENABLE_IPV6
if(conn->bits.ipv6_ip) {
char ip6[16];
if(1 != Curl_inet_pton(AF_INET6, sx->hostname, ip6))
return CURLPX_BAD_ADDRESS_TYPE;
socksreq[len++] = 4;
memcpy(&socksreq[len], ip6, sizeof(ip6));
len += sizeof(ip6);
}
else
#endif
if(1 == Curl_inet_pton(AF_INET, sx->hostname, ip4)) {
socksreq[len++] = 1;
memcpy(&socksreq[len], ip4, sizeof(ip4));
len += sizeof(ip4);
}
else {
socksreq[len++] = 3;
socksreq[len++] = (char) hostname_len; /* one byte address length */
memcpy(&socksreq[len], sx->hostname, hostname_len); /* w/o NULL */
len += hostname_len;
}
infof(data, "SOCKS5 connect to %s:%d (remotely resolved)",
sx->hostname, sx->remote_port);
}
/* FALLTHROUGH */
CONNECT_REQ_SEND:
case CONNECT_REQ_SEND:
/* PORT MSB */
socksreq[len++] = (unsigned char)((sx->remote_port >> 8) & 0xff);
/* PORT LSB */
socksreq[len++] = (unsigned char)(sx->remote_port & 0xff);
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outp = socksreq;
sx->outstanding = len;
sxstate(sx, data, CONNECT_REQ_SENDING);
/* FALLTHROUGH */
case CONNECT_REQ_SENDING:
presult = socks_state_send(cf, sx, data, CURLPX_SEND_REQUEST,
"SOCKS5 connect request");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in send state */
return CURLPX_OK;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(conn->socks5_gssapi_enctype) {
failf(data, "SOCKS5 GSS-API protection not yet implemented.");
return CURLPX_GSSAPI_PROTECTION;
}
#endif
sx->outstanding = 10; /* minimum packet size is 10 */
sx->outp = socksreq;
sxstate(sx, data, CONNECT_REQ_READ);
/* FALLTHROUGH */
case CONNECT_REQ_READ:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_REQACK,
"SOCKS5 connect request ack");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
else if(socksreq[0] != 5) { /* version */
failf(data,
"SOCKS5 reply has wrong version, version should be 5.");
return CURLPX_BAD_VERSION;
}
else if(socksreq[1]) { /* Anything besides 0 is an error */
CURLproxycode rc = CURLPX_REPLY_UNASSIGNED;
int code = socksreq[1];
failf(data, "Can't complete SOCKS5 connection to %s. (%d)",
sx->hostname, (unsigned char)socksreq[1]);
if(code < 9) {
/* RFC 1928 section 6 lists: */
static const CURLproxycode lookup[] = {
CURLPX_OK,
CURLPX_REPLY_GENERAL_SERVER_FAILURE,
CURLPX_REPLY_NOT_ALLOWED,
CURLPX_REPLY_NETWORK_UNREACHABLE,
CURLPX_REPLY_HOST_UNREACHABLE,
CURLPX_REPLY_CONNECTION_REFUSED,
CURLPX_REPLY_TTL_EXPIRED,
CURLPX_REPLY_COMMAND_NOT_SUPPORTED,
CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED,
};
rc = lookup[code];
}
return rc;
}
/* Fix: in general, returned BND.ADDR is variable length parameter by RFC
1928, so the reply packet should be read until the end to avoid errors
at subsequent protocol level.
+----+-----+-------+------+----------+----------+
|VER | REP | RSV | ATYP | BND.ADDR | BND.PORT |
+----+-----+-------+------+----------+----------+
| 1 | 1 | X'00' | 1 | Variable | 2 |
+----+-----+-------+------+----------+----------+
ATYP:
o IP v4 address: X'01', BND.ADDR = 4 byte
o domain name: X'03', BND.ADDR = [ 1 byte length, string ]
o IP v6 address: X'04', BND.ADDR = 16 byte
*/
/* Calculate real packet size */
if(socksreq[3] == 3) {
/* domain name */
int addrlen = (int) socksreq[4];
len = 5 + addrlen + 2;
}
else if(socksreq[3] == 4) {
/* IPv6 */
len = 4 + 16 + 2;
}
else if(socksreq[3] == 1) {
len = 4 + 4 + 2;
}
else {
failf(data, "SOCKS5 reply has wrong address type.");
return CURLPX_BAD_ADDRESS_TYPE;
}
/* At this point we already read first 10 bytes */
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
if(!conn->socks5_gssapi_enctype) {
/* decrypt_gssapi_blockread already read the whole packet */
#endif
if(len > 10) {
sx->outstanding = len - 10; /* get the rest */
sx->outp = &socksreq[10];
sxstate(sx, data, CONNECT_REQ_READ_MORE);
}
else {
sxstate(sx, data, CONNECT_DONE);
break;
}
#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
}
#endif
/* FALLTHROUGH */
case CONNECT_REQ_READ_MORE:
presult = socks_state_recv(cf, sx, data, CURLPX_RECV_ADDRESS,
"SOCKS5 connect request address");
if(CURLPX_OK != presult)
return presult;
else if(sx->outstanding) {
/* remain in reading state */
return CURLPX_OK;
}
sxstate(sx, data, CONNECT_DONE);
}
infof(data, "SOCKS5 request granted.");
return CURLPX_OK; /* Proxy was successful! */
}
benchmarks/pairs/vfc/curl-cve-2026-9080/fixed.c
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/* Provenance: curl/curl mev_forget_socket (fixed).
