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CVE-2021-29468

8.8 · HIGH

Cygwin Git is a patch set for the git command line tool for the cygwin environment.

Published Apr 29, 2021CWE-20EPSS 1.24%

Overview

CVE-2021-29468 is a high-severity vulnerability. It was published on April 29, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcygwin.com/pipermail/cygwin-announce/2021-April/010018.htmlGitHubgithub.com/me-and/Cygwin-Git/blob/main/check-backslash-safety.patchGitHubgithub.com/me-and/Cygwin-Git/security/advisories/GHSA-rmp3-wq55-f557Reflore.kernel.org/git/CA+kUOa=juEdBMVr_gyTKjz7PkPt2DZHkXQyzcQmAWCsEHC_ssw%40mail.gmail.com/T/#uRefcygwin.com/pipermail/cygwin-announce/2021-April/010018.htmlGitHubgithub.com/me-and/Cygwin-Git/blob/main/check-backslash-safety.patchGitHubgithub.com/me-and/Cygwin-Git/security/advisories/GHSA-rmp3-wq55-f557Reflore.kernel.org/git/CA+kUOa=juEdBMVr_gyTKjz7PkPt2DZHkXQyzcQmAWCsEHC_ssw%40mail.gmail.com/T/#u

How CyberStrike helps

Frequently asked questions

What is CVE-2021-29468?

CVE-2021-29468 is a high-severity vulnerability. It was published on April 29, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-29468?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-29468?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-29468?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-29468 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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