Authentication Bypass in Sharp and Toshiba Tec MFPs

Executive Summary

Sharp and Toshiba Tec multifunction printers (MFPs) do not properly authorize requests to access stored image data. This means unauthorized users might retrieve sensitive documents or images without authentication.

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Detection Guidance

Check for unauthorized access to image data on Sharp and Toshiba Tec MFPs by monitoring network traffic to these devices for unusual requests targeting image storage endpoints. Inspect logs for direct access attempts to image data paths.

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Impact Analysis

Attackers could exploit this to steal confidential documents, images, or other sensitive data stored on the printer. This may lead to data breaches, privacy violations, or unauthorized access to internal information.

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Compliance Impact

This vulnerability could violate GDPR by exposing personal data without authorization. For HIPAA, it may risk protected health information (PHI) exposure. Non-compliance may lead to legal penalties or fines.

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Mitigation Strategies

Restrict network access to affected MFPs by implementing firewall rules to block unauthorized requests. Update firmware to the latest version provided by the vendor. Disable direct access to image data storage if not required.

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