CVE-2021-29468

Arbitrary code execution when checking out an attacker-controlled Git branch

State
Published
Severity
8.8 High
Published
Apr 29, 2021
Updated
Aug 3, 2024
Reserved
Mar 30, 2021

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HGitHub_M

Weaknesses

  • CWE-20 Improper Input Validation

Affected Products

ProductVersions
Cygwin-Gitme-and
  • < 2.31.1-2Affected

References

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