Vulnerability Description
Cygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file name may cause just-checked out code to be executed while checking out a repository using Git on Cygwin. The problem will be patched in the Cygwin Git v2.31.1-2 release. At time of writing, the vulnerability is present in the upstream Git source code; any Cygwin user who compiles Git for themselves from upstream sources should manually apply a patch to mitigate the vulnerability. As mitigation users should not clone or pull from repositories from untrusted sources. CVE-2019-1354 was an equivalent vulnerability in Git for Visual Studio.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cygwin | Git | <= 2.31.1-1 |
Related Weaknesses (CWE)
References
- https://cygwin.com/pipermail/cygwin-announce/2021-April/010018.htmlMailing ListPatchVendor Advisory
- https://github.com/me-and/Cygwin-Git/blob/main/check-backslash-safety.patchPatchThird Party Advisory
- https://github.com/me-and/Cygwin-Git/security/advisories/GHSA-rmp3-wq55-f557PatchThird Party Advisory
- https://lore.kernel.org/git/CA+kUOa=juEdBMVr_gyTKjz7PkPt2DZHkXQyzcQmAWCsEHC_ssw%
- https://cygwin.com/pipermail/cygwin-announce/2021-April/010018.htmlMailing ListPatchVendor Advisory
- https://github.com/me-and/Cygwin-Git/blob/main/check-backslash-safety.patchPatchThird Party Advisory
- https://github.com/me-and/Cygwin-Git/security/advisories/GHSA-rmp3-wq55-f557PatchThird Party Advisory
- https://lore.kernel.org/git/CA+kUOa=juEdBMVr_gyTKjz7PkPt2DZHkXQyzcQmAWCsEHC_ssw%
FAQ
What is CVE-2021-29468?
CVE-2021-29468 is a vulnerability with a CVSS score of 8.8 (HIGH). Cygwin Git is a patch set for the git command line tool for the cygwin environment. A specially crafted repository that contains symbolic links as well as files with backslash characters in the file n...
How severe is CVE-2021-29468?
CVE-2021-29468 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-29468?
Check the references section above for vendor advisories and patch information. Affected products include: Cygwin Git.