CVE-2023-25136 PoC — OpenSSH 资源管理错误漏洞

Source

https://github.com/jfrog/jfrog-CVE-2023-25136-OpenSSH_Double-Free

Associated Vulnerability

Title:OpenSSH 资源管理错误漏洞 (CVE-2023-25136)
Description:OpenSSH（OpenBSD Secure Shell）是加拿大OpenBSD计划组的一套用于安全访问远程计算机的连接工具。该工具是SSH协议的开源实现，支持对所有的传输进行加密，可有效阻止窃听、连接劫持以及其他网络级的攻击。 OpenSSH 存在资源管理错误漏洞，该漏洞源于options.kex_algorithms 处理期间引入了双重释放漏洞。

Readme

# CVE-2023-25136 Proof-of-Concept

### Overview

This is a DoS Proof-of-Concept of OpenSSH 9.1p1 Double-Free Vulnerability CVE-2023-25136.  
It will trigger the double-free and cause an abort crash.  
For a comprehensive understanding, check out the accompanying [blog post](https://jfrog.com/blog/openssh-pre-auth-double-free-cve-2023-25136-writeup-and-proof-of-concept/) for in-depth details.

### Dependencies

* Python 3.6+
* `paramiko` Python Library

### Usage

1. Verify `paramiko` is installed:
```
pip install paramiko
```

2. Change the `VICTIM_IP` to match your vulnerable OpenSSH Server IP.  

3. Run the PoC:
```
python cve-2023-25136.py
```

File Snapshot


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├── [ 283]  cve-2023-25136.py
├── [ 11K]  LICENSE
└── [ 681]  README.md

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