CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/BugVex/Poison-HTB-Report

Associated Vulnerability

Title:polkit 缓冲区错误漏洞 (CVE-2021-4034)
Description:polkit是一个在类 Unix操作系统中控制系统范围权限的组件。通过定义和审核权限规则，实现不同优先级进程间的通讯。 polkit 的 pkexec application存在缓冲区错误漏洞，攻击者可利用该漏洞通过精心设计环境变量诱导pkexec执行任意代码。成功执行攻击后，如果目标计算机上没有权限的用户拥有管理权限，攻击可能会导致本地权限升级。

Description

Privilege Escalation on HTB "Poison" using PwnKit (CVE-2021-4034)

Readme

# Poison-HTB-Report
Privilege Escalation on HTB "Poison" using PwnKit (CVE-2021-4034)

# HTB "Poison" - Privilege Escalation Report (BugVex)

This repository contains a full vulnerability report on the Hack The Box machine **Poison**.

## 🔍 Exploit Summary

- **CVE:** CVE-2021-4034 (PwnKit)
- **Technique:** Privilege escalation via environment variable manipulation
- **Impact:** Root shell from unprivileged user
- **Tools used:** Nmap, Gobuster, LinPEAS, GCC, Burp Suite, GDB

## 🧠 Notes

This report is part of my bug bounty and pentesting archive.  
Crafted by `BugVex` – follow for more reports.

File Snapshot


 [4.0K]  /data/pocs/f8e7aba06587aad82f3ebf3a15480a3376c4e63d
├── [2.0K]  BugVex.md
├── [2.8K]  index.md
└── [ 611]  README.md

0 directories, 3 files

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