CVEs-PoC/2021/CVE-2021-36531.md

### [CVE-2021-36531](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36531)
![](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

ngiflib 0.4 has a heap overflow in GetByte() at ngiflib.c:70 in NGIFLIB_NO_FILE mode, GetByte() reads memory buffer without checking the boundary.

### POC

#### Reference
- https://github.com/miniupnp/ngiflib/issues/18

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Marsman1996/pocs