CVE-2023-6159

Public Exploit
Inefficient Regular Expression Complexity in GitLab

Description

An issue has been discovered in GitLab CE/EE affecting all versions from 12.7 prior to 16.6.6, 16.7 prior to 16.7.4, and 16.8 prior to 16.8.1 It was possible for an attacker to trigger a Regular Expression Denial of Service via a `Cargo.toml` containing maliciously crafted input.

Remediation

Solution:

  • Upgrade to versions 16.8.1, 16.7.4, 16.6.6 or above.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.47%
Vendor Advisory gitlab.com
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://about.gitlab.com/releases/2024/01/25/critical-security-release-gitlab-16-8-1-released/ vendor advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/431924 issue tracking broken link
https://hackerone.com/reports/2251278 permissions required exploit technical description broken link

Frequently Asked Questions

What is the severity of CVE-2023-6159?
CVE-2023-6159 has been scored as a medium severity vulnerability.
How to fix CVE-2023-6159?
To fix CVE-2023-6159: Upgrade to versions 16.8.1, 16.7.4, 16.6.6 or above.
Is CVE-2023-6159 being actively exploited in the wild?
It is possible that CVE-2023-6159 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-2023-6159?
CVE-2023-6159 affects GitLab GitLab.
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