CVE-2019-13121 Explained : Impact and Mitigation

A vulnerability was found in GitLab Enterprise Edition 10.6 to 12.0.2, allowing unauthorized parties to send requests to local network resources due to a Server-Side Request Forgery (SSRF) security flaw.

Understanding CVE-2019-13121

This CVE pertains to a security vulnerability in GitLab Enterprise Edition versions 10.6 through 12.0.2, specifically related to the integration with GitHub projects.

What is CVE-2019-13121?

This vulnerability, known as Server-Side Request Forgery (SSRF), enables attackers to manipulate the integration with GitHub projects, leading to unauthorized requests to local network resources due to inadequate access control measures.

The Impact of CVE-2019-13121

The SSRF vulnerability in GitLab Enterprise Edition versions 10.6 to 12.0.2 could result in unauthorized access to local network resources, potentially exposing sensitive data and compromising system integrity.

Technical Details of CVE-2019-13121

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The GitHub project integration in GitLab Enterprise Edition versions 10.6 through 12.0.2 is susceptible to SSRF attacks, allowing unauthorized parties to send requests to local network resources.

Affected Systems and Versions

GitLab Enterprise Edition 10.6 to 12.0.2

Exploitation Mechanism

The vulnerability arises from incorrect access control measures within the integration with GitHub projects, enabling attackers to manipulate requests to local network resources.

Mitigation and Prevention

Protecting systems from CVE-2019-13121 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update GitLab Enterprise Edition to a patched version that addresses the SSRF vulnerability.
Monitor network traffic for any suspicious activity that may indicate exploitation of the vulnerability.

Long-Term Security Practices

Implement strict access controls and proper input validation to prevent SSRF attacks.
Conduct regular security assessments and audits to identify and mitigate similar vulnerabilities.

Patching and Updates

Apply security patches provided by GitLab to fix the SSRF vulnerability in affected versions.