libcurl contains a heap buffer out-of-bounds read flaw.
The function handling incoming NTLM type-2 messages
(lib/vauth/ntlm.c:ntlm_decode_type2_target) does not validate incoming data
correctly and is subject to an integer overflow vulnerability.
Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.
{
"CWE": {
"desc": "Out-of-bounds Read",
"id": "CWE-125"
},
"affects": "both",
"last_affected": "7.63.0",
"URL": "https://curl.se/docs/CVE-2018-16890.json",
"package": "curl",
"www": "https://curl.se/docs/CVE-2018-16890.html",
"severity": "Medium"
}