Reflected XSS in Joomdle Extension via Moodle Wrapper

Executive Summary

This is a reflected Cross-Site Scripting (XSS) vulnerability in the Joomdle extension for Joomla, specifically affecting versions before 3.1.1. The vulnerability exists in the 'goto url' parameter of the moodle wrapper endpoint, allowing attackers to inject malicious scripts that execute in the context of a user's browser.

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Detection Guidance

To detect this reflected XSS vulnerability in Joomdle versions before 3.1.1, inspect HTTP requests to the Joomdle Moodle wrapper endpoint for the 'goto' URL parameter. Look for unsanitized user input reflected in responses. Use tools like Burp Suite or OWASP ZAP to intercept and analyze requests to paths containing '/moodle/wrapper.php?goto='. Check if the parameter value is reflected without proper encoding.

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Impact Analysis

An attacker could exploit this to steal user sessions, perform actions on behalf of users, or deliver malware. Users visiting a compromised Joomdle page might unknowingly execute malicious scripts, leading to data theft or unauthorized access.

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Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection principles or HIPAA's security requirements. Organizations may face compliance breaches if user data is compromised due to this XSS flaw.

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Mitigation Strategies

Update Joomdle to version 3.1.1 or later to address the reflected XSS vulnerability in the goto url parameter of the moodle wrapper endpoint.

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