CVE-2019-15733 : Security Advisory and Response

A vulnerability has been found in versions 7.12 through 12.2.1 of both GitLab Community and Enterprise Edition. Unauthorized users may access the default branch name.

Understanding CVE-2019-15733

This CVE identifies a security issue in GitLab versions 7.12 through 12.2.1, where unauthorized users can view the default branch name.

What is CVE-2019-15733?

This CVE pertains to a vulnerability in GitLab Community and Enterprise Edition versions 7.12 through 12.2.1, allowing unauthorized access to the default branch name.

The Impact of CVE-2019-15733

The vulnerability could lead to unauthorized users viewing sensitive information, potentially compromising the security and confidentiality of projects.

Technical Details of CVE-2019-15733

This section provides technical insights into the vulnerability.

Vulnerability Description

The default branch name in GitLab versions 7.12 through 12.2.1 can be accessed by unauthorized users, posing a security risk.

Affected Systems and Versions

GitLab Community Edition 7.12 through 12.2.1
GitLab Enterprise Edition 7.12 through 12.2.1

Exploitation Mechanism

Unauthorized users can exploit this vulnerability to gain access to the default branch name without proper authorization.

Mitigation and Prevention

Protect your systems and data from CVE-2019-15733 with these mitigation strategies.

Immediate Steps to Take

Upgrade GitLab to a version where the vulnerability is patched.
Restrict access permissions to sensitive information.

Long-Term Security Practices

Regularly monitor and audit access controls within GitLab.
Educate users on the importance of secure access practices.

Patching and Updates

Apply security patches provided by GitLab promptly to address this vulnerability.