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From 1b6dc2b543446401fd38795f1ccf2b93633f01c0 Mon Sep 17 00:00:00 2001
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From: Daniel Stenberg <daniel@haxx.se>
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Date: Sun, 31 Jul 2016 00:51:48 +0200
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Subject: [PATCH 1/2] TLS: only reuse connections with the same client cert
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CVE-2016-5420
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Bug: https://curl.haxx.se/docs/adv_20160803B.html
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Upstream-commit: 11ec5ad4352bba384404c56e77c7fab9382fd22d
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Signed-off-by: Kamil Dudka <kdudka@redhat.com>
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---
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lib/sslgen.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/lib/sslgen.c b/lib/sslgen.c
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index 3036bb2..79cbb6f 100644
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--- a/lib/sslgen.c
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+++ b/lib/sslgen.c
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@@ -90,6 +90,7 @@ Curl_ssl_config_matches(struct ssl_config_data* data,
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(data->verifyhost == needle->verifyhost) &&
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safe_strequal(data->CApath, needle->CApath) &&
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safe_strequal(data->CAfile, needle->CAfile) &&
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+ safe_strequal(data->clientcert, needle->clientcert) &&
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safe_strequal(data->random_file, needle->random_file) &&
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safe_strequal(data->egdsocket, needle->egdsocket) &&
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safe_strequal(data->cipher_list, needle->cipher_list))
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--
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2.5.5
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From 1a7116f8607868b26355c512e5844a9b85f16daf Mon Sep 17 00:00:00 2001
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From: Kamil Dudka <kdudka@redhat.com>
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Date: Mon, 22 Aug 2016 10:24:35 +0200
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Subject: [PATCH 2/2] nss: refuse previously loaded certificate from file
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... when we are not asked to use a certificate from file
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Upstream-commit: 7700fcba64bf5806de28f6c1c7da3b4f0b38567d
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Signed-off-by: Kamil Dudka <kdudka@redhat.com>
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---
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lib/nss.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/lib/nss.c b/lib/nss.c
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index 1f02988..7b4fe57 100644
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--- a/lib/nss.c
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+++ b/lib/nss.c
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@@ -760,10 +760,10 @@ static SECStatus SelectClientCert(void *arg, PRFileDesc *sock,
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struct ssl_connect_data *connssl = (struct ssl_connect_data *)arg;
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struct SessionHandle *data = connssl->data;
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const char *nickname = connssl->client_nickname;
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+ static const char pem_slotname[] = "PEM Token #1";
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if(connssl->obj_clicert) {
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/* use the cert/key provided by PEM reader */
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- static const char pem_slotname[] = "PEM Token #1";
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SECItem cert_der = { 0, NULL, 0 };
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void *proto_win = SSL_RevealPinArg(sock);
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struct CERTCertificateStr *cert;
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@@ -825,6 +825,12 @@ static SECStatus SelectClientCert(void *arg, PRFileDesc *sock,
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if(NULL == nickname)
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nickname = "[unknown]";
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+ if(!strncmp(nickname, pem_slotname, sizeof(pem_slotname) - 1U)) {
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+ failf(data, "NSS: refusing previously loaded certificate from file: %s",
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+ nickname);
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+ return SECFailure;
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+ }
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+
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if(NULL == *pRetKey) {
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failf(data, "NSS: private key not found for certificate: %s", nickname);
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return SECFailure;
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--
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2.7.4
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