Incorrect Regular Expression in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2023-2198

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Main Vulnerability Database Vulnerabilities #VU76980

Incorrect Regular Expression in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2023-2198

Published: June 6, 2023


Vulnerability identifier: #VU76980
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-2198
CWE-ID: CWE-185
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing regular expressions within the InlineDiffFilter in any Markdown fields. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.


Affected software

Gitlab Community Edition
GitLab Enterprise Edition

How to mitigate CVE-2023-2198

Install updates from vendor's website.

Gitlab Community Edition - addressed in versions 15.10.8, 15.11.7, 16.0.2
GitLab Enterprise Edition - addressed in versions 15.10.8, 15.11.7, 16.0.2

External References

Related Security Bulletins