CVE-2020-13920 : What You Need to Know

CVE-2020-13920 is a vulnerability in Apache ActiveMQ that allows an attacker to intercept credentials through a Man-in-the-Middle attack.

Understanding CVE-2020-13920

Apache ActiveMQ uses LocateRegistry.createRegistry() to create the JMX RMI registry, potentially exposing the server to unauthorized access.

What is CVE-2020-13920?

This CVE allows an attacker to connect to the registry without authentication, rebind the JMX RMI entry, and intercept credentials when a user connects.

The Impact of CVE-2020-13920

The vulnerability enables a Man-in-the-Middle attack, compromising the confidentiality of credentials and potentially leading to unauthorized access.

Technical Details of CVE-2020-13920

Apache ActiveMQ versions prior to 5.15.12 are affected by this vulnerability.

Vulnerability Description

The issue arises from the use of LocateRegistry.createRegistry() in Apache ActiveMQ, allowing unauthorized access to the JMX RMI registry.

Affected Systems and Versions

Vendor: n/a
Product: Apache ActiveMQ
Affected Versions: Apache ActiveMQ versions prior to 5.15.12

Exploitation Mechanism

Attacker connects to the registry without authentication
Calls the rebind method to intercept credentials
Creates a proxy server to act as a Man-in-the-Middle

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Upgrade to Apache ActiveMQ version 5.15.12
Implement network segmentation to limit access to critical systems

Long-Term Security Practices

Regularly monitor and audit network traffic for suspicious activities
Enforce strong authentication mechanisms to prevent unauthorized access

Patching and Updates

Stay informed about security updates and patches for Apache ActiveMQ
Apply patches promptly to mitigate the risk of exploitation