cve/2015/CVE-2015-6818.md

### [CVE-2015-6818](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6818)
![](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_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks.

### POC

#### Reference
- http://ffmpeg.org/security.html
- http://www.ubuntu.com/usn/USN-2944-1

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