CVE-2024-32002
Published: 14 May 2024
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.
Notes
| Author | Note |
|---|---|
| leosilva | One can avoid it if symbolic link support is disable "config --global core.symlinks false" This issue exploits case insensitivity. As in Linux Ext4 has an option to turn on case insensitivity Linux could be a target. This issue was not reproducible, but fixed in all releases but Focal, Bionic and xenial, where source is not backportable in a first glance. Pending further investigation. |
Priority
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.0 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H |
References
- https://www.cve.org/CVERecord?id=CVE-2024-32002
- https://github.com/git/git/security/advisories/GHSA-8h77-4q3w-gfgv
- https://github.com/git/git/commit/97065761333fd62db1912d81b489db938d8c991d
- https://git-scm.com/docs/git-clone#Documentation/git-clone.txt---recurse-submodulesltpathspecgt
- https://git-scm.com/docs/git-config#Documentation/git-config.txt-coresymlinks
- https://ubuntu.com/security/notices/USN-6793-1
- https://ubuntu.com/security/notices/USN-6793-2
- NVD
- Launchpad
- Debian