CVE-2020-5396 Explained : Impact and Mitigation

VMware GemFire and VMware Tanzu GemFire for VMs are affected by a vulnerability that allows remote code execution due to an insecure default configuration in the JMX service.

Understanding CVE-2020-5396

This CVE identifies a security issue in VMware GemFire and VMware Tanzu GemFire for VMs that could lead to remote code execution.

What is CVE-2020-5396?

CVE-2020-5396 highlights a vulnerability in GemFire products where an insecure default configuration in the JMX service can be exploited by a malicious user to execute remote code.

The Impact of CVE-2020-5396

The vulnerability in GemFire products could result in unauthorized remote code execution, posing a significant security risk to affected systems.

Technical Details of CVE-2020-5396

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue arises from an insecure default configuration in the JMX service of VMware GemFire and VMware Tanzu GemFire for VMs, allowing the creation of an MLet mbean by a malicious user, leading to remote code execution.

Affected Systems and Versions

VMware Tanzu GemFire for VMs versions 1.10 and 1.11
VMware GemFire versions 9.7, 9.8, 9.9, and 9.10

Exploitation Mechanism

The vulnerability occurs when GemFire products are deployed without a SecurityManager, enabling malicious users to exploit the insecure default configuration in the JMX service.

Mitigation and Prevention

Protecting systems from CVE-2020-5396 is crucial to prevent potential security breaches.

Immediate Steps to Take

Apply the necessary security patches provided by VMware Tanzu for GemFire products.
Implement strict access controls and authentication mechanisms to restrict unauthorized access.
Deploy SecurityManager to enhance the security of GemFire deployments.

Long-Term Security Practices

Regularly update and patch GemFire products to address security vulnerabilities promptly.
Conduct security audits and assessments to identify and mitigate potential risks.

Patching and Updates

Stay informed about security updates and patches released by VMware Tanzu for GemFire products.
Ensure timely application of patches to maintain a secure environment.