Improper access control in GitLab Enterprise Edition - CVE-2023-6840
Published: February 8, 2024
Vulnerability identifier: #VU86250
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-6840
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions within block_branch_modification setting. A remote administrator can change the name of a protected branch that bypasses the security policy added to block MR.
Affected software
GitLab Enterprise Edition
How to mitigate CVE-2023-6840
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 16.6.7, 16.7.5, 16.8.2