Incorrect Regular Expression in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2023-6386
Published: February 8, 2024
Vulnerability identifier: #VU86251
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-6386
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 in CI/CD Pipeline Editor while verifying Pipeline syntax. A remote user can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.
Affected software
GitLab Enterprise Edition
Gitlab Community Edition
Gitlab Community Edition
How to mitigate CVE-2023-6386
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 16.6.7, 16.7.5, 16.8.2
Gitlab Community Edition - addressed in versions 16.6.7, 16.7.5, 16.8.2
Gitlab Community Edition - addressed in versions 16.6.7, 16.7.5, 16.8.2