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 PoC

Readme

# CVE-2021-4034
## Introduction

This is an exploit for the `CVE-2021-4034` vulnerability, aka [pwnkit](https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt), which was discovered by Qualys.

## Usage
### Compilation
```
$ make
```
or
```
$ gcc -o pwnkit.so -fPIC -shared pwnkit.c -Wl,-e,main
```

### Testing
```
$ make test
```
or
```
$ ./pwnkit.so
```

File Snapshot


 [4.0K]  /data/pocs/b8cfd13cecddf80312e25573f9ad0e176abb5a0a
├── [ 128]  Makefile
├── [2.1K]  pwnkit.c
└── [ 361]  README.md

0 directories, 3 files

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