File Upload Vulnerability in DocSys v2.02.80

Executive Summary

This is an arbitrary file upload vulnerability in DocSys V2.02.80. Authenticated users can upload files to the server without proper validation by bypassing admin checks through the absence or manipulation of the 'usage' parameter. Attackers can control the file name and path, potentially uploading malicious files like JSP scripts that could be executed to compromise the server.

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Detection Guidance

Check for unauthorized file uploads to the /uploadDoc.do or /DocSystem/Doc/uploadDoc.do endpoints. Look for unexpected JSP or executable files in server directories. Monitor network traffic for POST requests to these paths with file upload parameters.

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Impact Analysis

This vulnerability allows attackers to upload and execute malicious files on the server, potentially leading to full system compromise. If the server processes uploaded files, attackers could gain control over the system, steal data, or perform other malicious activities.

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Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating compliance requirements for GDPR and HIPAA. It may result in unauthorized exposure of sensitive data, leading to legal penalties, reputational damage, and loss of trust.

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Mitigation Strategies

Disable file upload functionality if not required. Implement strict file type validation and restrict uploads to specific directories. Ensure the 'usage' parameter is properly validated. Update to a patched version if available.

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