Authenticated Information Disclosure in Koollab LMS via Quiz Answers Exposure

Executive Summary

This vulnerability is an information disclosure issue in Koollab LMS where an authenticated learner can access correct quiz answers through the course status endpoint without completing the assessment legitimately. This compromises the integrity of assessments by allowing users to obtain answers unfairly.

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Detection Guidance

To detect this vulnerability, monitor network traffic for unauthorized access to the course status endpoint in Koollab LMS. Check logs for repeated requests from authenticated learner accounts that retrieve quiz answers without legitimate assessment completion.

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Impact Analysis

If you are a user of Koollab LMS, this vulnerability could allow learners to cheat on quizzes by obtaining answers without proper completion. For administrators, it undermines the fairness and reliability of assessments, potentially leading to incorrect grading and loss of trust in the system.

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Compliance Impact

This vulnerability may impact compliance with standards requiring data integrity and secure assessment processes, such as GDPR (data protection) or HIPAA (healthcare data). Unauthorized access to quiz answers could violate integrity requirements, leading to potential non-compliance and legal risks.

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Mitigation Strategies

Immediately update Koollab LMS to the latest patched version. Restrict access to the course status endpoint to only necessary roles. Review logs for any suspicious activity and revoke unauthorized access.

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