Main Vulnerability Database Vulnerabilities #VU78871

Input validation error in Gitlab Community Edition and GitLab Enterprise Edition - CVE-2023-3900

Published: August 2, 2023

Vulnerability identifier: #VU78871

CSH Severity: Low

CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-3900

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to invalid "start_sha" value on merge requests page. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Affected software

Gitlab Community Edition
GitLab Enterprise Edition

How to mitigate CVE-2023-3900

Install updates from vendor's website.

Gitlab Community Edition - addressed in versions 16.0.8, 16.1.3, 16.2.2
GitLab Enterprise Edition - addressed in versions 16.0.8, 16.1.3, 16.2.2

External References

https://about.gitlab.com/releases/2023/08/01/security-release-gitlab-16-2-2-released/

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