Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2023-3900
CVE-2023-3900:
GitLab vulnerability analysis and mitigation
Overview
An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, and all versions starting from 16.2 before 16.2.2. The vulnerability involves an invalid 'start_sha' value on merge requests page that can lead to a Denial of Service condition where the Changes tab would not load (NVD, CVE).
Technical details
The vulnerability is related to improper validation of specified type of input (CWE-1287) in GitLab's merge request functionality. The CVSS v3.1 base scores vary between sources, with NVD rating it as 7.5 HIGH (Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) while GitLab Inc. rates it as 4.3 MEDIUM (Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L) (NVD).
Impact
When exploited, this vulnerability prevents users from loading files on the Changes tab in merge requests. Additionally, affected threads cannot be deleted, even by administrators, effectively creating a persistent denial of service condition (GitLab Issue).
Mitigation and workarounds
Users should upgrade to GitLab version 16.1.3 or later for the 16.1.x series, or version 16.2.2 or later for the 16.2.x series (NVD).
Additional resources
Source: This report was generated using AI
Related GitLab vulnerabilities:
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management