Vulnerability identifier: #VU47329

Vulnerability risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13334

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 bypass authorization checks.

The vulnerability exists due to improper authorization. A remote user can change the confidentiality attribute of issue via mutation GraphQL query.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.6 - 13.4.1

GitLab Enterprise Edition: 8.6.0 - 13.4.0

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External links
http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/

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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.