CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/ck00004/CVE-2021-4034

Associated Vulnerability

Title: polkit 缓冲区错误漏洞 (CVE-2021-4034)
Description:A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.

Description

CVE-2021-4034 centos8可用版本

Readme

# CVE-2021-4034
CVE-2021-4034 centos8可用版本

基于修改而来
https://github.com/berdav/CVE-2021-4034/tree/main/dry-run

## 使用方法
修改``pwnkit-dry-run.c``中``system``函数执行自定义执行命令
（默认为添加``r00t``用户，密码为``XHSZWCPU6Nvobe``）
``make``进行编译
上传到目标机器运行

File Snapshot

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