cve/2019/CVE-2019-17455.md

### [CVE-2019-17455](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17455)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### 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://gitlab.com/jas/libntlm/issues/2

#### Github
- https://github.com/jas4711/libntlm