Vulnerability identifier: #VU57937

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39909

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GitLab Enterprise Edition
Universal components / Libraries / Software for developers

Vendor: GitLab, Inc

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 11.3.0 - 14.4.0

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External links
http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-released/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.