CVE-2020-11969 : Exploit Details and Defense Strategies

Apache TomEE with an embedded ActiveMQ broker may open an unauthenticated JMX port, impacting versions 1.0.0 to 8.0.1.

Understanding CVE-2020-11969

This CVE affects Apache TomEE versions 1.0.0 to 8.0.1 due to an unauthenticated JMX port opened when using the embedded ActiveMQ broker.

What is CVE-2020-11969?

If Apache TomEE is configured with the embedded ActiveMQ broker and includes the useJMX=true parameter in the broker URI, it opens an unauthenticated JMX port on TCP port 1099, leading to potential security risks.

The Impact of CVE-2020-11969

The vulnerability allows for information disclosure due to the lack of authentication on the JMX port, potentially exposing sensitive data to unauthorized users.

Technical Details of CVE-2020-11969

Apache TomEE's vulnerability lies in the misconfiguration of the embedded ActiveMQ broker, leading to the opening of an unauthenticated JMX port.

Vulnerability Description

When the ActiveMQ broker URI in Apache TomEE includes the useJMX=true parameter, it opens an unauthenticated JMX port on TCP port 1099, allowing unauthorized access.

Affected Systems and Versions

Apache TomEE 8.0.0-M1 to 8.0.1
Apache TomEE 7.1.0 to 7.1.2
Apache TomEE 7.0.0-M1 to 7.0.7
Apache TomEE 1.0.0 to 1.7.5

Exploitation Mechanism

By exploiting the misconfigured ActiveMQ broker URI, attackers can gain unauthorized access to the JMX port on TCP port 1099, potentially leading to information disclosure.

Mitigation and Prevention

To address CVE-2020-11969, follow these mitigation strategies:

Immediate Steps to Take

Disable the useJMX=true parameter in the ActiveMQ broker URI.
Implement network-level access controls to restrict access to the JMX port.
Monitor network traffic for any unauthorized access attempts.

Long-Term Security Practices

Regularly update Apache TomEE to the latest version to patch known vulnerabilities.
Conduct security audits to identify and address any misconfigurations in the ActiveMQ broker.

Patching and Updates

Apply patches provided by Apache TomEE to fix the vulnerability and enhance system security.