CVE-2019-19631 Explained : Impact and Mitigation

A vulnerability has been found in versions 6.2 through 6.2.4, 6.3 through 6.3.9, 7.0 through 7.0.3, and 7.1 through 7.1.3 of Big Switch Big Monitoring Fabric; versions 4.5 through 4.5.5, 4.7 through 4.7.7, 5.0 through 5.0.1, and 5.1 through 5.1.4 of Big Cloud Fabric; and version 1.1.0 of Multi-Cloud Director. This vulnerability allows a user with read-only access to gain unauthorized access to sensitive information by using an API endpoint that exposes session cookies of authenticated administrators. This can result in privilege escalation.

Understanding CVE-2019-19631

This CVE identifies a security vulnerability in Big Switch Big Monitoring Fabric, Big Cloud Fabric, and Multi-Cloud Director that could lead to unauthorized access and privilege escalation.

What is CVE-2019-19631?

CVE-2019-19631 is a security flaw that enables a read-only user to access sensitive data through an API endpoint, potentially leading to privilege escalation.

The Impact of CVE-2019-19631

The vulnerability allows unauthorized users to gain access to sensitive information and potentially escalate their privileges within the affected systems.

Technical Details of CVE-2019-19631

This section provides more in-depth technical details about the vulnerability.

Vulnerability Description

The vulnerability in Big Switch Big Monitoring Fabric, Big Cloud Fabric, and Multi-Cloud Director allows read-only users to exploit an API endpoint to access session cookies of authenticated administrators, leading to unauthorized access and privilege escalation.

Affected Systems and Versions

Big Switch Big Monitoring Fabric: versions 6.2 - 7.1.3
Big Cloud Fabric: versions 4.5 - 5.1.4
Multi-Cloud Director: version 1.1.0

Exploitation Mechanism

The vulnerability is exploited by utilizing an API endpoint that exposes session cookies of authenticated administrators, enabling unauthorized users to access sensitive information and potentially escalate their privileges.

Mitigation and Prevention

To address CVE-2019-19631, follow these mitigation and prevention strategies:

Immediate Steps to Take

Disable read-only access for users where possible.
Monitor API endpoints for suspicious activities.
Implement multi-factor authentication to enhance security.

Long-Term Security Practices

Regularly update and patch the affected systems.
Conduct security training for users to raise awareness of potential threats.
Perform regular security audits to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by the vendor to fix the vulnerability.
Stay informed about security advisories and updates from the vendor.