CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/EstamelGG/CVE-2021-4034-NoGCC

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简单优化，以应对没有安装gcc和make的目标环境

Readme

# CVE-2021-4032-NoGCC

Test in:

Ubuntu 20.04.3 LTS

Kali 2021.4a

CentOS Linux release 7.5.1804




Use:

# 1:interactive shell

./cve-2021-4034-poc-x64

# 2:one-liner

./cve-2021-4034-poc-x64 "cat /etc/shadow"

File Snapshot


 [4.0K]  /data/pocs/1448b8d3fc8a6b022d87f34bc302a507138431c2
├── [ 212]  README.md
├── [4.0K]  v2.0
│   ├── [4.0K]  release
│   │   ├── [4.0K]  x64
│   │   │   └── [ 33K]  cve-2021-4034-poc-64
│   │   └── [4.0K]  x86
│   │       └── [ 31K]  cve-2021-4034-poc-86
│   └── [4.0K]  source
│       ├── [100K]  cve-2021-4034-poc-x64.c
│       └── [ 92K]  cve-2021-4034-poc-x86.c
├── [4.0K]  v3.0
│   ├── [4.0K]  release
│   │   ├── [4.0K]  x64
│   │   │   └── [ 33K]  cve-2021-4034-poc-64
│   │   └── [4.0K]  x86
│   │       └── [ 31K]  cve-2021-4034-poc-86
│   └── [4.0K]  source
│       ├── [100K]  cve-2021-4034-poc-x64-v3.0.c
│       ├── [ 93K]  cve-2021-4034-poc-x86-v3.0.c
│       └── [ 376]  pwnkit-v3.0.c
└── [4.0K]  v4.0
    ├── [4.0K]  release
    │   ├── [4.0K]  x64
    │   │   └── [ 32K]  cve-2021-4034-poc
    │   └── [4.0K]  x86
    │       └── [ 31K]  cve-2021-4034-poc
    └── [4.0K]  source
        ├── [100K]  cve-2021-4034-poc-x64-v4.0.c
        ├── [ 93K]  cve-2021-4034-poc-x86-v4.0.c
        └── [ 376]  pwnkit-v4.0.c

15 directories, 15 files

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