CVE-2018-11235 PoC — Git 安全漏洞

Source

https://github.com/Rogdham/CVE-2018-11235

Associated Vulnerability

Title:Git 安全漏洞 (CVE-2018-11235)
Description:Git是美国软件开发者林纳斯-托瓦兹（Linus Torvalds）所研发的一套免费、开源的分布式版本控制系统。 Git中存在安全漏洞，该漏洞源于在将子模块名称添加到$GIT_DIR/modules目录下时，程序没有正确的验证来自不可信.gitmodules文件的子模块名称。远程攻击者可借助特制的.gitmodules文件利用该漏洞执行任意代码。以下版本受到影响：Git 2.13.7之前版本，2.14.4之前的2.14.x版本，2.15.2之前的2.15.x版本，2.16.4之前的2.16.x版本，2.1

Description

PoC exploit for CVE-2018-11235 allowing RCE on git clone --recurse-submodules

Readme

PoC exploit for CVE-2018-11235
==============================

GitHub is not allowing me to push a repository exploiting the vulnerability
(good point for them), so you will have to build it yourself by running the
[build.sh](build.sh) script.

Then, push the repository somewhere. When you clone it with the
`--recurse-submodules` flag, the [evil script](evil.sh) is executed:

```
$ git clone --recurse-submodules repo dest_dir
Cloning into 'dest_dir'...
done.
Submodule 'Spoon-Knife' (https://github.com/octocat/Spoon-Knife) registered for path 'Spoon-Knife'
Submodule '../../modules/evil' (https://github.com/octocat/Spoon-Knife) registered for path 'evil'
Cloning into '/snip/dest_dir/Spoon-Knife'...
Submodule path 'Spoon-Knife': checked out 'd0dd1f61b33d64e29d8bc1372a94ef6a2fee76a9'

Here is your hostname: snip

Submodule path 'evil': checked out 'd0dd1f61b33d64e29d8bc1372a94ef6a2fee76a9'
```


Acknowledgements
----------------

Code derived from [@peff](https://github.com/peff)'s [git patch][] (look for
the `t/t7415-submodule-names.sh` test file).

As such, this repository is published under the GNU General Public License
version 2.

Additional fix for older versions of git courtesy of
[@atorralba](https://github.com/atorralba)
([details in this post](https://atorralba.github.io/CVE-2018-11235/)).

[git patch]: https://github.com/git/git/commit/0383bbb9015898cbc79abd7b64316484d7713b44

File Snapshot


 [4.0K]  /data/pocs/c2ea26cb60708bbe6eae83231b70912a083fc9a2
├── [ 652]  build.sh
├── [  62]  evil.sh
└── [1.4K]  README.md

0 directories, 3 files

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