CVE-2019-6789 : Exploit Details and Defense Strategies

A vulnerability has been identified in versions 11.5.8, 11.6.x (prior to 11.6.6), and 11.7.x (prior to 11.7.1) of GitLab Community and Enterprise Edition. This vulnerability allows for the disclosure of information, particularly exposing project namespace to unauthorized users.

Understanding CVE-2019-6789

This CVE affects GitLab versions 11.5.8, 11.6.x (before 11.6.6), and 11.7.x (before 11.7.1) in both Community and Enterprise Editions.

What is CVE-2019-6789?

An issue in GitLab versions before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1 that allows unauthorized users to gain knowledge of the new project namespace, particularly for private projects.

The Impact of CVE-2019-6789

Unauthorized users may receive emails revealing project namespace after a project relocation.
This could lead to the exposure of sensitive information in private projects.

Technical Details of CVE-2019-6789

This section provides more technical insights into the vulnerability.

Vulnerability Description

Issue 4 out of 6 vulnerabilities identified in GitLab Community and Enterprise Edition.
Enables the disclosure of information, specifically exposing project namespace.

Affected Systems and Versions

GitLab versions 11.5.8, 11.6.x (before 11.6.6), and 11.7.x (before 11.7.1) are affected.

Exploitation Mechanism

Unauthorized users without project permissions may receive emails post project relocation.
Private project namespace can be exposed to unauthorized users.

Mitigation and Prevention

Protect your systems from CVE-2019-6789 with these steps:

Immediate Steps to Take

Update GitLab to versions 11.5.8, 11.6.6, or 11.7.1 to mitigate the vulnerability.
Review project permissions to limit unauthorized access.

Long-Term Security Practices

Regularly monitor and audit email notifications for unusual activities.
Educate users on project relocation procedures to prevent inadvertent information disclosure.

Patching and Updates

Apply security patches provided by GitLab promptly to address vulnerabilities and enhance system security.