CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/ch4rum/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。

Readme

# CVE-2021-4034
Un día para el exploit de escalada de privilegios de polkit

Simplemente ejecute y disfrute  `./blasty` de tu shell raíz.

El aviso original de los autores reales es -> [aquí](https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt)

## Instalación
Si el exploit funciona, obtendrá un shell de root inmediatamente:

```bash
(user@tecnokarita)-[~/Descargas] $> git clone https://github.com/T3cnokarita/CVE-2021-4034.git

(user@tecnokarita)-[~/Descargas/CVE-2021-4034] $> gcc -o blasty blasty-vs-pkexec.c

(user@tecnokarita)-[~/Descargas/CVE-2021-4034] $> ./blasty

# whoami
root

# exit
```

File Snapshot


 [4.0K]  /data/pocs/de454dec5b236dd44de0105058fd0e749f2c9992
├── [ 16K]  blasty
├── [2.1K]  blasty-vs-pkexec.c
└── [ 614]  README.md

0 directories, 3 files

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