ASA-2019-00041 – curl: NTLM type-2 out-of-bounds buffer read

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.