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From aeb1a281cab13c7ba791cb104e556b20e713941f Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 20 Aug 2024 16:14:39 +0200
Subject: [PATCH] gtls: fix OCSP stapling management
Reported-by: Hiroki Kurosawa
Closes #14642
Upstream-Status: Backport [https://github.com/curl/curl/commit/aeb1a281cab13c7ba791cb104e556b20e713941f]
CVE: CVE-2024-8096
Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
---
lib/vtls/gtls.c | 146 ++++++++++++++++++++++++------------------------
1 file changed, 73 insertions(+), 73 deletions(-)
diff --git a/lib/vtls/gtls.c b/lib/vtls/gtls.c
index 6eaa6a8..7dd7df8 100644
--- a/lib/vtls/gtls.c
+++ b/lib/vtls/gtls.c
@@ -538,6 +538,13 @@ CURLcode gtls_client_init(struct Curl_easy *data,
init_flags |= GNUTLS_NO_TICKETS;
#endif
+#if defined(GNUTLS_NO_STATUS_REQUEST)
+ if(!config->verifystatus)
+ /* Disable the "status_request" TLS extension, enabled by default since
+ GnuTLS 3.8.0. */
+ init_flags |= GNUTLS_NO_STATUS_REQUEST;
+#endif
+
rc = gnutls_init(>ls->session, init_flags);
if(rc != GNUTLS_E_SUCCESS) {
failf(data, "gnutls_init() failed: %d", rc);
@@ -923,104 +930,97 @@ Curl_gtls_verifyserver(struct Curl_easy *data,
infof(data, " server certificate verification SKIPPED");
if(config->verifystatus) {
- if(gnutls_ocsp_status_request_is_checked(session, 0) == 0) {
- gnutls_datum_t status_request;
- gnutls_ocsp_resp_t ocsp_resp;
+ gnutls_datum_t status_request;
+ gnutls_ocsp_resp_t ocsp_resp;
+ gnutls_ocsp_cert_status_t status;
+ gnutls_x509_crl_reason_t reason;
- gnutls_ocsp_cert_status_t status;
- gnutls_x509_crl_reason_t reason;
+ rc = gnutls_ocsp_status_request_get(session, &status_request);
- rc = gnutls_ocsp_status_request_get(session, &status_request);
+ if(rc == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
+ failf(data, "No OCSP response received");
+ return CURLE_SSL_INVALIDCERTSTATUS;
+ }
- infof(data, " server certificate status verification FAILED");
+ if(rc < 0) {
+ failf(data, "Invalid OCSP response received");
+ return CURLE_SSL_INVALIDCERTSTATUS;
+ }
- if(rc == GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE) {
- failf(data, "No OCSP response received");
- return CURLE_SSL_INVALIDCERTSTATUS;
- }
+ gnutls_ocsp_resp_init(&ocsp_resp);
- if(rc < 0) {
- failf(data, "Invalid OCSP response received");
- return CURLE_SSL_INVALIDCERTSTATUS;
- }
+ rc = gnutls_ocsp_resp_import(ocsp_resp, &status_request);
+ if(rc < 0) {
+ failf(data, "Invalid OCSP response received");
+ return CURLE_SSL_INVALIDCERTSTATUS;
+ }
- gnutls_ocsp_resp_init(&ocsp_resp);
+ (void)gnutls_ocsp_resp_get_single(ocsp_resp, 0, NULL, NULL, NULL, NULL,
+ &status, NULL, NULL, NULL, &reason);
- rc = gnutls_ocsp_resp_import(ocsp_resp, &status_request);
- if(rc < 0) {
- failf(data, "Invalid OCSP response received");
- return CURLE_SSL_INVALIDCERTSTATUS;
- }
+ switch(status) {
+ case GNUTLS_OCSP_CERT_GOOD:
+ break;
