CVE-2021-22250 : What You Need to Know

A detailed analysis of CVE-2021-22250, a vulnerability in GitLab that allowed users to view and delete impersonation tokens created by administrators.

Understanding CVE-2021-22250

This section delves into the impact, technical details, and mitigation strategies related to CVE-2021-22250.

What is CVE-2021-22250?

CVE-2021-22250 involves improper authorization in GitLab CE/EE, affecting versions since 13.3, enabling users to manipulate impersonation tokens created by administrators.

The Impact of CVE-2021-22250

The vulnerability has a base severity rating of 'MEDIUM' (CVSS score 5.3/10) and could result in unauthorized access to impersonation tokens.

Technical Details of CVE-2021-22250

Explore the specifics of the vulnerability in GitLab including its description, affected systems, and exploitation mechanism.

Vulnerability Description

GitLab versions >=13.3 and <13.12.9, >=14.0 and <14.0.7, and >=14.1 and <14.1.2 are impacted by improper authorization allowing unauthorized access to impersonation tokens.

Affected Systems and Versions

The vulnerability affects GitLab versions 13.3 to 13.12.9, 14.0 to 14.0.7, and 14.1 to 14.1.2.

Exploitation Mechanism

Attackers with low privileges required minimal user interaction to exploit this vulnerability over a network, potentially compromising confidentiality and integrity.

Mitigation and Prevention

Learn how to address the CVE-2021-22250 vulnerability to enhance the security of your GitLab environment.

Immediate Steps to Take

Administrators should update affected GitLab instances to versions that have patched this vulnerability and revoke potentially compromised impersonation tokens.

Long-Term Security Practices

Implement proper authorization mechanisms and conduct regular security audits to detect and mitigate similar vulnerabilities proactively.

Patching and Updates

Stay informed about security updates from GitLab and ensure timely application of patches to protect against known vulnerabilities.