cve/2020/CVE-2020-13904.md

### [CVE-2020-13904](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13904)
![](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

FFmpeg 2.8 and 4.2.3 has a use-after-free via a crafted EXTINF duration in an m3u8 file because parse_playlist in libavformat/hls.c frees a pointer, and later that pointer is accessed in av_probe_input_format3 in libavformat/format.c.

### POC

#### Reference
- https://trac.ffmpeg.org/ticket/8673
- https://trac.ffmpeg.org/ticket/8673

#### Github
- https://github.com/Live-Hack-CVE/CVE-2020-13904