CVE-2019-6997 : Vulnerability Insights and Analysis
Learn about CVE-2019-6997, a security flaw in GitLab versions 10.x and 11.x allowing unauthorized guest users to view merge request titles. Find mitigation steps and preventive measures here.
A vulnerability has been found in GitLab Community and Enterprise Edition versions 10.x (beginning from 10.7) and 11.x prior to 11.5.8, 11.6.x prior to 11.6.6, and 11.7.x prior to 11.7.1. This vulnerability relates to an Access Control flaw, where system notes allow guest users to access and view merge request titles.
Understanding CVE-2019-6997
This CVE identifies an Access Control issue in GitLab versions 10.x and 11.x, potentially exposing merge request titles to unauthorized guest users.
What is CVE-2019-6997?
CVE-2019-6997 is a security vulnerability in GitLab Community and Enterprise Edition versions 10.x and 11.x, allowing guest users to view merge request titles due to an Access Control flaw.
The Impact of CVE-2019-6997
The vulnerability could lead to unauthorized access to sensitive information, compromising the confidentiality of merge request titles within affected GitLab versions.
Technical Details of CVE-2019-6997
This section provides detailed technical insights into the CVE.
Vulnerability Description
The issue in GitLab versions 10.x and 11.x involves an Incorrect Access Control problem within system notes, enabling guest users to view merge request titles.
Affected Systems and Versions
- GitLab Community and Enterprise Edition versions 10.x (starting from 10.7) and 11.x before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1.
Exploitation Mechanism
The vulnerability allows unauthorized guest users to access and view merge request titles due to inadequate access controls in system notes.
Mitigation and Prevention
Protect your systems from CVE-2019-6997 with the following steps:
Immediate Steps to Take
- Upgrade affected GitLab instances to versions 11.5.8, 11.6.6, or 11.7.1, which contain fixes for the Access Control flaw.
- Restrict guest user access to sensitive information within GitLab.
Long-Term Security Practices
- Regularly monitor and audit access controls and permissions in GitLab to prevent unauthorized access.
- Educate users on the importance of data confidentiality and access restrictions.
Patching and Updates
- Stay informed about security updates and patches released by GitLab to address vulnerabilities like CVE-2019-6997.