CVE-2024-32002 PoC — Git's recursive clones on case-insensitive filesystems that support symlinks are susceptible to Remote Code Execution

Source

https://github.com/JakobTheDev/cve-2024-32002-submodule-rce

Associated Vulnerability

Title:Git's recursive clones on case-insensitive filesystems that support symlinks are susceptible to Remote Code Execution (CVE-2024-32002)
Description:Git is a revision control system. Prior to versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4, repositories with submodules can be crafted in a way that exploits a bug in Git whereby it can be fooled into writing files not into the submodule's worktree but into a `.git/` directory. This allows writing a hook that will be executed while the clone operation is still running, giving the user no opportunity to inspect the code that is being executed. The problem has been patched in versions 2.45.1, 2.44.1, 2.43.4, 2.42.2, 2.41.1, 2.40.2, and 2.39.4. If symbolic link support is disabled in Git (e.g. via `git config --global core.symlinks false`), the described attack won't work. As always, it is best to avoid cloning repositories from untrusted sources.

Readme

# CVE-2024-32002 RCE Submodule

A submodule to demonstrate CVE-2024-32002. Demonstrates Remote Code Execution (RCE) by loading a malicious commit hook into the `.git` directory of the parent repo.

See [cve-2024-32002-poc-rce](https://github.com/JakobTheDev/cve-2024-32002-poc-rce) for the working POC that utilises this repo.

## What this repo contains
- A malicous git hook called `post-checkout` which runs immediately after the clone completes. This git hook simply pops calc in Windows or MacOS.
- The git hook is located under notexists/hooks for good reason:
	- notexists is needed to make sure the repo clones into an empty directory.
	- hooks is the directory that git looks for git hooks to execute.

File Snapshot

Remarks

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