CVE-2017-0920 : What You Need to Know

GitLab Community and Enterprise Editions before versions 10.1.6, 10.2.6, and 10.3.4 are susceptible to an authorization bypass vulnerability in the Projects::MergeRequests::CreationsController component, enabling unauthorized users to access all project names and their respective namespaces.

Understanding CVE-2017-0920

This CVE involves an authorization bypass issue in GitLab Community and Enterprise Editions.

What is CVE-2017-0920?

Prior to versions 10.1.6, 10.2.6, and 10.3.4, GitLab Community and Enterprise Editions contain a security flaw in the Projects::MergeRequests::CreationsController, allowing unauthorized users to bypass authorization and view all project names and namespaces.

The Impact of CVE-2017-0920

The vulnerability permits unauthorized access to sensitive project information on affected GitLab instances.

Technical Details of CVE-2017-0920

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in GitLab Community and Enterprise Editions allows unauthorized users to bypass authorization and view project names and namespaces.

Affected Systems and Versions

Product: GitLab Community and Enterprise Editions
Vendor: GitLab
Vulnerable Versions: Before 10.1.6, 10.2.6, and 10.3.4

Exploitation Mechanism

Unauthorized users can exploit the vulnerability to access project names and namespaces on GitLab instances.

Mitigation and Prevention

Protecting systems from CVE-2017-0920 is crucial for maintaining security.

Immediate Steps to Take

Upgrade affected GitLab instances to versions 10.1.6, 10.2.6, or 10.3.4 to mitigate the vulnerability.
Monitor and restrict access to sensitive project information.

Long-Term Security Practices

Regularly update GitLab software to the latest secure versions.
Implement access controls and authentication mechanisms to prevent unauthorized access.

Patching and Updates

Apply security patches and updates provided by GitLab to address vulnerabilities and enhance system security.