Vulnerability 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, local clones may end up hardlinking files into the target repository's object database when source and target repository reside on the same disk. If the source repository is owned by a different user, then those hardlinked files may be rewritten at any point in time by the untrusted user. Cloning local repositories will cause Git to either copy or hardlink files of the source repository into the target repository. This significantly speeds up such local clones compared to doing a "proper" clone and saves both disk space and compute time. When cloning a repository located on the same disk that is owned by a different user than the current user we also end up creating such hardlinks. These files will continue to be owned and controlled by the potentially-untrusted user and can be rewritten by them at will in the future. 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Git-Scm | Git | < 2.39.4 |
| Fedoraproject | Fedora | 40 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2024/05/14/2Mailing ListThird Party Advisory
- https://github.com/git/git/commit/1204e1a824c34071019fe106348eaa6d88f9528dPatch
- https://github.com/git/git/commit/9e65df5eab274bf74c7b570107aacd1303a1e703Patch
- https://github.com/git/git/security/advisories/GHSA-5rfh-556j-fhgjExploitVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2024/05/14/2Mailing ListThird Party Advisory
- https://github.com/git/git/commit/1204e1a824c34071019fe106348eaa6d88f9528dPatch
- https://github.com/git/git/commit/9e65df5eab274bf74c7b570107aacd1303a1e703Patch
- https://github.com/git/git/security/advisories/GHSA-5rfh-556j-fhgjExploitVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
FAQ
What is CVE-2024-32020?
CVE-2024-32020 is a vulnerability with a CVSS score of 3.9 (LOW). 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, local clones may end up hardlinking files into the target repository's object database w...
How severe is CVE-2024-32020?
CVE-2024-32020 has been rated LOW with a CVSS base score of 3.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-32020?
Check the references section above for vendor advisories and patch information. Affected products include: Git-Scm Git, Fedoraproject Fedora.