CVE-2020-13276 Explained : Impact and Mitigation

A vulnerability in GitLab allows users to set an email as a notification email without verifying it, affecting versions up to 13.0.1.

Understanding CVE-2020-13276

This CVE involves improper authorization in GitLab, posing a high severity risk.

What is CVE-2020-13276?

The vulnerability enables users to designate an email as a notification email without undergoing verification in GitLab versions prior to 13.0.1.

The Impact of CVE-2020-13276

The vulnerability has a high severity base score of 7.4, allowing attackers to exploit it with low privileges required and network access.

Technical Details of CVE-2020-13276

This section provides detailed technical insights into the CVE.

Vulnerability Description

The vulnerability allows users to set unverified emails as notification emails in GitLab versions up to 13.0.1.

Affected Systems and Versions

GitLab versions <12.9.8
GitLab versions >=12.10, <12.10.7
GitLab versions >=13.0, <13.0.1

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Availability Impact: Low
Confidentiality Impact: Low
Integrity Impact: Low
Privileges Required: Low
Scope: Changed
User Interaction: None

Mitigation and Prevention

Protect your systems from CVE-2020-13276 with these mitigation strategies.

Immediate Steps to Take

Update GitLab to version 13.0.1 or later to patch the vulnerability.
Monitor email settings for unauthorized changes.

Long-Term Security Practices

Implement multi-factor authentication for enhanced security.
Regularly audit and review user permissions and settings.

Patching and Updates

Apply security patches promptly to ensure protection against known vulnerabilities.