* repo: curl/curl
* commit: e9a2b0dc72dd3a9aa3a5210e89079a3b719475dc
* parent: f746780a1e548b4b93790b58d70c3b22fde5360d
* commit_url: https://github.com/curl/curl/commit/e9a2b0dc72dd3a9aa3a5210e89079a3b719475dc
* cve: CVE-2026-9080
* license: curl
* function: mev_forget_socket
* relpath: lib/multi_ev.c
*/
static CURLMcode mev_forget_socket(struct Curl_multi *multi,
struct Curl_easy *data,
curl_socket_t s,
const char *cause)
{
struct mev_sh_entry *entry = mev_sh_entry_get(&multi->ev.sh_entries, s);
int rc = 0;
if(!entry) /* we never knew or already forgot about this socket */
return CURLM_OK;
/* We managed this socket before, tell the socket callback to forget it. */
if(entry->announced && multi->socket_cb) {
NOVERBOSE((void)cause);
CURL_TRC_M(data, "ev %s, call(fd=%" FMT_SOCKET_T ", ev=REMOVE)", cause, s);
mev_in_callback(multi, TRUE);
rc = multi->socket_cb(data, s, CURL_POLL_REMOVE,
multi->socket_userp, entry->user_data);
mev_in_callback(multi, FALSE);
/* curl_easy_pause() is documented as callable from any callback; it
* re-enters mev_assess() which may free this 'entry'. Re-fetch. */
entry = mev_sh_entry_get(&multi->ev.sh_entries, s);
if(entry)
entry->announced = FALSE;
}
mev_sh_entry_kill(multi, s);
if(rc == -1) {
multi->dead = TRUE;
return CURLM_ABORTED_BY_CALLBACK;
}
return CURLM_OK;
}
benchmarks/pairs/vfc/curl-cve-2026-9080/vuln.c
+40
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/* Provenance: curl/curl mev_forget_socket (vuln).
* repo: curl/curl
* commit: f746780a1e548b4b93790b58d70c3b22fde5360d
* parent: f746780a1e548b4b93790b58d70c3b22fde5360d
* commit_url: https://github.com/curl/curl/commit/e9a2b0dc72dd3a9aa3a5210e89079a3b719475dc
* cve: CVE-2026-9080
* license: curl
* function: mev_forget_socket
* relpath: lib/multi_ev.c
*/
static CURLMcode mev_forget_socket(struct Curl_multi *multi,
struct Curl_easy *data,
curl_socket_t s,
const char *cause)
{
struct mev_sh_entry *entry = mev_sh_entry_get(&multi->ev.sh_entries, s);
int rc = 0;
if(!entry) /* we never knew or already forgot about this socket */
return CURLM_OK;
/* We managed this socket before, tell the socket callback to forget it. */
if(entry->announced && multi->socket_cb) {
NOVERBOSE((void)cause);
CURL_TRC_M(data, "ev %s, call(fd=%" FMT_SOCKET_T ", ev=REMOVE)", cause, s);
mev_in_callback(multi, TRUE);
rc = multi->socket_cb(data, s, CURL_POLL_REMOVE,
multi->socket_userp, entry->user_data);
mev_in_callback(multi, FALSE);
entry->announced = FALSE;
}
mev_sh_entry_kill(multi, s);
if(rc == -1) {
multi->dead = TRUE;
return CURLM_ABORTED_BY_CALLBACK;
}
return CURLM_OK;
}
benchmarks/pairs/vfc/firefox-bug-2058173/fixed.c
+59
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/* Provenance: mozilla-firefox/firefox mar_read_index (fixed).
* repo: mozilla-firefox/firefox
* commit: e46f28da1cd3a5d46a2680b3d87361e9e8de4ae6
* parent: eed0931f85474d0db6e2326dfd9718c6bf1cd418
* commit_url: https://github.com/mozilla-firefox/firefox/commit/e46f28da1cd3a5d46a2680b3d87361e9e8de4ae6
* cve: BUG-2058173
* license: MPL-2.0
* function: mar_read_index
* relpath: modules/libmar/src/mar_read.c
*/
static int mar_read_index(MarFile* mar) {
char id[MAR_ID_SIZE], *buf, *bufptr, *bufend;
uint32_t offset_to_index, size_of_index;
size_t mar_position = 0;
/* verify MAR ID */
if (mar_read_buffer(mar, id, &mar_position, MAR_ID_SIZE) != 0) {
return -1;
}
if (memcmp(id, MAR_ID, MAR_ID_SIZE) != 0) {
return -1;
}
if (mar_read_buffer(mar, &offset_to_index, &mar_position, sizeof(uint32_t)) !=
0) {
return -1;
}
offset_to_index = ntohl(offset_to_index);
mar_position = 0;
if (mar_buffer_seek(mar, &mar_position, offset_to_index) != 0) {
return -1;
}
if (mar_read_buffer(mar, &size_of_index, &mar_position, sizeof(uint32_t)) !=
0) {
return -1;
}
size_of_index = ntohl(size_of_index);
if (size_of_index > mar->data_len) {
return -1;
}
buf = (char*)malloc(size_of_index);
if (!buf) {
return -1;
}
if (mar_read_buffer(mar, buf, &mar_position, size_of_index) != 0) {
free(buf);
return -1;
}
bufptr = buf;
bufend = buf + size_of_index;
while (bufptr < bufend && mar_consume_index(mar, &bufptr, bufend) == 0);
free(buf);
return (bufptr == bufend) ? 0 : -1;
}
benchmarks/pairs/vfc/firefox-bug-2058173/vuln.c
+56
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@@ -0,0 +1,56 @@
/* Provenance: mozilla-firefox/firefox mar_read_index (vuln).
