CVEs-PoC/2017/CVE-2017-12923.md

### [CVE-2017-12923](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12923)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

OLEStream::WriteVT_LPSTR in olestrm.cpp in libfpx 1.3.1_p6 allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted fpx image.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2017/08/17/9
- https://blogs.gentoo.org/ago/2017/08/09/libfpx-null-pointer-dereference-in-olestreamwritevt_lpstr-olestrm-cpp/

#### Github
No PoCs found on GitHub currently.