CVE-2021-25646 Explained : Impact and Mitigation

Apache Druid includes a vulnerability that allows authenticated users to execute arbitrary code by overriding system configurations. This issue affects versions 0.20.0 and earlier of Apache Druid. Find out more about the impact, technical details, and mitigation strategies related to CVE-2021-25646.

Understanding CVE-2021-25646

In Apache Druid 0.20.0 and earlier, authenticated users can manipulate requests to execute JavaScript code on the server, leading to remote code execution.

What is CVE-2021-25646?

Apache Druid versions <= 0.20.0 allow authenticated users to exploit a vulnerability that enables the execution of arbitrary code by overriding system configurations.

The Impact of CVE-2021-25646

This vulnerability can be leveraged by authenticated users to execute code on the target machine with the privileges of the Druid server process.

Technical Details of CVE-2021-25646

Vulnerability Description

Apache Druid 0.20.0 and earlier versions enable the execution of user-provided JavaScript code in requests by authenticated users, regardless of server configuration.

Affected Systems and Versions

Product: Apache Druid
Vendor: Apache Software Foundation
Affected Version: 0.20.0 and earlier

Exploitation Mechanism

An authenticated user sends a specially-crafted request to force Druid to execute user-provided JavaScript code, leading to arbitrary code execution on the server.

Mitigation and Prevention

Immediate Steps to Take

To mitigate this issue, users are advised to upgrade to Druid version 0.20.1. Additionally, restricting network access to cluster machines only to trusted hosts is recommended.

Long-Term Security Practices

Implement secure coding practices, regular security audits, and stay informed about security updates for Apache Druid.

Patching and Updates

Stay updated with the latest security patches and adhere to version upgrades to ensure a secure Apache Druid deployment.