CVE-2021-32718 : Security Advisory and Response

RabbitMQ, a multi-protocol messaging broker, was vulnerable to an XSS issue in its management UI prior to version 3.8.17. This vulnerability allowed for potential JavaScript code execution in the context of the page when a new user was added with elevated permissions.

Understanding CVE-2021-32718

This CVE refers to the improper neutralization of script-related HTML tags in a web page (basic XSS) within the RabbitMQ management UI.

What is CVE-2021-32718?

A flaw in RabbitMQ's management UI allowed for the execution of JavaScript code when a new user with elevated permissions was added, exposing the system to potential exploitation.

The Impact of CVE-2021-32718

The vulnerability could lead to unauthorized JavaScript code execution in the context of the page, posing a risk to the integrity of the system.

Technical Details of CVE-2021-32718

This section provides a detailed overview of the vulnerability.

Vulnerability Description

The issue stemmed from the lack of proper

<script>

tag sanitization, enabling attackers to execute malicious code in the context of the page.

Affected Systems and Versions

RabbitMQ versions prior to 3.8.17 were affected by this vulnerability.

Exploitation Mechanism

Attackers could exploit this vulnerability by adding a new user with elevated permissions via the management UI.

Mitigation and Prevention

Protecting your system from CVE-2021-32718 is critical for maintaining security.

Immediate Steps to Take

To mitigate the risk, it's recommended to disable the

rabbitmq_management

plugin and use CLI tools for management operations.

Long-Term Security Practices

Implementing strict input sanitization and regular security checks can help prevent similar vulnerabilities in the future.

Patching and Updates

Ensure that your RabbitMQ software is updated to version 3.8.17 or newer to patch the vulnerability and enhance system security.