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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
Polkit提权包 CVE-2021-4034 (供需要的人方便使用
Readme
# Polkit-Permission-promotion-compiled
Polkit提权包 CVE-2021-4034 (Easy access for those who need it)

源项目(需编译):https://github.com/berdav/CVE-2021-4034

此为已编译后项目,全部导入

```python
chmod -R 777 2>/dev/null
```

```python
./exp
```

eg. dir tree:
```
CVE-2021-4034
├─ GCONV_PATH=.%
│    └─ pwnkit.so:.
├─ exp
├─ gconv-modules
├─ pwnkit.c
└─ pwnkit.so
```

Environment:
> ubuntu-16.04.7
> glibc 2.23
File Snapshot

[4.0K] /data/pocs/824c060955c09ef27f0ea42672769e2bd482b14b ├── [4.0K] CVE-2021-4034 │   ├── [8.5K] exp │   ├── [ 33] gconv-modules │   ├── [4.0K] GCONV_PATH=.% │   │   └── [ 27K] pwnkit.so^%.% │   ├── [ 339] pwnkit.c │   └── [8.1K] pwnkit.so └── [ 474] README.md 2 directories, 6 files
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