CVEs-PoC/2020/CVE-2020-6805.md

### [CVE-2020-6805](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6805)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20ESR&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Thunderbird&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2068.6%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2074%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Use-after-free%20when%20removing%20data%20about%20origins&color=brighgreen)

### Description

When removing data about an origin whose tab was recently closed, a use-after-free could occur in the Quota manager, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.

### POC

#### Reference
- https://usn.ubuntu.com/4328-1/

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