CVE-2016-6515 PoC — OpenSSH输入验证错误漏洞

Source

Associated Vulnerability

Title:OpenSSH输入验证错误漏洞 (CVE-2016-6515)
Description:OpenSSH（OpenBSD Secure Shell）是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 7.3之前的版本中的sshd中的auth-passwd.c文件中的‘auth_password’函数存在输入验证错误漏洞，该漏洞源于程序没有在密码验证中限制密码长度。远程攻击者可借助长的字符串利用该漏洞造成拒绝服务(CPU消耗)。

Description

A proof of concept for CVE-2016-6515

Readme

### Since OpenSSH servers don't restrict the login password length, you can cause these servers to crash by sending very long passwords which use massive amounts of a the server's CPU to hash. This vulnerability is known as [CVE-2016-6515](https://nvd.nist.gov/vuln/detail/CVE-2016-6515).
## My POC can be downloaded [here](https://github.com/jptr218/openssh_dos/raw/main/openssh_dos.zip) (you will need to unzip)
### Usage:

### `openssh_dos [target IP] [target port] `

File Snapshot


 [4.0K]  /data/pocs/c4b66d58341a8a34afae02cfd44afd6ff5cd8627
├── [453K]  openssh_dos.zip
├── [ 471]  README.md
└── [4.0K]  src
    ├── [ 207]  hdr.h
    ├── [ 771]  main.cpp
    └── [ 562]  misc.cpp

1 directory, 5 files

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