Heap-based Buffer Overflow Affecting git-svn package, versions <0:2.39.1-1.el8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
2.46% (90th percentile)

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  • Snyk IDSNYK-ORACLE8-GITSVN-5599138
  • published16 May 2023
  • disclosed19 Oct 2022

Introduced: 19 Oct 2022

CVE-2022-39260  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:8 git-svn to version 0:2.39.1-1.el8 or higher.
This issue was patched in ELSA-2023-2859.

NVD Description

Note: Versions mentioned in the description apply only to the upstream git-svn package and not the git-svn package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

Git is an open source, scalable, distributed revision control system. git shell is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. In versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments into an array improperly uses an int to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the resulting array is then passed to execv(), it is possible to leverage this attack to gain remote code execution on a victim machine. Note that a victim must first allow access to git shell as a login shell in order to be vulnerable to this attack. This problem is patched in versions 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 and users are advised to upgrade to the latest version. Disabling git shell access via remote logins is a viable short-term workaround.

CVSS Scores

version 3.1