CVE-2019-13011 Explained : Impact and Mitigation

A vulnerability was found in versions 8.11.0 through 12.0.2 of GitLab Enterprise Edition where a user could generate merge request template names through a brute-force method.

Understanding CVE-2019-13011

This CVE involves a security issue in GitLab Enterprise Edition versions 8.11.0 through 12.0.2, allowing a user with project access to create a list of merge request template names.

What is CVE-2019-13011?

The vulnerability in GitLab Enterprise Edition versions 8.11.0 through 12.0.2 enables a user with project access but not repository access to exploit a brute-force method to generate merge request template names, leading to excessive algorithmic complexity.

The Impact of CVE-2019-13011

The vulnerability could potentially allow unauthorized users to access sensitive information and disrupt the integrity of the GitLab repository.

Technical Details of CVE-2019-13011

Vulnerability Description

The issue in GitLab Enterprise Edition versions 8.11.0 through 12.0.2 allows users with project access to create a collection of merge request template names through brute-force, posing a security risk.

Affected Systems and Versions

GitLab Enterprise Edition versions 8.11.0 through 12.0.2

Exploitation Mechanism

Unauthorized users with project access can exploit the vulnerability by employing a brute-force method to generate merge request template names.

Mitigation and Prevention

Immediate Steps to Take

Upgrade GitLab Enterprise Edition to a non-vulnerable version.
Monitor and restrict access permissions to prevent unauthorized users from exploiting the vulnerability.

Long-Term Security Practices

Implement strong authentication mechanisms to control access to GitLab repositories.
Regularly review and update security configurations to address potential vulnerabilities.

Patching and Updates

Apply security patches and updates provided by GitLab to fix the vulnerability and enhance system security.