mirror of
https://github.com/norandom/OpenUltraSAST.git
synced 2026-10-18 04:29:27 +00:00
Marius Ciepluch
0116f9bea6
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.
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
/* Provenance: openssl/openssl check_cert_usable (fixed).
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* repo: openssl/openssl
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* commit: 1e8c398db67404babd3e5af999bb6bd86f720c76
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* parent: f636f9ca0fa1bae5b42f9e787f025c96fb09c43a
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* commit_url: https://github.com/openssl/openssl/commit/1e8c398db67404babd3e5af999bb6bd86f720c76
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* cve: CVE-2026-14457
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* license: Apache-2.0
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* function: check_cert_usable
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* relpath: ssl/t1_lib.c
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*/
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static int check_cert_usable(SSL_CONNECTION *s, const SIGALG_LOOKUP *sig,
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X509 *x, EVP_PKEY *pkey)
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{
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const SIGALG_LOOKUP *lu;
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int mdnid, pknid, supported;
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size_t i;
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const char *mdname = NULL;
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SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(s);
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/*
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* If the given EVP_PKEY cannot support signing with this digest,
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* the answer is simply 'no'.
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*/
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if (sig->hash != NID_undef)
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mdname = OBJ_nid2sn(sig->hash);
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supported = EVP_PKEY_digestsign_supports_digest(pkey, sctx->libctx,
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mdname,
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sctx->propq);
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if (supported <= 0)
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return 0;
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/*
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* When RPK is negotiated there are no certificate signatures to
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* constrain, and there may not even be a certificate configured.
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*/
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if (TLSEXT_cert_type_rpk == (s->server ? s->ext.server_cert_type : s->ext.client_cert_type))
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return 1;
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/*
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* RPK was enabled, adding candidate private-key-only slots, but was not
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* negotiated, so the key-only slot is not usable.
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*/
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if (x == NULL)
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return 0;
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/*
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* The TLS 1.3 signature_algorithms_cert extension places restrictions
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* on the sigalg with which the certificate was signed (by its issuer).
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*/
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if (s->s3.tmp.peer_cert_sigalgs != NULL) {
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if (!X509_get_signature_info(x, &mdnid, &pknid, NULL, NULL))
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return 0;
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for (i = 0; i < s->s3.tmp.peer_cert_sigalgslen; i++) {
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lu = tls1_lookup_sigalg(s, s->s3.tmp.peer_cert_sigalgs[i]);
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if (lu == NULL)
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continue;
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/*
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* This does not differentiate between the
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* rsa_pss_pss_* and rsa_pss_rsae_* schemes since we do not
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* have a chain here that lets us look at the key OID in the
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* signing certificate.
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*/
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if (mdnid == lu->hash && pknid == lu->sig)
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return 1;
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}
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return 0;
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}
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/*
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* Without signat_algorithms_cert, any certificate for which we have
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* a viable public key is permitted.
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*/
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return 1;
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}
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