* repo: mozilla-firefox/firefox
* commit: eed0931f85474d0db6e2326dfd9718c6bf1cd418
* parent: eed0931f85474d0db6e2326dfd9718c6bf1cd418
* commit_url: https://github.com/mozilla-firefox/firefox/commit/e46f28da1cd3a5d46a2680b3d87361e9e8de4ae6
* cve: BUG-2058173
* license: MPL-2.0
* function: mar_read_index
* relpath: modules/libmar/src/mar_read.c
*/
static int mar_read_index(MarFile* mar) {
char id[MAR_ID_SIZE], *buf, *bufptr, *bufend;
uint32_t offset_to_index, size_of_index;
size_t mar_position = 0;
/* verify MAR ID */
if (mar_read_buffer(mar, id, &mar_position, MAR_ID_SIZE) != 0) {
return -1;
}
if (memcmp(id, MAR_ID, MAR_ID_SIZE) != 0) {
return -1;
}
if (mar_read_buffer(mar, &offset_to_index, &mar_position, sizeof(uint32_t)) !=
0) {
return -1;
}
offset_to_index = ntohl(offset_to_index);
mar_position = 0;
if (mar_buffer_seek(mar, &mar_position, offset_to_index) != 0) {
return -1;
}
if (mar_read_buffer(mar, &size_of_index, &mar_position, sizeof(uint32_t)) !=
0) {
return -1;
}
size_of_index = ntohl(size_of_index);
buf = (char*)malloc(size_of_index);
if (!buf) {
return -1;
}
if (mar_read_buffer(mar, buf, &mar_position, size_of_index) != 0) {
free(buf);
return -1;
}
bufptr = buf;
bufend = buf + size_of_index;
while (bufptr < bufend && mar_consume_index(mar, &bufptr, bufend) == 0);
free(buf);
return (bufptr == bufend) ? 0 : -1;
}
benchmarks/pairs/vfc/firefox-cve-2020-15667/fixed.c
+59
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@@ -0,0 +1,59 @@
/* Provenance: Firefox libmar mar_insert_item after CVE-2020-15667.
* repo: mozilla-central
* commit: b79b6cc78248eea7fda10bfb76aa273c19c9fa65
* parent: 0c0f777161a9499dd149853ff62d356f75d16c2a
* commit_url: https://hg.mozilla.org/mozilla-central/rev/b79b6cc78248eea7fda10bfb76aa273c19c9fa65
* phabricator: https://phabricator.services.mozilla.com/rMOZILLACENTRALb79b6cc78248eea7fda10bfb76aa273c19c9fa65
* cve: CVE-2020-15667
* bug: 1653371
* license: MPL-2.0
* function: mar_insert_item
* relpath: modules/libmar/src/mar_read.c
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
typedef struct MarItem_ {
struct MarItem_ *next;
uint32_t offset;
uint32_t length;
uint32_t flags;
char name[1];
} MarItem;
typedef struct {
MarItem *item_table[256];
} MarFile;
static uint32_t mar_hash_name(const char *name) {
(void)name;
return 0;
}
static int mar_insert_item(MarFile *mar, const char *name, uint32_t namelen, uint32_t offset, uint32_t length, uint32_t flags) {
MarItem *item, *root;
uint32_t hash;
item = (MarItem *)malloc(sizeof(MarItem) + namelen);
if (!item) {
return -1;
}
item->next = NULL;
item->offset = offset;
item->length = length;
item->flags = flags;
memcpy(item->name, name, namelen + 1);
hash = mar_hash_name(name);
root = mar->item_table[hash];
if (!root) {
mar->item_table[hash] = item;
} else {
/* append item */
while (root->next) root = root->next;
root->next = item;
}
return 0;
}
benchmarks/pairs/vfc/firefox-cve-2020-15667/vuln.c
+60
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/* Provenance: Firefox libmar mar_insert_item before CVE-2020-15667.
* repo: mozilla-central
* commit: 0c0f777161a9499dd149853ff62d356f75d16c2a
* parent: 0c0f777161a9499dd149853ff62d356f75d16c2a
* fix: b79b6cc78248eea7fda10bfb76aa273c19c9fa65
* commit_url: https://hg.mozilla.org/mozilla-central/rev/b79b6cc78248eea7fda10bfb76aa273c19c9fa65
* phabricator: https://phabricator.services.mozilla.com/rMOZILLACENTRALb79b6cc78248eea7fda10bfb76aa273c19c9fa65
* cve: CVE-2020-15667
* bug: 1653371
* license: MPL-2.0
* function: mar_insert_item
* relpath: modules/libmar/src/mar_read.c
*/
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
typedef struct MarItem_ {
struct MarItem_ *next;
uint32_t offset;
uint32_t length;
uint32_t flags;
char name[1];
} MarItem;
typedef struct {
MarItem *item_table[256];
} MarFile;
static uint32_t mar_hash_name(const char *name) {
(void)name;
return 0;
}
static int mar_insert_item(MarFile *mar, const char *name, int namelen, uint32_t offset, uint32_t length, uint32_t flags) {
MarItem *item, *root;
uint32_t hash;
item = (MarItem *)malloc(sizeof(MarItem) + namelen);
if (!item) {
return -1;
}
item->next = NULL;
item->offset = offset;
item->length = length;
item->flags = flags;
memcpy(item->name, name, namelen + 1);
hash = mar_hash_name(name);
root = mar->item_table[hash];
if (!root) {
mar->item_table[hash] = item;
} else {
/* append item */
while (root->next) root = root->next;
root->next = item;
}
return 0;
}
benchmarks/pairs/vfc/generate_catalog.py
+105
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@@ -0,0 +1,105 @@
#!/usr/bin/env python3
"""Rebuild catalog.toml and training/manifest.jsonl from recipes.toml + excerpts."""
