CVE-2019-15579 : Exploit Details and Defense Strategies

A vulnerability in GitLab Community Edition (CE) and Enterprise Edition (EE) versions before 12.3.2, 12.2.6, and 12.1.12 allows guests to access assignees of confidential issues in private projects through milestones.

Understanding CVE-2019-15579

This CVE identifies an information disclosure vulnerability in GitLab versions prior to 12.3.2, 12.2.6, and 12.1.12.

What is CVE-2019-15579?

This vulnerability enables unauthorized guests to view assignees of confidential issues in private projects via milestones in GitLab CE/EE.

The Impact of CVE-2019-15579

The vulnerability poses a risk of exposing sensitive information, potentially compromising the confidentiality of private project data.

Technical Details of CVE-2019-15579

This section provides detailed technical insights into the CVE.

Vulnerability Description

The vulnerability allows guests to access assignees of confidential issues in private projects through milestones in GitLab versions before 12.3.2, 12.2.6, and 12.1.12.

Affected Systems and Versions

Product: GitLab CE/EE
Vendor: GitLab
Vulnerable Versions:
GitLab versions before 12.3.2
GitLab versions before 12.2.6
GitLab versions before 12.1.12

Exploitation Mechanism

Unauthorized guests can exploit this vulnerability by accessing milestones in private projects to reveal assignees of confidential issues.

Mitigation and Prevention

Protect your systems and data from CVE-2019-15579 with the following measures:

Immediate Steps to Take

Upgrade GitLab CE/EE to version 12.3.2 or higher to mitigate the vulnerability.
Restrict guest access to confidential information in private projects.

Long-Term Security Practices

Regularly monitor and audit access controls in GitLab to prevent unauthorized disclosures.
Educate users on the importance of data confidentiality and secure information sharing practices.

Patching and Updates

Stay informed about security updates and patches released by GitLab to address vulnerabilities like CVE-2019-15579.