Authentication Bypass in 53AIHub Leading to Profile Overwrite

Executive Summary

53AIHub through version 0.5.3 has a missing authentication vulnerability. Unauthenticated attackers can overwrite any enterprise's profile by sending PUT requests to /api/enterprises/:id. The vulnerability exists because UpdateEnterprise only enforces checks when IS_SAAS is true, allowing attackers to enumerate sequential enterprise IDs and overwrite logos, display names, and branding for defacement or phishing.

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Detection Guidance

To detect this vulnerability, monitor network traffic for PUT requests to /api/enterprises/:id endpoints. Check for unauthenticated requests or sequential ID enumeration attempts. Inspect server logs for unauthorized profile updates or defacement activities.

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Impact Analysis

Attackers could deface your enterprise's profile by changing logos, display names, or branding. This could lead to phishing attacks against your customers or partners, damaging your reputation. Unauthorized changes could also mislead users into trusting malicious content.

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Compliance Impact

This vulnerability could lead to unauthorized data modification, violating integrity requirements in GDPR and HIPAA. It may also result in misrepresentation of entities, potentially breaching compliance with accuracy and authenticity standards in these regulations.

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Mitigation Strategies

Immediately enforce authentication checks for all PUT requests to /api/enterprises/:id. Disable IS_SAAS mode if not required or ensure UpdateEnterprise enforces checks regardless of IS_SAAS. Update to the latest version of 53AIHub if available.

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