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authorMarc Hoersken <info@marc-hoersken.de>2014-04-18 22:36:12 +0200
committerMarc Hoersken <info@marc-hoersken.de>2014-04-18 22:36:12 +0200
commita703914e60becbc204350df178d4323af8436637 (patch)
tree562b71a0083b5288fb364e9b79278845b337c370
parent0115ec2f1368338fe4716b16d5d770650ecfb618 (diff)
curl_schannel.c: fix possible dereference of null pointer
-rw-r--r--lib/vtls/curl_schannel.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/vtls/curl_schannel.c b/lib/vtls/curl_schannel.c
index 701fa556c..82e088c7b 100644
--- a/lib/vtls/curl_schannel.c
+++ b/lib/vtls/curl_schannel.c
@@ -310,6 +310,9 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
infof(data, "schannel: SSL/TLS connection with %s port %hu (step 2/3)\n",
conn->host.name, conn->remote_port);
+ if(!connssl->cred || !connssl->ctxt)
+ return CURLE_SSL_CONNECT_ERROR;
+
/* buffer to store previously received and encrypted data */
if(connssl->encdata_buffer == NULL) {
connssl->encdata_offset = 0;
@@ -508,6 +511,9 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
infof(data, "schannel: SSL/TLS connection with %s port %hu (step 3/3)\n",
conn->host.name, conn->remote_port);
+ if(!connssl->cred)
+ return CURLE_SSL_CONNECT_ERROR;
+
/* check if the required context attributes are met */
if(connssl->ret_flags != connssl->req_flags) {
if(!(connssl->ret_flags & ISC_RET_SEQUENCE_DETECT))