Path traversal in GitLab Community Edition and Enterprise Edition

1) Path traversal

EUVDB-ID: #VU34098

Risk: Medium

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2020-10977

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when moving an issue between projects. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 8.5.0 - 12.9.0

Gitlab Community Edition: 8.5 - 12.9.0

CPE2.3

• cpe:2.3:a:gitlab:gitlab-ee:8.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab-ee:8.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab-ee:8.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab:8.5:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab:8.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab:8.5.1:*:*:*:*:*:*:*

External links

http://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-1-released/
http://about.gitlab.com/releases/categories/releases/

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, a fully functional exploit for this vulnerability is available.