CVE-2018-20493 : Security Advisory and Response
Learn about CVE-2018-20493, a security flaw in GitLab Community and Enterprise Edition versions before 11.4.13, 11.5.6, and 11.6.1, allowing unauthorized access. Find mitigation steps here.
A flaw was found in the versions 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1 of GitLab Community and Enterprise Edition, leading to an incorrect implementation of access control.
Understanding CVE-2018-20493
This CVE identifies a security vulnerability in GitLab Community and Enterprise Edition versions prior to 11.4.13, 11.5.6, and 11.6.1.
What is CVE-2018-20493?
CVE-2018-20493 is a security flaw in GitLab that results from an incorrect implementation of access control in certain versions of GitLab Community and Enterprise Edition.
The Impact of CVE-2018-20493
The vulnerability could allow unauthorized users to gain access to sensitive information or perform unauthorized actions within the affected GitLab instances.
Technical Details of CVE-2018-20493
This section provides more technical insights into the CVE.
Vulnerability Description
The issue in GitLab versions before 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1 arises from an incorrect access control implementation.
Affected Systems and Versions
- GitLab Community and Enterprise Edition versions 11.4.13, 11.5.x before 11.5.6, and 11.6.x before 11.6.1
Exploitation Mechanism
Unauthorized users may exploit this vulnerability to bypass access controls and gain unauthorized access to sensitive data or perform unauthorized actions.
Mitigation and Prevention
Protect your systems from CVE-2018-20493 with the following steps:
Immediate Steps to Take
- Update GitLab to versions 11.4.13, 11.5.6, or 11.6.1, which contain fixes for this vulnerability.
- Review and adjust access control settings to ensure proper restrictions.
Long-Term Security Practices
- Regularly monitor and audit access controls within GitLab to detect any unauthorized access attempts.
- Educate users on the importance of access control and data security practices.
Patching and Updates
- Stay informed about security updates and patches released by GitLab and promptly apply them to your systems to prevent exploitation of known vulnerabilities.