CVEs-PoC/2020/CVE-2020-20277.md

### [CVE-2020-20277](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-20277)
![](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

There are multiple unauthenticated directory traversal vulnerabilities in different FTP commands in uftpd FTP server versions 2.7 to 2.10 due to improper implementation of a chroot jail in common.c's compose_abspath function that can be abused to read or write to arbitrary files on the filesystem, leak process memory, or potentially lead to remote code execution.

### POC

#### Reference
- http://packetstormsecurity.com/files/167908/uftpd-2.10-Directory-Traversal.html
- https://arinerron.com/blog/posts/6

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Live-Hack-CVE/CVE-2020-20277