JeecgBoot Missing Authorization in SysUserController

Executive Summary

JeecgBoot through 3.9.5 has a missing authorization vulnerability in the batchEditUsers handler of SysUserController. Any authenticated user can send PUT requests to /sys/user/batchEditUsers with arbitrary user and department IDs to edit user department assignments. This allows low-privileged attackers to move users, including administrators, between departments and overwrite positions.

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Detection Guidance

To detect this vulnerability, monitor for PUT requests to /sys/user/batchEditUsers with arbitrary user and department IDs. Check logs for unauthorized department changes or position overwrites. Use network monitoring tools to inspect HTTP PUT requests targeting this endpoint.

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Impact Analysis

An attacker could escalate privileges by moving administrators to different departments, manipulate user roles or permissions, or disrupt organizational structure. Unauthorized department changes may lead to data access issues or compliance violations. The vulnerability enables privilege escalation without requiring high-level access.

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Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection principles or HIPAA's access controls. Unauthorized user role changes may result in improper data handling, potentially causing compliance breaches. Organizations using JeecgBoot must address this to maintain regulatory compliance.

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Mitigation Strategies

Immediately update JeecgBoot to a version beyond 3.9.5. Implement strict input validation for user and department IDs in the batchEditUsers endpoint. Restrict PUT requests to /sys/user/batchEditUsers to authorized roles only. Review logs for signs of exploitation and revoke unauthorized department changes.

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