Vulnerability identifier: #VU23351

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-18459

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 an attacker to bypass authorization checks.

The vulnerability exists due to improper authorization checks in the protected environments feature. A remote attacker can gain access to protected environments even after removal.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.3.0 - 12.3.0

GitLab Enterprise Edition: 11.3.0 - 12.3.0

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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 non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.