Vulnerability identifier: #VU29554

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-15525

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 Maven package upload endpoint could be used to override restrictions and result in the GitLab Workhorse disclosing the existence and contents of files in the /tmp directory. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.3 - 13.1.2

GitLab Enterprise Edition: 11.3.0 - 13.1.2

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External links
http://about.gitlab.com/releases/2020/07/06/critical-security-release-gitlab-13-1-3-released/

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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. However, proof of concept for this vulnerability is available.