SQL Injection in MCMS through FreeMarker Template

Executive Summary

This vulnerability is a SQL injection flaw in the front-end interface /cms/category/list of MCMS version 6.2.0 or earlier. The issue occurs because the size parameter is directly inserted into the SQL LIMIT clause without proper sanitization or parameterization. Attackers can exploit this to inject malicious SQL code, including stacked statements, without authentication.

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Detection Guidance

To detect this SQL injection vulnerability in MCMS <=6.2.0, inspect HTTP requests to /cms/category/list for the size parameter. Test by appending SQL payloads like size=1;SHOW TABLES-- to observe database responses. Use tools like sqlmap with --data='size=1' to automate detection.

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Impact Analysis

An attacker could exploit this to read, modify, or delete sensitive data in the database, execute administrative operations, or bypass authentication. Since no login is required, any user accessing the vulnerable interface could be at risk of unauthorized database access or manipulation.

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Compliance Impact

This vulnerability could lead to unauthorized data access or exposure, violating GDPR's data protection principles and HIPAA's security requirements for protected health information. Organizations using affected MCMS versions may face compliance violations, legal penalties, and reputational damage due to potential data breaches.

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Mitigation Strategies

Immediately upgrade MCMS to a version beyond 6.2.0 if available. If not, apply input validation to sanitize the size parameter, blocking special characters. Disable stacked queries in your database configuration. Monitor logs for suspicious requests to /cms/category/list.

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