CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/cd80-ctf/CVE-2021-4034

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

A simple proof-of-concept for CVE-2021-4034 (pkexec local privilege escalation)

Readme

# CVE-2021-4034
A simple proof-of-concept for CVE-2021-4034 (pkexec local privilege escalation). Based on the excellent [summary](https://packetstormsecurity.com/files/165726/Polkit-pkexec-Local-Privilege-Escalation.html) by our friends at Qualsys.

# How do?
1. Clone this repository onto a machine with a vulnerable version of `pkexec`.
2. `./run.sh`
3. Shenanigans.

File Snapshot


 [4.0K]  /data/pocs/f00d6c83be4b15e9bea897d77d2c40938e93f29b
├── [ 221]  cd80.c
├── [ 369]  README.md
├── [ 470]  run.sh
└── [ 224]  shell.c

0 directories, 4 files

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