CVE-2017-0926 Explained : Impact and Mitigation

Gitlab Community Edition version 10.3 is vulnerable to an improper authorization issue in the Oauth sign-in component, allowing unauthorized user login.

Understanding CVE-2017-0926

The vulnerability in GitLab Community Edition version 10.3 poses a security risk due to improper authorization.

What is CVE-2017-0926?

The Oauth sign-in component in GitLab Community Edition version 10.3 has a vulnerability that permits unauthorized users to log in because of an improper authorization issue.

The Impact of CVE-2017-0926

This vulnerability could lead to unauthorized access to GitLab instances, potentially compromising sensitive data and system integrity.

Technical Details of CVE-2017-0926

GitLab Community and Enterprise Editions versions 9.1.0 to 10.3.3 are affected by this vulnerability.

Vulnerability Description

The vulnerability allows unauthorized users to log in due to an improper authorization issue in the Oauth sign-in component of GitLab Community Edition version 10.3.

Affected Systems and Versions

Product: GitLab Community and Enterprise Editions
Versions Affected: 9.1.0 - 10.3.3
Fixed Versions: 10.0.5, 10.1.6, 10.2.6, 10.3.4

Exploitation Mechanism

Unauthorized users can exploit this vulnerability to gain access to GitLab instances by leveraging the improper authorization in the Oauth sign-in component.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update GitLab to the fixed versions: 10.0.5, 10.1.6, 10.2.6, or 10.3.4
Monitor user logins for any suspicious activity
Implement multi-factor authentication for enhanced security

Long-Term Security Practices

Regularly review and update access control policies
Conduct security audits and penetration testing to identify vulnerabilities

Patching and Updates

Stay informed about security advisories from GitLab
Apply patches and updates promptly to ensure the security of GitLab instances