CVE-2019-12428 : Security Advisory and Response

A vulnerability has been found in GitLab Community and Enterprise Edition versions 6.8 through 11.11 that allows users to bypass mandatory sign-in restrictions imposed by external authentication providers.

Understanding CVE-2019-12428

This CVE identifies a security flaw in GitLab versions 6.8 through 11.11 that enables users to evade compulsory sign-in restrictions set by external authentication providers through carefully manipulated requests.

What is CVE-2019-12428?

This vulnerability in GitLab allows users to bypass mandatory sign-in restrictions by sending specifically crafted requests, leading to Improper Authorization.

The Impact of CVE-2019-12428

Users can circumvent mandatory sign-in restrictions set by external authentication providers.

Technical Details of CVE-2019-12428

This section provides technical insights into the vulnerability.

Vulnerability Description

An issue in GitLab Community and Enterprise Edition versions 6.8 through 11.11 allows users to bypass external authentication provider sign-in restrictions by manipulating requests.

Affected Systems and Versions

GitLab Community and Enterprise Edition versions 6.8 through 11.11.

Exploitation Mechanism

Users exploit the vulnerability by sending carefully crafted requests to evade mandatory sign-in restrictions.

Mitigation and Prevention

Protect your systems from CVE-2019-12428 with these steps:

Immediate Steps to Take

Update GitLab to a patched version that addresses the vulnerability.
Monitor user sign-in activities for any suspicious behavior.

Long-Term Security Practices

Implement multi-factor authentication to enhance security.
Regularly review and update access control policies.

Patching and Updates

Apply security patches provided by GitLab to fix the vulnerability.