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-rw-r--r--lib/curl_ntlm_core.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/curl_ntlm_core.c b/lib/curl_ntlm_core.c
index e27cab353..922e85a92 100644
--- a/lib/curl_ntlm_core.c
+++ b/lib/curl_ntlm_core.c
@@ -557,8 +557,11 @@ CURLcode Curl_ntlm_core_mk_nt_hash(struct Curl_easy *data,
unsigned char *ntbuffer /* 21 bytes */)
{
size_t len = strlen(password);
- unsigned char *pw = len ? malloc(len * 2) : strdup("");
+ unsigned char *pw;
CURLcode result;
+ if(len > SIZE_T_MAX/2) /* avoid integer overflow */
+ return CURLE_OUT_OF_MEMORY;
+ pw = len ? malloc(len * 2) : strdup("");
if(!pw)
return CURLE_OUT_OF_MEMORY;