### [CVE-2018-6211](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6211)
![](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

On D-Link DIR-620 devices with a certain customized (by ISP) variant of firmware 1.0.3, 1.0.37, 1.3.1, 1.3.3, 1.3.7, 1.4.0, and 2.0.22, OS command injection is possible as a result of incorrect processing of the res_buf parameter to index.cgi.

### POC

#### Reference
- https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html
- https://securityaffairs.co/wordpress/72839/hacking/d-link-dir-620-flaws.html
- https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/
- https://www.bleepingcomputer.com/news/security/backdoor-account-found-in-d-link-dir-620-routers/

#### Github
- https://github.com/ARPSyndicate/cvemon