CVEs-PoC/2021/CVE-2021-21805.md

### [CVE-2021-21805](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21805)
![](https://img.shields.io/static/v1?label=Product&message=Advantech&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Advantech%20R-SeeNet%202.4.12%20(20.10.2020)%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-78%3A%20Improper%20Neutralization%20of%20Special%20Elements%20used%20in%20an%20OS%20Command%20('OS%20Command%20Injection')&color=brightgreen)

### Description

An OS Command Injection vulnerability exists in the ping.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). A specially crafted HTTP request can lead to arbitrary OS command execution. An attacker can send a crafted HTTP request to trigger this vulnerability.

### POC

#### Reference
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1274

#### Github
- https://github.com/20142995/nuclei-templates
- https://github.com/ARPSyndicate/cvemon
- https://github.com/ARPSyndicate/kenzer-templates
- https://github.com/Live-Hack-CVE/CVE-2021-21805