CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

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

CVE-2021-4034

Readme

# CVE-2021-4043

A memory corruption vulnerability was discovered in pkexec of polkit (previously PolicyKit).

[![asciicast](https://asciinema.org/a/2ofNaUmmZeO7HT6fNZXpV15FD.svg)](https://asciinema.org/a/2ofNaUmmZeO7HT6fNZXpV15FD)

## Reference

- https://beny23.github.io/posts/pwnkit_how_to_check_and_exploit/
- https://beaglesecurity.com/blog/vulnerability/pwnkit-linux-system-bug-allowing-distro-root-access.html
- https://thehackernews.com/2022/01/12-year-old-polkit-flaw-lets.html

File Snapshot


 [4.0K]  /data/pocs/801ca1f5e87b2c4c2898ec8cc06388a4a716218c
├── [ 987]  pwnkit.c
└── [ 488]  README.md

0 directories, 2 files

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