Integer Overflow or Wraparound Affecting gitk package, versions <0:1.8.3.1-24.el7_9


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
2.53% (90th percentile)

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  • Snyk IDSNYK-CENTOS7-GITK-3239114
  • published19 Jan 2023
  • disclosed17 Jan 2023

Introduced: 17 Jan 2023

CVE-2022-23521  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Centos:7 gitk to version 0:1.8.3.1-24.el7_9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gitk package and not the gitk package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1