Vulnerability identifier: #VU49354

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22167

CWE-ID: CWE-200

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 gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. Incorrect headers within a specific project page allows attacker to have temporary read access to a public repository with project features restricted to only members.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.1.0 - 13.7.1

GitLab Enterprise Edition: 12.1.1 - 13.7.1

---

External links
http://about.gitlab.com/releases/2021/01/07/security-release-gitlab-13-7-2-released/

---

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.