EmpireCMS Cross Site Scripting Vulnerability

Executive Summary

This vulnerability is a cross-site scripting (XSS) flaw in EmpireSoft EmpireCMS versions up to 8.0. It exists in the file /e/member/mspace/index.php where the spacename argument is improperly handled, allowing malicious scripts to be injected and executed in a user's browser.

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Detection Guidance

Detecting this vulnerability requires checking for EmpireCMS installations and testing for XSS via the spacename parameter in /e/member/mspace/index.php. Inspect web server logs for requests to this path with unusual spacename values. Use tools like curl to send test payloads such as <script>alert(1)</script> in the spacename parameter and observe responses.

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Impact Analysis

An attacker could exploit this to steal user sessions, deface websites, or deliver malware. Since the exploit is public, the risk of real-world attacks is higher. Users of vulnerable EmpireCMS installations may have their data compromised or be redirected to malicious sites.

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Compliance Impact

This XSS flaw could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality requirements. For HIPAA, it may expose protected health information if exploited, risking compliance with safeguards for electronic protected health information.

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Mitigation Strategies

• Update EmpireCMS to the latest version if a patch is available.
• Apply input validation and output encoding to sanitize the spacename parameter to prevent XSS attacks.
• Restrict access to the /e/member/mspace/index.php endpoint if possible.
• Monitor network traffic for suspicious activity targeting this path.

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