#VU83608 Improper access control in GitLab Enterprise Edition - CVE-2023-6396

Vulnerability identifier: #VU83608

Vulnerability risk: Medium

CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-6396

CWE-ID: CWE-284

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 gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote user with admin_group_member custom permission can add members with higher role.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 16.5.0 - 16.6.0

---

External links
https://about.gitlab.com/releases/2023/11/30/security-release-gitlab-16-6-1-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.