from __future__ import annotations
import json
import tomllib
from pathlib import Path
ROOT = Path(__file__).resolve().parent
RECIPES = ROOT / "recipes.toml"
CATALOG = ROOT / "catalog.toml"
TRAINING = ROOT / "training" / "manifest.jsonl"
LANG_TO_PAIR = {"c": "c_cpp", "cpp": "c_cpp", "perl": "unknown", "javascript": "javascript", "python": "python", "java": "java"}
def excerpt_rel(recipe: dict[str, object]) -> tuple[str, str]:
name = str(recipe["name"])
ext = Path(str(recipe.get("path", "a.c"))).suffix or ".c"
return f"{name}/vuln{ext}", f"{name}/fixed{ext}"
def catalog_text(recipes: list[dict[str, object]]) -> str:
lines = [
"# Real-world VFC slice. Reviewed isolated functions.",
"# Honesty dashboard — not the local 100% CI gate.",
"# Do not add these names to LANGUAGE_MANIFESTS.",
"# Regenerated by generate_catalog.py from recipes.toml.",
"",
]
for recipe in recipes:
vuln, fixed = excerpt_rel(recipe)
lang = LANG_TO_PAIR.get(str(recipe.get("language", "c")), "c_cpp")
lines += [
"[[pair]]",
f'name = "{recipe["name"]}"',
'slice = "vfc"',
f'language = "{lang}"',
f'origin = "{recipe.get("origin", "")}"',
f'license = "{recipe.get("license", "")}"',
f'repo = "{recipe.get("repo", "")}"',
f'cve = "{recipe.get("cve", "")}"',
f'cwe = "{recipe.get("cwe", "")}"',
f'commit = "{recipe.get("commit", "")}"',
f'parent = "{recipe.get("parent", "")}"',
f'commit_url = "{recipe.get("commit_url", "")}"',
f'vuln = "{vuln}"',
f'fixed = "{fixed}"',
f'relpath = "{recipe.get("relpath", recipe.get("path", ""))}"',
"min_recall = 1.0",
'fix_policy = "silent"',
"",
"[[pair.expected]]",
f'cwe = "{recipe.get("cwe", "")}"',
f'class = "{recipe.get("class", "")}"',
f'path = "{recipe.get("relpath", recipe.get("path", ""))}"',
]
if recipe.get("rule_id"):
lines.append(f'rule_id = "{recipe["rule_id"]}"')
if recipe.get("sink"):
lines.append(f'sink = "{recipe["sink"]}"')
if recipe.get("evidence"):
evidence = str(recipe["evidence"]).replace('"', '\\"')
lines.append(f'evidence = "{evidence}"')
lines.append("")
return "\n".join(lines)
def training_rows(recipes: list[dict[str, object]]) -> list[dict[str, object]]:
rows: list[dict[str, object]] = []
for recipe in recipes:
vuln, fixed = excerpt_rel(recipe)
base = {
"pair": recipe["name"],
"cve": recipe.get("cve", ""),
"year": int(recipe.get("year", 0) or 0),
"cwe": recipe.get("cwe", ""),
"class": recipe.get("class", ""),
"project": recipe.get("project", recipe.get("origin", "")),
"repo": recipe.get("repo", ""),
"license": recipe.get("license", ""),
"function": recipe.get("function", ""),
"relpath": recipe.get("relpath", recipe.get("path", "")),
"commit_url": recipe.get("commit_url", ""),
}
rows.append({**base, "id": f"{recipe['name']}:vuln", "label": "vuln", "file": vuln, "commit": recipe.get("parent", "")})
rows.append({**base, "id": f"{recipe['name']}:fixed", "label": "fixed", "file": fixed, "commit": recipe.get("commit", "")})
return rows
def main() -> int:
recipes = list(tomllib.loads(RECIPES.read_text()).get("recipe", []))
CATALOG.write_text(catalog_text(recipes), encoding="utf-8")
TRAINING.parent.mkdir(parents=True, exist_ok=True)
with TRAINING.open("w", encoding="utf-8") as handle:
for row in training_rows(recipes):
handle.write(json.dumps(row, sort_keys=True) + "\n")
print(f"wrote {CATALOG} ({len(recipes)} pairs)")
print(f"wrote {TRAINING} ({len(recipes) * 2} examples)")
return 0
if __name__ == "__main__":
raise SystemExit(main())
benchmarks/pairs/vfc/harvest.py
+204
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@@ -0,0 +1,204 @@
#!/usr/bin/env python3
"""Extract one function from public parent/fix blobs. Maintainer-only; CI stays offline.
Does not clone mozilla-central, gecko-dev, or Chromium. Advisory-only recipes
(no parent and commit) are rejected. FixFox is not a fetch source.
"""
from __future__ import annotations
import argparse
import sys
import tomllib
from pathlib import Path
from typing import Any
from urllib.parse import urlparse
from urllib.request import Request, urlopen
ALLOWED_HOSTS = {
"raw.githubusercontent.com",
"github.com",
"phabricator.services.mozilla.com",
"hg.mozilla.org",
"hg-edge.mozilla.org",
}
BLOCKED_TOKENS = ("fixfox", "zenodo.org/record")
class RecipeError(ValueError):
"""Invalid harvest recipe."""
def extract_function(source: str, function_name: str) -> str:
"""Copy the named function through balanced braces."""
