Vulnerability identifier: #VU23095

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-18446

CWE-ID: CWE-732

Exploitation vector: Network

Exploit availability: No

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

Vendor: GitLab, Inc

Description

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

The vulnerability exists due to insecure permissions. A remote authenticated attacker can delete the source branch of MR.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 8.15.0 - 12.4.0

Gitlab Community Edition: 8.15.0 - 12.4.0

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External links
http://about.gitlab.com/blog/2019/10/30/security-release-gitlab-12-dot-4-dot-1-released/
http://about.gitlab.com/blog/categories/releases/

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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.