Lara Dashboard Unauthorized File Upload to RCE

Executive Summary

Lara Dashboard before version 1.3.2 does not properly restrict access to file upload endpoints for images and videos. Authenticated users without specific content permissions can upload files. Attackers can exploit this by uploading polyglot files (files with multiple interpretations) with malicious extensions to the public web directory. If the server executes these files, it may lead to remote code execution.

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Detection Guidance

Check for unauthorized file uploads in the public web root directory of Lara Dashboard installations. Look for files with unexpected extensions or polyglot files. Review server logs for POST requests to /post-builder/upload-image or /post-builder/upload-video endpoints from accounts without content permissions.

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Impact Analysis

This vulnerability allows attackers to upload malicious files to your server, potentially leading to unauthorized code execution. This could result in data breaches, defacement of your website, or further compromise of your system. Even if attackers cannot execute code, they may upload files that appear legitimate but contain harmful content.

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Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection requirements and HIPAA's security rules. A successful exploit may result in data breaches, leading to legal penalties, reputational damage, and loss of trust. Organizations must ensure proper access controls to maintain compliance.

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Mitigation Strategies

Upgrade Lara Dashboard to version 1.3.2 or later. Restrict file upload permissions to only authorized accounts with content permissions. Disable execution permissions for uploaded files in the web root directory. Monitor for any suspicious file uploads or unauthorized access attempts.

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