Security features bypass in GitLab Enterprise Edition - CVE-2021-39909
Published: November 4, 2021
Vulnerability identifier: #VU57937
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39909
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to lack of email address ownership verification in the CODEOWNERS feature. A remote authenticated attacker can bypass CODEOWNERS Merge Request approval requirement under rare circumstances.
Affected software
GitLab Enterprise Edition
How to mitigate CVE-2021-39909
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 14.2.6, 14.3.4, 14.4.1