CVE-2020-1960 : What You Need to Know

A comprehensive overview of CVE-2020-1960 relating to Apache Flink.

Understanding CVE-2020-1960

Apache Flink vulnerability allowing for a man-in-the-middle attack via JMXReporter.

What is CVE-2020-1960?

Apache Flink versions 1.1.0 to 1.10.0 are susceptible to a vulnerability where an attacker can execute a man-in-the-middle attack through a specially crafted request, compromising data.

The Impact of CVE-2020-1960

The vulnerability permits attackers with local machine and JMX port access to intercept and manipulate the JMXRMI registry, compromising data integrity and confidentiality.

Technical Details of CVE-2020-1960

Insight into the specifics of the CVE.

Vulnerability Description

The flaw allows attackers to rebind the JMXRMI registry to an attacker-controlled one, compromising JMX connections, leading to data extraction.

Affected Systems and Versions

Apache Flink versions 1.1.0 to 1.10.0

Exploitation Mechanism

Attackers locally access the machine and JMX port, executing a man-in-the-middle attack to manipulate the JMXRMI registry.

Mitigation and Prevention

Steps to protect systems from CVE-2020-1960.

Immediate Steps to Take

Disable JMXReporter if not operationally required.
Implement network controls to restrict access to JMX ports.

Long-Term Security Practices

Regularly monitor and update systems for security patches.
Conduct security audits and penetration testing to detect vulnerabilities.

Patching and Updates

Apply the latest patches and updates provided by Apache Flink to address the vulnerability.