#VU57938 Improper access control


Published: 2021-11-04

Vulnerability identifier: #VU57938

Vulnerability risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39903

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

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

Vendor: GitLab, Inc

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote authenticated attacker can change the visibility level of a group or a project to a restricted option even after the instance administrator sets that visibility option as restricted in settings.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.0.0 - 14.4.0

GitLab Enterprise Edition: 13.0.0 - 14.4.0


CPE

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


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.


Latest bulletins with this vulnerability