cve/2018/CVE-2018-7557.md

### [CVE-2018-7557](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7557)
![](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

The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.

### POC

#### Reference
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96
- https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96
- https://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae
- https://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae

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