CVE-2019-19376 Explained : Impact and Mitigation
Discover the impact of CVE-2019-19376 on Octopus Deploy. Learn about the denial of service issue caused by a flaw in the Team API and how to mitigate this vulnerability.
Octopus Deploy before version 2019.10.6 was vulnerable to a denial of service issue due to a flaw in the Team API. This CVE allowed a user with TeamEdit permission to exploit the vulnerability.
Understanding CVE-2019-19376
This CVE highlights a security vulnerability in Octopus Deploy versions prior to 2019.10.6 that could be exploited by authenticated users with specific permissions.
What is CVE-2019-19376?
In Octopus Deploy versions before 2019.10.6, a user with TeamEdit permission could manipulate a flawed request in the Team API, bypassing input validation and leading to a denial of service issue at the application level.
The Impact of CVE-2019-19376
The vulnerability allowed attackers to disrupt the normal operation of Octopus Deploy instances, potentially causing service interruptions and affecting system availability.
Technical Details of CVE-2019-19376
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The flaw in Octopus Deploy versions before 2019.10.6 enabled users with TeamEdit permission to send a malformed Team API request, circumventing input validation and triggering a denial of service condition.
Affected Systems and Versions
- Octopus Deploy versions before 2019.10.6
- LTS versions 2019.9.8 and 2019.6.14
Exploitation Mechanism
- Authenticated user with TeamEdit permission sends a malformed Team API request
- Bypasses input validation
- Results in an application-level denial of service condition
Mitigation and Prevention
Protecting systems from CVE-2019-19376 involves immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade Octopus Deploy to version 2019.10.6 or later
- Apply patches for LTS versions 2019.9.8 and 2019.6.14
- Review and adjust user permissions to limit exposure
Long-Term Security Practices
- Regularly review and update access controls and permissions
- Conduct security training for users to prevent misuse of permissions
Patching and Updates
- Ensure timely installation of security patches and updates
- Monitor vendor notifications for any future vulnerabilities