Authorization Bypass in Multi-Tenant Platform via ID Parameter Manipulation

Executive Summary

This vulnerability allows a non-global organization admin in one tenant to bypass tenant boundaries. By exploiting a mismatch between authorization checks (based on ?id= parameter) and the action performed (based on request body), they can delete, create, or modify resources in any other tenant.

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Impact Analysis

If exploited, this vulnerability could lead to unauthorized access and manipulation of resources across different tenants. This may result in data loss, unauthorized modifications, or disruption of services in affected tenants.

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Compliance Impact

This vulnerability allows unauthorized access and modification of resources across tenant boundaries, which could lead to unauthorized data exposure or manipulation. This may violate data protection requirements under GDPR (e.g., unauthorized access to personal data) and HIPAA (e.g., unauthorized access to protected health information).

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Mitigation Strategies

Implement strict tenant boundary checks in authorization logic to ensure actions are validated against the correct tenant ID. Review and update access controls to prevent cross-tenant modifications. Audit all admin actions for unauthorized resource changes across tenants.

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