CVE-2021-39897 : Vulnerability Insights and Analysis

CVE-2021-39897 involves improper access control in GitLab versions 12.9 to 13.0.1, potentially allowing unauthorized access to projects. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-39897

This section delves into the specifics of the vulnerability.

What is CVE-2021-39897?

CVE-2021-39897 is a security flaw in GitLab versions 12.9 to 13.0.1 that enables subgroup members to retain access to projects even after transitioning subgroups.

The Impact of CVE-2021-39897

Discover the implications of this vulnerability.

CVSS Base Score: 2.6 (Low)
Attack Vector: Network
Scope: Unchanged
User Interaction: Required
Confidentiality Impact: Low
Integrity Impact: None
Privileges Required: Low

Technical Details of CVE-2021-39897

Explore the technical aspects of the CVE in this section.

Vulnerability Description

The vulnerability allows subgroup members with inherited access to a project to maintain access even after subgroup transfers.

Affected Systems and Versions

Affected Product: GitLab
Vulnerable Versions:
=12.9, <12.9.8

=12.10, <12.10.7

=13.0, <13.0.1

Exploitation Mechanism

The flaw stems from improper access control implementation, enabling unauthorized access post-group transfers.

Mitigation and Prevention

Learn how to mitigate and prevent exploitation of this vulnerability.

Immediate Steps to Take

Update GitLab to versions 12.9.8, 12.10.7, or 13.0.1.
Review and adjust project access permissions.

Long-Term Security Practices

Regularly review and update access controls within GitLab.
Educate users on the importance of access control management.

Patching and Updates

GitLab has released patches in versions 12.9.8, 12.10.7, and 13.0.1 to address this vulnerability.