Check Point Advisories

GitLab Authentication Bypass (CVE-2021-4191)

Vulnerability
Protection

Check Point Reference:	CPAI-2021-2073
Date Published:	21 Dec 2023
Severity:	Medium
Last Updated:	Thursday 21 December, 2023
Source:
Industry Reference:	CVE-2021-4191
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	GitLab 13.0.0 and later, prior to 14.6.5 GitLab 14.7.0 and later, prior to 14.7.4 GitLab 14.8 and later, prior to 14.8.2
Vulnerability Description	An authentication bypass vulnerability exists in GitLab. Successful exploitation of this vulnerability would allow remote attackers to gain unauthorized access into the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the GitLab Authentication Bypass (CVE-2021-4191) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: GitLab Authentication Bypass (CVE-2021-4191)