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-rw-r--r--lib/curl_sasl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/curl_sasl.c b/lib/curl_sasl.c
index d07387d47..c3f2d43f0 100644
--- a/lib/curl_sasl.c
+++ b/lib/curl_sasl.c
@@ -283,6 +283,9 @@ CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
if(result)
return result;
+ if(!chlg)
+ return CURLE_LOGIN_DENIED;
+
/* Retrieve nonce string from the challenge */
if(!sasl_digest_get_key_value(chlg, "nonce=\"", nonce,
sizeof(nonce), '\"')) {