CVEs-PoC/2021/CVE-2021-42561.md

### [CVE-2021-42561](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42561)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python "os.system" function. This allows attackers to use shell metacharacters (e.g., backticks "``" or dollar parenthesis "$()" ) in order to escape the current command and execute arbitrary shell commands.

### POC

#### Reference
- https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20Caldera
- https://github.com/mitre/caldera/releases

#### Github
- https://github.com/ARPSyndicate/cve-scores
- https://github.com/mbadanoiu/CVE-2021-42561