CVE-2022-23521

gitattributes parsing integer overflow in git

Published Jan 17, 2023 CVSS 3.1 · 9.8 Critical EPSS 56.3% KEV · Not listed
Description
Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge number of attributes for a single pattern, or when the declared attribute names are huge. These overflows can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote code execution. The problem has been patched in the versions published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3282-1 git security update
Debian DSA Debian DSA DSA-5332-1 git security update
Ubuntu USN Ubuntu USN USN-5810-1 Git vulnerabilities
Ubuntu USN Ubuntu USN USN-5810-3 Git vulnerabilities
Ubuntu USN Ubuntu USN USN-5810-4 Git vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Feb 13, 2025, 4:32 PM
Reserved
Jan 19, 2022, 9:23 PM
Status
Modified
Published
Jan 17, 2023, 11:15 PM
Modified
Jun 17, 2026, 4:30 AM
Severity
Important
Public date
Jan 17, 2023, 12:00 AM