needle = function_name
idx = 0
while True:
found = source.find(needle, idx)
if found < 0:
raise RecipeError(f"function not found: {function_name}")
before = source[found - 1] if found else " "
after_name = source[found + len(needle) : found + len(needle) + 1]
if before.isalnum() or before == "_":
idx = found + len(needle)
continue
rest = source[found + len(needle) :].lstrip()
if rest.startswith("(") or rest.startswith("<") or rest.startswith("{") or after_name in "(<{":
brace = source.find("{", found)
semi = source.find(";", found)
if brace >= 0 and (semi < 0 or brace < semi):
break
idx = found + len(needle)
line_start = source.rfind("\n", 0, found) + 1
prev_nl = source.rfind("\n", 0, line_start - 1)
prev_line = source[prev_nl + 1 : line_start]
start = line_start
stripped_prev = prev_line.strip()
if (
stripped_prev
and not stripped_prev.startswith(("/", "*", "#", "//"))
and "{" not in prev_line
and ";" not in prev_line
and not stripped_prev.startswith(("sub ", "def ", "class "))
):
start = prev_nl + 1
brace = source.find("{", found)
if brace < 0:
raise RecipeError(f"no body for function: {function_name}")
depth = 0
for pos, char in enumerate(source[brace:], brace):
if char == "{":
depth += 1
elif char == "}":
depth -= 1
if depth == 0:
return source[start : pos + 1].strip() + "\n"
raise RecipeError(f"unbalanced braces for function: {function_name}")
def provenance_header(recipe: dict[str, Any], *, side: str, sha: str) -> str:
lines = [
f"Provenance: {recipe.get('repo', '')} {recipe.get('function', '')} ({side}).",
f"repo: {recipe.get('repo', '')}",
f"commit: {sha}",
f"parent: {recipe.get('parent', '')}",
f"commit_url: {recipe.get('commit_url', '')}",
f"cve: {recipe.get('cve', '')}",
f"license: {recipe.get('license', '')}",
f"function: {recipe.get('function', '')}",
f"relpath: {recipe.get('relpath', recipe.get('path', ''))}",
]
prefix = "//" if str(recipe.get("language", "c")).startswith("c") and str(recipe.get("path", "")).endswith((".cc", ".cpp", ".java", ".js")) else "/*"
if prefix == "//":
return "\n".join(f"// {line}" for line in lines) + "\n"
return "/* " + "\n * ".join(lines) + "\n */\n"
def validate_recipe(recipe: dict[str, Any]) -> None:
name = str(recipe.get("name", ""))
if any(token in str(recipe).lower() for token in BLOCKED_TOKENS):
raise RecipeError(f"{name}: embargoed or blocked dataset")
if not recipe.get("parent") or not recipe.get("commit"):
raise RecipeError(f"{name}: advisory-only recipe rejected; parent and commit required")
if not recipe.get("path") or not recipe.get("function"):
raise RecipeError(f"{name}: path and function required")
if not recipe.get("license"):
raise RecipeError(f"{name}: license required")
def github_raw_url(repo: str, sha: str, path: str) -> str:
return f"https://raw.githubusercontent.com/{repo}/{sha}/{path}"
def excerpt_paths(recipe: dict[str, Any], root: Path) -> tuple[Path, Path]:
name = str(recipe["name"])
ext = Path(str(recipe.get("path", "a.c"))).suffix or ".c"
folder = root / name
return folder / f"vuln{ext}", folder / f"fixed{ext}"
def write_excerpt(path: Path, recipe: dict[str, Any], *, side: str, sha: str, body: str) -> None:
path.parent.mkdir(parents=True, exist_ok=True)
header = provenance_header(recipe, side=side, sha=sha)
path.write_text(header + "\n" + body, encoding="utf-8")
def harvest_recipe(recipe: dict[str, Any], root: Path) -> tuple[Path, Path]:
validate_recipe(recipe)
if str(recipe.get("host", "github")) != "github":
raise RecipeError(f"{recipe.get('name')}: live fetch currently implemented for host=github only")
parent_src = fetch_url(github_raw_url(str(recipe["repo"]), str(recipe["parent"]), str(recipe["path"])))
fix_src = fetch_url(github_raw_url(str(recipe["repo"]), str(recipe["commit"]), str(recipe["path"])))
function = str(recipe["function"])
parent_fn = extract_function(parent_src, function)
fix_fn = extract_function(fix_src, function)
vuln_path, fixed_path = excerpt_paths(recipe, root)
write_excerpt(vuln_path, recipe, side="vuln", sha=str(recipe["parent"]), body=parent_fn)
write_excerpt(fixed_path, recipe, side="fixed", sha=str(recipe["commit"]), body=fix_fn)
return vuln_path, fixed_path
def fetch_url(url: str, timeout: int = 60) -> str:
host = urlparse(url).hostname or ""
if host not in ALLOWED_HOSTS:
raise RecipeError(f"host not allowed: {host}")
request = Request(url, headers={"User-Agent": "OpenUltraSAST-vfc-harvest"})
with urlopen(request, timeout=timeout) as response: # noqa: S310 — host allowlisted
return response.read().decode("utf-8", "replace")
def load_recipes(path: Path) -> tuple[dict[str, Any], ...]:
payload = tomllib.loads(path.read_text())
return tuple(dict(item) for item in payload.get("recipe", []))
def main(argv: list[str] | None = None) -> int:
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--recipes", type=Path, default=Path(__file__).with_name("recipes.toml"))
parser.add_argument("--name", help="recipe name to harvest (omit with --all)")
parser.add_argument("--all", action="store_true", help="process every recipe")
parser.add_argument("--fetch", action="store_true", help="HTTP-fetch and write excerpts; default is dry-run validate")
parser.add_argument("--force", action="store_true", help="overwrite existing excerpts")
parser.add_argument("--out", type=Path, default=Path(__file__).resolve().parent, help="excerpt root")
args = parser.parse_args(argv)
loaded = load_recipes(args.recipes)
recipes = {str(item["name"]): item for item in loaded}
selected: list[dict[str, Any]]
if args.all:
selected = list(loaded)
elif args.name:
if args.name not in recipes:
print(f"unknown recipe: {args.name}", file=sys.stderr)
return 2
selected = [recipes[args.name]]
else:
print("pass --name RECIPE or --all", file=sys.stderr)
return 2
failures = 0
for recipe in selected:
name = str(recipe["name"])
try:
validate_recipe(recipe)
except RecipeError as exc:
print(str(exc), file=sys.stderr)
failures += 1
continue
if not args.fetch:
print(f"ok {name} parent={recipe['parent']} commit={recipe['commit']}")
continue
vuln_path, fixed_path = excerpt_paths(recipe, args.out)
if vuln_path.is_file() and fixed_path.is_file() and not args.force:
print(f"skip {name} (exists)")
continue
try:
harvest_recipe(recipe, args.out)
except RecipeError as exc:
print(f"{name}: {exc}", file=sys.stderr)
failures += 1
continue
print(f"wrote {name} -> {vuln_path.parent}")
return 1 if failures else 0
if __name__ == "__main__":
raise SystemExit(main())
benchmarks/pairs/vfc/openssl-cve-2014-0160/fixed.c
+109
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@@ -0,0 +1,109 @@
/* Provenance: OpenSSL tls1_process_heartbeat after Heartbleed bounds check.
