#VU56265 Input validation error in Gitlab Community Edition and GitLab Enterprise Edition

Vulnerability identifier: #VU56265

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-20

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 attacker to compromise the target system.

The vulnerability exists due to invited group members continue to have project access even after invited group is deleted. A remote authenticated attacker can continue to have access to a project even after the invited group.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 14.0.0 - 14.2.1

GitLab Enterprise Edition: 14.0.0 - 14.2.1

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External links
https://about.gitlab.com/releases/2021/08/31/security-release-gitlab-14-2-2-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.