CVE-2023-6736

Public Exploit
Inefficient Regular Expression Complexity in GitLab

Description

An issue has been discovered in GitLab EE affecting all versions starting from 11.3 before 16.7.6, all versions starting from 16.8 before 16.8.3, all versions starting from 16.9 before 16.9.1. It was possible for an attacker to cause a client-side denial of service using malicious crafted content in the CODEOWNERS file.

Remediation

Solution:

  • Upgrade to versions 16.9.1, 16.8.3, 16.7.6 or above.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.20%
Vendor Advisory gitlab.com
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/435036 vendor advisory issue tracking
https://hackerone.com/reports/2269023 broken link exploit permissions required technical description

Frequently Asked Questions

What is the severity of CVE-2023-6736?
CVE-2023-6736 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6736?
To fix CVE-2023-6736: Upgrade to versions 16.9.1, 16.8.3, 16.7.6 or above.
Is CVE-2023-6736 being actively exploited in the wild?
It is possible that CVE-2023-6736 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-2023-6736?
CVE-2023-6736 affects GitLab GitLab.
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