Stored XSS in EMX Tecnologia Gestao X

Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in EMX Tecnologia Gestao X version 8.4 or earlier. It occurs in the Help Chat feature where user input is not properly neutralized before being included in web pages. This allows attackers with authentication to inject malicious JavaScript that executes in the browsers of other authenticated users.

Useful 0 Not Useful 0

Detection Guidance

To detect this Stored XSS vulnerability in EMX Tecnologia Gestao X <= 8.4, inspect the Help Chat functionality for improper input validation. Check if user-supplied JavaScript is rendered without sanitization in web pages. Use browser developer tools to monitor network requests and responses for suspicious payloads. Test by injecting basic XSS payloads like <script>alert(1)</script> in chat inputs and verify if they execute.

Useful 0 Not Useful 0

Impact Analysis

An attacker could exploit this to hijack user sessions, take over accounts, or perform unauthorized actions on behalf of victims. Since it requires authentication, attackers must first gain access to a valid account to exploit this flaw.

Useful 0 Not Useful 0

Compliance Impact

The Stored XSS vulnerability in EMX Tecnologia Gestao X could lead to unauthorized access to sensitive data, potentially violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Attackers could exploit it to steal session tokens or credentials, enabling unauthorized access to personal or health data.

Useful 0 Not Useful 0

Mitigation Strategies

Update EMX Tecnologia Gestao X to the latest version (8.4 or higher) to patch the XSS vulnerability in the Help Chat functionality. If an update is not available, disable the Help Chat feature or restrict access to authenticated users only.

Useful 0 Not Useful 0