CVE-2021-22193 : Security Advisory and Response

An issue has been discovered in GitLab that affects versions starting from 7.1, allowing a member of a private group to validate the use of a specific name for a private project.

Understanding CVE-2021-22193

This CVE affects GitLab versions starting from 7.1, leading to information exposure through an error message.

What is CVE-2021-22193?

The vulnerability in GitLab allows a member of a private group to validate a specific name for a private project, potentially exposing sensitive information.

The Impact of CVE-2021-22193

With a CVSS base score of 3.5, this low-severity vulnerability could result in information exposure through error messages, affecting confidentiality.

Technical Details of CVE-2021-22193

This section covers the specific technical details of the vulnerability.

Vulnerability Description

The issue in GitLab allows a member of a private group to validate the use of a specific name for a private project, leading to potential information exposure.

Affected Systems and Versions

GitLab versions starting from 7.1 are affected by this vulnerability, including versions >=13.8, <13.8.2; >=13.7, <13.7.6; and >=7.1, <13.6.6.

Exploitation Mechanism

The exploit involves a member of a private group validating the use of a specific name for a private project, potentially allowing access to sensitive information.

Mitigation and Prevention

To address CVE-2021-22193, immediate steps, long-term security practices, and patching updates are essential.

Immediate Steps to Take

Ensure that private group members do not have the ability to validate specific names for private projects and review access controls.

Long-Term Security Practices

Implement strong access controls, regularly monitor for unauthorized actions, and educate users on secure practices.

Patching and Updates

Apply the necessary patches provided by GitLab to address the vulnerability in affected versions.