CVE-2020-13336 Explained : Impact and Mitigation

An issue has been discovered in GitLab affecting versions from 11.8 before 12.10.13. GitLab was vulnerable to a stored XSS in the error tracking feature.

Understanding CVE-2020-13336

This CVE involves a stored XSS vulnerability in GitLab versions between 11.8 and 12.10.13.

What is CVE-2020-13336?

The vulnerability allows for improper neutralization of input during web page generation, leading to cross-site scripting (XSS) attacks in GitLab.

The Impact of CVE-2020-13336

CVSS Score: 4 (Medium Severity)
Attack Vector: Network
Attack Complexity: High
Privileges Required: High
User Interaction: Required
Scope: Changed
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: None

Technical Details of CVE-2020-13336

This section provides more in-depth technical details of the vulnerability.

Vulnerability Description

The vulnerability in GitLab versions allows for stored XSS through the error tracking feature.

Affected Systems and Versions

Affected Product: GitLab
Vendor: GitLab
Vulnerable Versions: >=11.8, <12.10.13

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into the error tracking feature, potentially leading to unauthorized access or data theft.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-13336.

Immediate Steps to Take

Update GitLab to version 12.10.13 or later to patch the vulnerability.
Monitor for any suspicious activities or unauthorized access.
Educate users on safe browsing practices to prevent XSS attacks.

Long-Term Security Practices

Regularly update and patch software to prevent known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories from GitLab and apply patches promptly to secure your systems.