CVE-2019-11544 : Exploit Details and Defense Strategies
Learn about CVE-2019-11544, a vulnerability in GitLab versions 8.x to 11.x, enabling unauthorized users to access restricted information. Find mitigation steps and update recommendations here.
A vulnerability has been identified in versions 8.x, 9.x, 10.x, and 11.x of both GitLab Community and Enterprise Edition, enabling the disclosure of information to unauthorized users.
Understanding CVE-2019-11544
This CVE pertains to a security issue in GitLab versions prior to 11.8.9, 11.9.x before 11.9.10, and 11.10.x before 11.10.2, allowing non-members of a project to receive restricted notifications.
What is CVE-2019-11544?
This vulnerability in GitLab allows non-project members who have subscribed to notifications to receive emails about events that are restricted due to issue and repository limitations.
The Impact of CVE-2019-11544
The vulnerability enables unauthorized users to access information that should be restricted, potentially leading to data leakage and privacy breaches.
Technical Details of CVE-2019-11544
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The issue in GitLab Community and Enterprise Edition versions 8.x, 9.x, 10.x, and 11.x before specific updates allows for information disclosure to unauthorized users.
Affected Systems and Versions
- GitLab Community and Enterprise Edition versions 8.x, 9.x, 10.x, and 11.x
- Versions prior to 11.8.9, 11.9.x before 11.9.10, and 11.10.x before 11.10.2
Exploitation Mechanism
Unauthorized users who are not project members but have subscribed to notifications can exploit this vulnerability to receive emails about restricted events.
Mitigation and Prevention
Protecting systems from CVE-2019-11544 is crucial to maintaining data security.
Immediate Steps to Take
- Update GitLab to versions 11.8.9, 11.9.10, or 11.10.2 to mitigate the vulnerability.
- Review and adjust project notification settings to restrict access to sensitive information.
Long-Term Security Practices
- Regularly monitor and review user access and permissions within GitLab.
- Educate users on the importance of not subscribing to notifications for projects they are not members of.
Patching and Updates
- Apply security patches promptly to ensure that known vulnerabilities are addressed and system security is maintained.