Cross-Site Request Forgery in Concrete CMS

Executive Summary

Concrete CMS versions 9.0.0 to a specific point had a vulnerability where the dashboard group type controller did not validate a CSRF token during its delete action. This allowed a remote unauthenticated attacker to trick an authenticated user with group type management permissions into deleting a custom group type through cross-site request forgery.

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Detection Guidance

This vulnerability involves a missing CSRF token validation in Concrete CMS 9.0.0 for dashboard group type deletion. To detect it, inspect Concrete CMS logs for unauthorized group type deletions or check if the delete action in group type management does not require a CSRF token. No specific commands are provided in the context.

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Impact Analysis

An attacker could exploit this to cause unintended deletion of group types in Concrete CMS. This could disrupt user management, remove necessary permissions, or cause data loss if group types are critical to system operations.

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Compliance Impact

This vulnerability does not directly impact compliance with GDPR, HIPAA, or similar standards. It involves a CSRF flaw allowing unauthorized deletion of group types by authenticated users with specific permissions, which is a low-severity issue (CVSS 2.3). No data exposure or integrity loss occurs that would typically trigger regulatory concerns.

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Mitigation Strategies

Update Concrete CMS to the latest version beyond 9.0.0 to ensure the CSRF token validation is properly implemented.

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