CVE-2019-15578 : Security Advisory and Response

A vulnerability in GitLab versions prior to 12.3.2, 12.2.6, and 12.1.12 exposes private project paths through unsubscribe email links.

Understanding CVE-2019-15578

This CVE involves an information disclosure issue in GitLab Community Edition (CE) and Enterprise Edition (EE) versions before 12.3.2, 12.2.6, and 12.1.12.

What is CVE-2019-15578?

The vulnerability allows the exposure of private project paths that were previously public via unsubscribe email links in issues and merge requests.

The Impact of CVE-2019-15578

Attackers could gain access to sensitive project information, compromising the confidentiality of projects.

Technical Details of CVE-2019-15578

This section provides detailed technical information about the vulnerability.

Vulnerability Description

An information disclosure vulnerability exists in GitLab CE/EE versions before 12.3.2, 12.2.6, and 12.1.12, where private project paths are revealed in unsubscribe email links.

Affected Systems and Versions

Product: GitLab CE/EE
Vendor: GitLab
Vulnerable Versions: < 12.3.2, < 12.2.6, < 12.1.12

Exploitation Mechanism

Attackers can exploit the vulnerability by accessing unsubscribe email links in issues and merge requests to reveal private project paths.

Mitigation and Prevention

Protect your systems from CVE-2019-15578 with these mitigation strategies.

Immediate Steps to Take

Upgrade GitLab CE/EE to version 12.3.2 or higher to patch the vulnerability.
Monitor and restrict access to unsubscribe email links to prevent unauthorized disclosure.

Long-Term Security Practices

Regularly update GitLab to the latest version to address security vulnerabilities promptly.
Educate users on the importance of secure email practices to prevent information leaks.

Patching and Updates

Apply security patches and updates provided by GitLab to ensure ongoing protection against vulnerabilities.