CVE-2020-13338 : Security Advisory and Response

An issue has been discovered in GitLab affecting versions prior to 12.10.13, 13.0.8, 13.1.2. This vulnerability involves a stored cross-site scripting vulnerability when editing references.

Understanding CVE-2020-13338

This CVE identifies a stored cross-site scripting vulnerability in GitLab versions.

What is CVE-2020-13338?

CVE-2020-13338 is a security vulnerability found in GitLab versions before 12.10.13, 13.0.8, and 13.1.2. It allows for stored cross-site scripting attacks during reference editing.

The Impact of CVE-2020-13338

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 5.4. It requires user interaction and low privileges to exploit, affecting confidentiality and integrity.

Technical Details of CVE-2020-13338

This section provides technical insights into the vulnerability.

Vulnerability Description

The vulnerability involves improper neutralization of input during web page generation, specifically related to cross-site scripting in GitLab.

Affected Systems and Versions

Product: GitLab
Versions Affected:
=8.10.0, <12.10.13

=13.0, <13.0.8

=13.1, <13.1.2

Exploitation Mechanism

The vulnerability can be exploited through network-based attacks requiring low privileges and user interaction.

Mitigation and Prevention

Protecting systems from CVE-2020-13338 is crucial for maintaining security.

Immediate Steps to Take

Update GitLab to versions 12.10.13, 13.0.8, or 13.1.2 to eliminate the vulnerability.
Educate users on safe editing practices to prevent cross-site scripting attacks.

Long-Term Security Practices

Regularly monitor and audit web content for potential vulnerabilities.
Implement security training for developers to enhance code security practices.

Patching and Updates

Stay informed about security patches and updates released by GitLab.
Apply patches promptly to ensure protection against known vulnerabilities.