CVEs-PoC/2021/CVE-2021-31847.md

### [CVE-2021-31847](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31847)
![](https://img.shields.io/static/v1?label=Product&message=McAfee%20Agent%20for%20Windows&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3C%205.7.4%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-269%3A%20Improper%20Privilege%20Management&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-347%3A%20Improper%20Verification%20of%20Cryptographic%20Signature%20&color=brighgreen)

### Description

Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.

### POC

#### Reference
- https://kc.mcafee.com/corporate/index?page=content&id=SB10369

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