CVE-2023-6840

Public Exploit
Missing Authorization in GitLab

Description

An issue has been discovered in GitLab EE affecting all versions from 16.4 prior to 16.6.7, 16.7 prior to 16.7.5, and 16.8 prior to 16.8.2 which allows a maintainer to change the name of a protected branch that bypasses the security policy added to block MR.

Remediation

Solution:

  • Upgrade to versions 16.8.2, 16.7.5, 16.6.7 or above.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/435500 issue tracking permissions required
https://hackerone.com/reports/2280292 broken link exploit permissions required technical description

Frequently Asked Questions

What is the severity of CVE-2023-6840?
CVE-2023-6840 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6840?
To fix CVE-2023-6840: Upgrade to versions 16.8.2, 16.7.5, 16.6.7 or above.
Is CVE-2023-6840 being actively exploited in the wild?
It is possible that CVE-2023-6840 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-2023-6840?
CVE-2023-6840 affects GitLab GitLab.
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