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Files
zyxel-vmg8825_b50b-cfw/package/network/utils/curl/patches/205-CVE-2020-8286.patch
T
2026-04-17 18:33:03 +02:00

115 lines
3.4 KiB
Diff

Index: curl-7.72.0/lib/vtls/openssl.c
===================================================================
--- curl-7.72.0.orig/lib/vtls/openssl.c 2020-08-19 15:36:36.000000000 +0800
+++ curl-7.72.0/lib/vtls/openssl.c 2021-01-18 17:00:51.524695933 +0800
@@ -1777,6 +1777,11 @@
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);
@@ -1845,43 +1850,63 @@
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;
+ /* 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);
- infof(data, "SSL certificate status: %s (%d)\n",
- OCSP_cert_status_str(cert_status), cert_status);
+ if(!id) {
+ failf(data, "Error computing OCSP ID");
+ result = CURLE_SSL_INVALIDCERTSTATUS;
+ goto end;
+ }
- 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;
- }
+ /* 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: