CVE-2023-3900

Public Exploit
Improper Validation of Specified Type of Input in GitLab

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.1 before 16.1.3, all versions starting from 16.2 before 16.2.2. An invalid 'start_sha' value on merge requests page may lead to Denial of Service as Changes tab would not load.

Remediation

Solution:

  • Upgrade to version 16.2.2, 16.1.3 or above

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.16%
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/418770 issue tracking broken link
https://hackerone.com/reports/2058514 broken link exploit permissions required technical description

Frequently Asked Questions

What is the severity of CVE-2023-3900?
CVE-2023-3900 has been scored as a medium severity vulnerability.
How to fix CVE-2023-3900?
To fix CVE-2023-3900: Upgrade to version 16.2.2, 16.1.3 or above
Is CVE-2023-3900 being actively exploited in the wild?
It is possible that CVE-2023-3900 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3900?
CVE-2023-3900 affects GitLab GitLab.
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