CVE-2023-6688

Public Exploit
Inefficient Regular Expression Complexity in GitLab

Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.11 prior to 16.11.2. A problem with the processing logic for Google Chat Messages integration may lead to a regular expression DoS attack on the server.

Remediation

Solution:

  • Upgrade to versions 16.11.2 or above.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.31%
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/434854 issue tracking broken link permissions required
https://hackerone.com/reports/2270362 exploit permissions required technical description

Frequently Asked Questions

What is the severity of CVE-2023-6688?
CVE-2023-6688 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6688?
To fix CVE-2023-6688: Upgrade to versions 16.11.2 or above.
Is CVE-2023-6688 being actively exploited in the wild?
It is possible that CVE-2023-6688 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-2023-6688?
CVE-2023-6688 affects GitLab GitLab.
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