CVEs-PoC/2019/CVE-2019-17455.md

CVE-2019-17455

Description

Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in buildSmbNtlmAuthRequest in smbutil.c for a crafted NTLM request.

POC

Reference

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145
• https://gitlab.com/jas/libntlm/issues/2
• https://gitlab.com/jas/libntlm/issues/2

Github

• https://github.com/jas4711/libntlm