Vulnerability identifier: #VU85321

Vulnerability risk: Medium

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5356

CWE-ID: CWE-285

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 incorrect authorization checks. A remote user can abuse Slack/Mattermost integrations to execute slash commands as another user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.13 - 16.7.1

GitLab Enterprise Edition: 8.13.0 - 16.7.1

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External links
http://about.gitlab.com/releases/2024/01/11/critical-security-release-gitlab-16-7-2-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.