CVE-2020-13318 : Security Advisory and Response

A vulnerability was discovered in GitLab versions before 13.0.12, 13.1.10, 13.2.8, and 13.3.4, where GitLab's EKS integration was vulnerable to a cross-account assume role attack.

Understanding CVE-2020-13318

This CVE affects GitLab versions prior to specific releases and poses a risk of improper authorization due to a vulnerability in the EKS integration.

What is CVE-2020-13318?

CVE-2020-13318 is a security vulnerability found in GitLab versions before 13.0.12, 13.1.10, 13.2.8, and 13.3.4, allowing a cross-account assume role attack through the EKS integration.

The Impact of CVE-2020-13318

The vulnerability has a CVSS base score of 6.4, with high confidentiality and integrity impacts, requiring low privileges and user interaction.

Technical Details of CVE-2020-13318

Vulnerability Description

Type: Improper authorization in GitLab

Affected Systems and Versions

Product: GitLab
Versions: >=12.6, <13.0.12; >=13.1, <13.1.10; >=13.2, <13.2.8; >=13.3, <13.3.4

Exploitation Mechanism

Attack Vector: Network
Attack Complexity: High
User Interaction: Required

Mitigation and Prevention

Immediate Steps to Take

Update GitLab to versions 13.0.12, 13.1.10, 13.2.8, or 13.3.4 to mitigate the vulnerability.
Monitor and restrict access to the EKS integration to prevent unauthorized role assumption.

Long-Term Security Practices

Regularly review and update access controls and permissions within GitLab.
Conduct security assessments and audits to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security patches and updates released by GitLab to address known vulnerabilities.