* repo: openssl/openssl
* commit: 96db9023b881d7cd9f379b0c154650d6c108e9a3
* parent: 0d7717fc9c83dafab8153cbd5e2180e6e04cc802
* commit_url: https://github.com/openssl/openssl/commit/96db9023b881d7cd9f379b0c154650d6c108e9a3
* cve: CVE-2014-0160
* license: OpenSSL License
* function: tls1_process_heartbeat
* relpath: ssl/t1_lib.c
*/
#include <stdlib.h>
#include <string.h>
typedef struct ssl_st {
struct {
struct {
unsigned char *data;
unsigned int length;
} rrec;
} *s3;
int version;
void (*msg_callback)(int write_p, int version, int content_type, const void *buf, size_t len, void *ssl, void *arg);
void *msg_callback_arg;
unsigned int tlsext_hb_seq;
unsigned int tlsext_hb_pending;
} SSL;
#define TLS1_RT_HEARTBEAT 24
#define TLS1_HB_REQUEST 1
#define TLS1_HB_RESPONSE 2
#define n2s(c, s) ((s = (((unsigned int)((c)[0])) << 8) | (((unsigned int)((c)[1])))), (c) += 2)
#define s2n(s, c) (((c)[0] = (unsigned char)(((s) >> 8) & 0xff), (c)[1] = (unsigned char)(((s)) & 0xff)), (c) += 2)
static unsigned char *OPENSSL_malloc(unsigned int n) { return (unsigned char *)malloc(n); }
static void OPENSSL_free(void *p) { free(p); }
static int RAND_pseudo_bytes(unsigned char *buf, unsigned int n) {
(void)buf;
(void)n;
return 1;
}
static int ssl3_write_bytes(SSL *s, int type, unsigned char *buf, unsigned int len) {
(void)s;
(void)type;
(void)buf;
return (int)len;
}
int tls1_process_heartbeat(SSL *s) {
unsigned char *p = &s->s3->rrec.data[0], *pl;
unsigned short hbtype;
unsigned int payload;
unsigned int padding = 16; /* Use minimum padding */
if (s->msg_callback)
s->msg_callback(0, s->version, TLS1_RT_HEARTBEAT, &s->s3->rrec.data[0], s->s3->rrec.length, s, s->msg_callback_arg);
/* Read type and payload length first */
if (1 + 2 + 16 > s->s3->rrec.length)
return 0; /* silently discard */
hbtype = *p++;
n2s(p, payload);
if (1 + 2 + payload + 16 > s->s3->rrec.length)
return 0; /* silently discard per RFC 6520 sec. 4 */
pl = p;
if (hbtype == TLS1_HB_REQUEST) {
unsigned char *buffer, *bp;
int r;
/* Allocate memory for the response, size is 1 bytes
* message type, plus 2 bytes payload length, plus
* payload, plus padding
*/
buffer = OPENSSL_malloc(1 + 2 + payload + padding);
bp = buffer;
/* Enter response type, length and copy payload */
*bp++ = TLS1_HB_RESPONSE;
s2n(payload, bp);
memcpy(bp, pl, payload);
bp += payload;
/* Random padding */
RAND_pseudo_bytes(bp, padding);
r = ssl3_write_bytes(s, TLS1_RT_HEARTBEAT, buffer, 3 + payload + padding);
if (r >= 0 && s->msg_callback)
s->msg_callback(1, s->version, TLS1_RT_HEARTBEAT, buffer, 3 + payload + padding, s, s->msg_callback_arg);
OPENSSL_free(buffer);
if (r < 0)
return r;
} else if (hbtype == TLS1_HB_RESPONSE) {
unsigned int seq;
/* We only send sequence numbers (2 bytes unsigned int),
* and 16 random bytes, so we just try to read the
* sequence number */
n2s(pl, seq);
if (payload == 18 && seq == s->tlsext_hb_seq) {
s->tlsext_hb_seq++;
s->tlsext_hb_pending = 0;
}
}
return 0;
}
benchmarks/pairs/vfc/openssl-cve-2014-0160/vuln.c
+106
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@@ -0,0 +1,106 @@
/* Provenance: OpenSSL tls1_process_heartbeat before Heartbleed fix.
