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From 247d890da88f9ee817079e246c59f3d7d12fde5f Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 1 Jul 2016 13:32:31 +0200
Subject: [PATCH] TLS: switch off SSL session id when client cert is used


Bug: https://curl.haxx.se/docs/adv_20160803A.html
Reported-by: Bru Rom
Contributions-by: Eric Rescorla and Ray Satiro

Upstream-Status: Backport
https://curl.haxx.se/CVE-2016-5419.patch

CVE: CVE-2016-5419
Signed-off-by: Maxin B. John <maxin.john@intel.com>
---
 lib/url.c       |  1 +
 lib/urldata.h   |  1 +
 lib/vtls/vtls.c | 10 ++++++++++
 3 files changed, 12 insertions(+)

diff --git a/lib/url.c b/lib/url.c
index 258a286..e547e5c 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -6123,6 +6123,7 @@ static CURLcode create_conn(struct Curl_easy *data,
   data->set.ssl.random_file = data->set.str[STRING_SSL_RANDOM_FILE];
   data->set.ssl.egdsocket = data->set.str[STRING_SSL_EGDSOCKET];
   data->set.ssl.cipher_list = data->set.str[STRING_SSL_CIPHER_LIST];
+  data->set.ssl.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];
diff --git a/lib/urldata.h b/lib/urldata.h
index 611c5a7..3cf7ed9 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -351,6 +351,7 @@ struct ssl_config_data {
   char *CAfile;          /* certificate to verify peer against */
   const char *CRLfile;   /* CRL to check certificate revocation */
   const char *issuercert;/* optional issuer certificate filename */
+  char *clientcert;
   char *random_file;     /* path to file containing "random" data */
   char *egdsocket;       /* path to file containing the EGD daemon socket */
   char *cipher_list;     /* list of ciphers to use */
diff --git a/lib/vtls/vtls.c b/lib/vtls/vtls.c
index d3e41cd..33e209d 100644
--- a/lib/vtls/vtls.c
+++ b/lib/vtls/vtls.c
@@ -156,6 +156,15 @@ Curl_clone_ssl_config(struct ssl_config_data *source,
   else
     dest->random_file = NULL;
 
+  if(source->clientcert) {
+    dest->clientcert = strdup(source->clientcert);
+    if(!dest->clientcert)
+      return FALSE;
+    dest->sessionid = FALSE;
+  }
+  else
+    dest->clientcert = NULL;
+
   return TRUE;
 }
 
@@ -166,6 +175,7 @@ void Curl_free_ssl_config(struct ssl_config_data* sslc)
   Curl_safefree(sslc->cipher_list);
   Curl_safefree(sslc->egdsocket);
   Curl_safefree(sslc->random_file);
+  Curl_safefree(sslc->clientcert);
 }
 
 
-- 
2.4.0