CVE-2020-9480 : What You Need to Know

Apache Spark 2.4.5 and earlier versions are affected by a vulnerability that allows remote code execution through a specially-crafted RPC to the master, enabling unauthorized execution of shell commands on the host machine.

Understanding CVE-2020-9480

In this section, we will delve into the details of the CVE-2020-9480 vulnerability affecting Apache Spark.

What is CVE-2020-9480?

CVE-2020-9480 is a vulnerability in Apache Spark 2.4.5 and earlier versions that allows an attacker to execute shell commands on the host machine by exploiting a flaw in the standalone resource manager's master authentication mechanism.

The Impact of CVE-2020-9480

The vulnerability can lead to unauthorized remote code execution on the Spark cluster, posing a significant security risk to affected systems. It does not impact Spark clusters using other resource managers like YARN or Mesos.

Technical Details of CVE-2020-9480

Let's explore the technical aspects of CVE-2020-9480 in Apache Spark.

Vulnerability Description

The flaw in Apache Spark 2.4.5 and earlier versions allows an attacker to bypass authentication and start an application's resources on the cluster, leading to potential shell command execution on the host.

Affected Systems and Versions

Product: Apache Spark
Vendor: Apache Software Foundation
Versions Affected: Apache Spark 2.4.5 and earlier

Exploitation Mechanism

Attackers can exploit a specially-crafted RPC to the master to initiate resource allocation without the required shared secret authentication.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2020-9480 vulnerability in Apache Spark.

Immediate Steps to Take

Upgrade Apache Spark to a patched version that addresses the vulnerability.
Implement network segmentation to restrict access to Spark clusters.
Monitor and audit Spark cluster activities for suspicious behavior.

Long-Term Security Practices

Regularly update and patch Apache Spark to protect against known vulnerabilities.
Conduct security training for personnel managing Spark clusters to enhance awareness of potential threats.

Patching and Updates

Stay informed about security advisories and updates from Apache Spark.
Apply patches promptly to ensure the security of Spark deployments.