Pre-authentication Blind SQL Injection in Koollab LMS

Executive Summary

This is a pre-authentication blind SQL injection flaw in Koollab LMS. An attacker can exploit it via the SSO OAuth endpoint without logging in. The attack uses a time-based SQL oracle to read sensitive database data, including personal information, credentials, and valid JWT tokens that could allow account takeover.

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Detection Guidance

Detecting this vulnerability requires checking for time-based SQL injection via the SSO OAuth endpoint in Koollab LMS. Monitor for unusual delays in responses from the endpoint when sending crafted SQL queries. Use tools like sqlmap to test for blind SQL injection by sending time-delay payloads to the OAuth endpoint.

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Impact Analysis

An unauthenticated attacker could access your personal data, login credentials, and session tokens stored in the database. This may lead to identity theft, unauthorized account access, or further attacks on connected systems using stolen credentials.

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Compliance Impact

This vulnerability likely violates GDPR due to unauthorized access to personal data and HIPAA if protected health information was exposed. It results in non-compliance with data protection requirements, potentially leading to legal penalties and reputational damage.

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Mitigation Strategies

Immediately patch Koollab LMS to the latest version. Disable the vulnerable SSO OAuth endpoint if a patch is unavailable. Implement input validation and parameterized queries to prevent SQL injection. Monitor network traffic for suspicious activity targeting the OAuth endpoint.

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