cve/2021/CVE-2021-23177.md

### [CVE-2021-23177](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23177)
![](https://img.shields.io/static/v1?label=Product&message=libarchive&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-59%20-%20Improper%20Link%20Resolution%20Before%20File%20Access%20('Link%20Following')&color=brighgreen)

### Description

An improper link resolution flaw while extracting an archive can lead to changing the access control list (ACL) of the target of the link. An attacker may provide a malicious archive to a victim user, who would trigger this flaw when trying to extract the archive. A local attacker may use this flaw to change the ACL of a file on the system and gain more privileges.

### POC

#### Reference
No PoCs from references.

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