- (void)gnutls_ocsp_resp_get_single(ocsp_resp, 0, NULL, NULL, NULL, NULL,
- &status, NULL, NULL, NULL, &reason);
+ case GNUTLS_OCSP_CERT_REVOKED: {
+ const char *crl_reason;
- switch(status) {
- case GNUTLS_OCSP_CERT_GOOD:
+ switch(reason) {
+ default:
+ case GNUTLS_X509_CRLREASON_UNSPECIFIED:
+ crl_reason = "unspecified reason";
break;
- case GNUTLS_OCSP_CERT_REVOKED: {
- const char *crl_reason;
-
- switch(reason) {
- default:
- case GNUTLS_X509_CRLREASON_UNSPECIFIED:
- crl_reason = "unspecified reason";
- break;
-
- case GNUTLS_X509_CRLREASON_KEYCOMPROMISE:
- crl_reason = "private key compromised";
- break;
-
- case GNUTLS_X509_CRLREASON_CACOMPROMISE:
- crl_reason = "CA compromised";
- break;
-
- case GNUTLS_X509_CRLREASON_AFFILIATIONCHANGED:
- crl_reason = "affiliation has changed";
- break;
+ case GNUTLS_X509_CRLREASON_KEYCOMPROMISE:
+ crl_reason = "private key compromised";
+ break;
- case GNUTLS_X509_CRLREASON_SUPERSEDED:
- crl_reason = "certificate superseded";
- break;
+ case GNUTLS_X509_CRLREASON_CACOMPROMISE:
+ crl_reason = "CA compromised";
+ break;
- case GNUTLS_X509_CRLREASON_CESSATIONOFOPERATION:
- crl_reason = "operation has ceased";
- break;
+ case GNUTLS_X509_CRLREASON_AFFILIATIONCHANGED:
+ crl_reason = "affiliation has changed";
+ break;
- case GNUTLS_X509_CRLREASON_CERTIFICATEHOLD:
- crl_reason = "certificate is on hold";
- break;
+ case GNUTLS_X509_CRLREASON_SUPERSEDED:
+ crl_reason = "certificate superseded";
+ break;
- case GNUTLS_X509_CRLREASON_REMOVEFROMCRL:
- crl_reason = "will be removed from delta CRL";
- break;
+ case GNUTLS_X509_CRLREASON_CESSATIONOFOPERATION:
+ crl_reason = "operation has ceased";
+ break;
- case GNUTLS_X509_CRLREASON_PRIVILEGEWITHDRAWN:
- crl_reason = "privilege withdrawn";
- break;
+ case GNUTLS_X509_CRLREASON_CERTIFICATEHOLD:
+ crl_reason = "certificate is on hold";
+ break;
- case GNUTLS_X509_CRLREASON_AACOMPROMISE:
- crl_reason = "AA compromised";
- break;
- }
+ case GNUTLS_X509_CRLREASON_REMOVEFROMCRL:
+ crl_reason = "will be removed from delta CRL";
+ break;
- failf(data, "Server certificate was revoked: %s", crl_reason);
+ case GNUTLS_X509_CRLREASON_PRIVILEGEWITHDRAWN:
+ crl_reason = "privilege withdrawn";
break;
- }
- default:
- case GNUTLS_OCSP_CERT_UNKNOWN:
- failf(data, "Server certificate status is unknown");
+ case GNUTLS_X509_CRLREASON_AACOMPROMISE:
+ crl_reason = "AA compromised";
break;
}
- gnutls_ocsp_resp_deinit(ocsp_resp);
+ failf(data, "Server certificate was revoked: %s", crl_reason);
+ break;
+ }
+
+ default:
+ case GNUTLS_OCSP_CERT_UNKNOWN:
+ failf(data, "Server certificate status is unknown");
+ break;
+ }
+ gnutls_ocsp_resp_deinit(ocsp_resp);
+ if(status != GNUTLS_OCSP_CERT_GOOD)
return CURLE_SSL_INVALIDCERTSTATUS;
- }
- else
- infof(data, " server certificate status verification OK");
}
else
infof(data, " server certificate status verification SKIPPED");
--
2.25.1
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