* repo: openssl/openssl
* commit: 0d7717fc9c83dafab8153cbd5e2180e6e04cc802
* parent: 0d7717fc9c83dafab8153cbd5e2180e6e04cc802
* fix: 96db9023b881d7cd9f379b0c154650d6c108e9a3
* commit_url: https://github.com/openssl/openssl/commit/96db9023b881d7cd9f379b0c154650d6c108e9a3
* cve: CVE-2014-0160
* license: OpenSSL License
* function: tls1_process_heartbeat
* relpath: ssl/t1_lib.c
*/
#include <stdlib.h>
#include <string.h>
typedef struct ssl_st {
struct {
struct {
unsigned char *data;
unsigned int length;
} rrec;
} *s3;
int version;
void (*msg_callback)(int write_p, int version, int content_type, const void *buf, size_t len, void *ssl, void *arg);
void *msg_callback_arg;
unsigned int tlsext_hb_seq;
unsigned int tlsext_hb_pending;
} SSL;
#define TLS1_RT_HEARTBEAT 24
#define TLS1_HB_REQUEST 1
#define TLS1_HB_RESPONSE 2
#define n2s(c, s) ((s = (((unsigned int)((c)[0])) << 8) | (((unsigned int)((c)[1])))), (c) += 2)
#define s2n(s, c) (((c)[0] = (unsigned char)(((s) >> 8) & 0xff), (c)[1] = (unsigned char)(((s)) & 0xff)), (c) += 2)
static unsigned char *OPENSSL_malloc(unsigned int n) { return (unsigned char *)malloc(n); }
static void OPENSSL_free(void *p) { free(p); }
static int RAND_pseudo_bytes(unsigned char *buf, unsigned int n) {
(void)buf;
(void)n;
return 1;
}
static int ssl3_write_bytes(SSL *s, int type, unsigned char *buf, unsigned int len) {
(void)s;
(void)type;
(void)buf;
return (int)len;
}
int tls1_process_heartbeat(SSL *s) {
unsigned char *p = &s->s3->rrec.data[0], *pl;
unsigned short hbtype;
unsigned int payload;
unsigned int padding = 16; /* Use minimum padding */
/* Read type and payload length first */
hbtype = *p++;
n2s(p, payload);
pl = p;
if (s->msg_callback)
s->msg_callback(0, s->version, TLS1_RT_HEARTBEAT, &s->s3->rrec.data[0], s->s3->rrec.length, s, s->msg_callback_arg);
if (hbtype == TLS1_HB_REQUEST) {
unsigned char *buffer, *bp;
int r;
/* Allocate memory for the response, size is 1 bytes
* message type, plus 2 bytes payload length, plus
* payload, plus padding
*/
buffer = OPENSSL_malloc(1 + 2 + payload + padding);
bp = buffer;
/* Enter response type, length and copy payload */
*bp++ = TLS1_HB_RESPONSE;
s2n(payload, bp);
memcpy(bp, pl, payload);
bp += payload;
/* Random padding */
RAND_pseudo_bytes(bp, padding);
r = ssl3_write_bytes(s, TLS1_RT_HEARTBEAT, buffer, 3 + payload + padding);
if (r >= 0 && s->msg_callback)
s->msg_callback(1, s->version, TLS1_RT_HEARTBEAT, buffer, 3 + payload + padding, s, s->msg_callback_arg);
OPENSSL_free(buffer);
if (r < 0)
return r;
} else if (hbtype == TLS1_HB_RESPONSE) {
unsigned int seq;
/* We only send sequence numbers (2 bytes unsigned int),
* and 16 random bytes, so we just try to read the
* sequence number */
n2s(pl, seq);
if (payload == 18 && seq == s->tlsext_hb_seq) {
s->tlsext_hb_seq++;
s->tlsext_hb_pending = 0;
}
}
return 0;
}
benchmarks/pairs/vfc/openssl-cve-2020-1967-tls1_check_sig_alg/fixed.c
+43
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@@ -0,0 +1,43 @@
/* Provenance: openssl/openssl tls1_check_sig_alg (fixed).
* repo: openssl/openssl
* commit: a87f3fe01a5a894aa27ccd6a239155fd129988e4
* parent: 3656c08ab4b1b892730cb5e808b6f4298b08a2e6
* commit_url: https://github.com/openssl/openssl/commit/a87f3fe01a5a894aa27ccd6a239155fd129988e4
* cve: CVE-2020-1967
* license: OpenSSL License
* function: tls1_check_sig_alg
* relpath: ssl/t1_lib.c
*/
static int tls1_check_sig_alg(SSL *s, X509 *x, int default_nid)
{
int sig_nid, use_pc_sigalgs = 0;
size_t i;
const SIGALG_LOOKUP *sigalg;
size_t sigalgslen;
if (default_nid == -1)
return 1;
sig_nid = X509_get_signature_nid(x);
if (default_nid)
return sig_nid == default_nid ? 1 : 0;
if (SSL_IS_TLS13(s) && s->s3.tmp.peer_cert_sigalgs != NULL) {
/*
* If we're in TLSv1.3 then we only get here if we're checking the
* chain. If the peer has specified peer_cert_sigalgs then we use them
* otherwise we default to normal sigalgs.
*/
sigalgslen = s->s3.tmp.peer_cert_sigalgslen;
use_pc_sigalgs = 1;
} else {
sigalgslen = s->shared_sigalgslen;
}
for (i = 0; i < sigalgslen; i++) {
sigalg = use_pc_sigalgs
? tls1_lookup_sigalg(s->s3.tmp.peer_cert_sigalgs[i])
: s->shared_sigalgs[i];
if (sigalg != NULL && sig_nid == sigalg->sigandhash)
return 1;
}
return 0;
}
benchmarks/pairs/vfc/openssl-cve-2020-1967-tls1_check_sig_alg/vuln.c
+43
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@@ -0,0 +1,43 @@
/* Provenance: openssl/openssl tls1_check_sig_alg (vuln).
* repo: openssl/openssl
* commit: 3656c08ab4b1b892730cb5e808b6f4298b08a2e6
* parent: 3656c08ab4b1b892730cb5e808b6f4298b08a2e6
* commit_url: https://github.com/openssl/openssl/commit/a87f3fe01a5a894aa27ccd6a239155fd129988e4
* cve: CVE-2020-1967
* license: OpenSSL License
* function: tls1_check_sig_alg
* relpath: ssl/t1_lib.c
*/
static int tls1_check_sig_alg(SSL *s, X509 *x, int default_nid)
{
int sig_nid, use_pc_sigalgs = 0;
size_t i;
const SIGALG_LOOKUP *sigalg;
size_t sigalgslen;
if (default_nid == -1)
return 1;
sig_nid = X509_get_signature_nid(x);
if (default_nid)
return sig_nid == default_nid ? 1 : 0;
if (SSL_IS_TLS13(s) && s->s3.tmp.peer_cert_sigalgs != NULL) {
/*
* If we're in TLSv1.3 then we only get here if we're checking the
* chain. If the peer has specified peer_cert_sigalgs then we use them
* otherwise we default to normal sigalgs.
*/
sigalgslen = s->s3.tmp.peer_cert_sigalgslen;
use_pc_sigalgs = 1;
} else {
sigalgslen = s->shared_sigalgslen;
}
for (i = 0; i < sigalgslen; i++) {
sigalg = use_pc_sigalgs
? tls1_lookup_sigalg(s->s3.tmp.peer_cert_sigalgs[i])
: s->shared_sigalgs[i];
if (sig_nid == sigalg->sigandhash)
return 1;
}
return 0;
}
benchmarks/pairs/vfc/openssl-cve-2020-1967/fixed.c
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/* Provenance: openssl/openssl tls1_check_sig_alg (fixed).
* repo: openssl/openssl
* commit: a87f3fe01a5a894aa27ccd6a239155fd129988e4
* parent: 3656c08ab4b1b892730cb5e808b6f4298b08a2e6
* commit_url: https://github.com/openssl/openssl/commit/a87f3fe01a5a894aa27ccd6a239155fd129988e4
* cve: CVE-2020-1967
* license: OpenSSL License
* function: tls1_check_sig_alg
* relpath: ssl/t1_lib.c
*/
static int tls1_check_sig_alg(SSL *s, X509 *x, int default_nid)
{
int sig_nid, use_pc_sigalgs = 0;
size_t i;
const SIGALG_LOOKUP *sigalg;
size_t sigalgslen;
if (default_nid == -1)
return 1;
sig_nid = X509_get_signature_nid(x);
if (default_nid)
return sig_nid == default_nid ? 1 : 0;
if (SSL_IS_TLS13(s) && s->s3.tmp.peer_cert_sigalgs != NULL) {
/*
* If we're in TLSv1.3 then we only get here if we're checking the
* chain. If the peer has specified peer_cert_sigalgs then we use them
* otherwise we default to normal sigalgs.
*/
sigalgslen = s->s3.tmp.peer_cert_sigalgslen;
use_pc_sigalgs = 1;
} else {
sigalgslen = s->shared_sigalgslen;
}
for (i = 0; i < sigalgslen; i++) {
sigalg = use_pc_sigalgs
? tls1_lookup_sigalg(s->s3.tmp.peer_cert_sigalgs[i])
: s->shared_sigalgs[i];
if (sigalg != NULL && sig_nid == sigalg->sigandhash)
return 1;
}
return 0;
}
benchmarks/pairs/vfc/openssl-cve-2020-1967/vuln.c
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/* Provenance: openssl/openssl tls1_check_sig_alg (vuln).
* repo: openssl/openssl
* commit: 3656c08ab4b1b892730cb5e808b6f4298b08a2e6
* parent: 3656c08ab4b1b892730cb5e808b6f4298b08a2e6
* commit_url: https://github.com/openssl/openssl/commit/a87f3fe01a5a894aa27ccd6a239155fd129988e4
* cve: CVE-2020-1967
* license: OpenSSL License
* function: tls1_check_sig_alg
* relpath: ssl/t1_lib.c
*/
static int tls1_check_sig_alg(SSL *s, X509 *x, int default_nid)
{
int sig_nid, use_pc_sigalgs = 0;
size_t i;
const SIGALG_LOOKUP *sigalg;
size_t sigalgslen;
if (default_nid == -1)
return 1;
sig_nid = X509_get_signature_nid(x);
if (default_nid)
return sig_nid == default_nid ? 1 : 0;
if (SSL_IS_TLS13(s) && s->s3.tmp.peer_cert_sigalgs != NULL) {
/*
* If we're in TLSv1.3 then we only get here if we're checking the
* chain. If the peer has specified peer_cert_sigalgs then we use them
* otherwise we default to normal sigalgs.
*/
sigalgslen = s->s3.tmp.peer_cert_sigalgslen;
use_pc_sigalgs = 1;
} else {
sigalgslen = s->shared_sigalgslen;
}
for (i = 0; i < sigalgslen; i++) {
sigalg = use_pc_sigalgs
? tls1_lookup_sigalg(s->s3.tmp.peer_cert_sigalgs[i])
: s->shared_sigalgs[i];
if (sig_nid == sigalg->sigandhash)
return 1;
}
return 0;
}
benchmarks/pairs/vfc/openssl-cve-2020-1971-general_name_cmp/fixed.c
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/* Provenance: openssl/openssl GENERAL_NAME_cmp (fixed).
* repo: openssl/openssl
* commit: f960d81215ebf3f65e03d4d5d857fb9b666d6920
* parent: aa0ad2011d3e7ad8a611da274ef7d9c7706e289b
* commit_url: https://github.com/openssl/openssl/commit/f960d81215ebf3f65e03d4d5d857fb9b666d6920
* cve: CVE-2020-1971
* license: OpenSSL License
* function: GENERAL_NAME_cmp
* relpath: crypto/x509v3/v3_genn.c
*/
int GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b)
{
int result = -1;
if (!a || !b || a->type != b->type)
return -1;
switch (a->type) {
case GEN_X400:
result = ASN1_TYPE_cmp(a->d.x400Address, b->d.x400Address);
break;
case GEN_EDIPARTY:
result = edipartyname_cmp(a->d.ediPartyName, b->d.ediPartyName);
break;
case GEN_OTHERNAME:
result = OTHERNAME_cmp(a->d.otherName, b->d.otherName);
break;
case GEN_EMAIL:
case GEN_DNS:
case GEN_URI:
result = ASN1_STRING_cmp(a->d.ia5, b->d.ia5);
break;
case GEN_DIRNAME:
result = X509_NAME_cmp(a->d.dirn, b->d.dirn);
break;
case GEN_IPADD:
result = ASN1_OCTET_STRING_cmp(a->d.ip, b->d.ip);
break;
case GEN_RID:
result = OBJ_cmp(a->d.rid, b->d.rid);
break;
}
return result;
}

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