CVEs-PoC/2021/CVE-2021-33816.md

### [CVE-2021-33816](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33816)
![](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

The website builder module in Dolibarr 13.0.2 allows remote PHP code execution because of an incomplete protection mechanism in which system, exec, and shell_exec are blocked but backticks are not blocked.

### POC

#### Reference
- http://seclists.org/fulldisclosure/2021/Nov/39
- https://trovent.github.io/security-advisories/TRSA-2106-01/TRSA-2106-01.txt
- https://trovent.io/security-advisory-2106-01

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