CVEs-PoC/2020/CVE-2020-12422.md

### [CVE-2020-12422](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12422)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2078%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Integer%20overflow%20in%20nsJPEGEncoder%3A%3AemptyOutputBuffer&color=brighgreen)

### Description

In non-standard configurations, a JPEG image created by JavaScript could have caused an internal variable to overflow, resulting in an out of bounds write, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 78.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1450353

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