Vulnerability identifier: #VU51272

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-22

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 user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in GitLab Workhors. A remote user can send a specially crafted HTTP request and obtain JWT tokens of other users.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 13.9.1

GitLab Enterprise Edition: 6.2.0 - 13.9.1

---

External links
http://about.gitlab.com/releases/2021/03/04/security-release-gitlab-13-9-2-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.