CVEs-PoC/2021/CVE-2021-24002.md

### [CVE-2021-24002](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24002)
![](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%2078.10%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=%3C%2088%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Arbitrary%20FTP%20command%20execution%20on%20FTP%20servers%20using%20an%20encoded%20URL&color=brighgreen)

### Description

When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1702374

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