Missing Signature Validation in JWT in Otalio Ship Property Management System

Executive Summary

Missing signature validation in JSON Web Tokens (JWTs) in Otalio Ship Property Management System versions before 2.22.0 allows authenticated attackers to escalate privileges by tampering with JWTs. Attackers can modify the JWT's expiration claim to an extremely high value or alter role claims to gain super user access.

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Detection Guidance

Check for JWT tokens in HTTP requests or responses that lack proper signature validation. Inspect Authorization headers for tampered JWTs with modified claims like exp set to unrealistic values (e.g., 99999999999999). Use tools like Burp Suite or OWASP ZAP to intercept and analyze JWTs for missing signature verification.

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Impact Analysis

This vulnerability allows attackers to impersonate users, gain unauthorized access to sensitive data, and perform malicious activities. Exploitation requires editing the Authorization header via proxy or browser console and knowledge of super user role details.

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Mitigation Strategies

Upgrade to Otalio SPMS version 2.22.0 or later to apply the patch. Ensure JWT libraries enforce signature validation and reject tokens with invalid or missing signatures. Monitor for unauthorized privilege escalation attempts by reviewing access logs and user roles.

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