Arbitrary File Upload in Demo Import WordPress Plugin

Executive Summary

This vulnerability affects the Demo Import WordPress plugin version 1.1.3 or earlier. It allows high-privilege users, such as Administrators, to upload executable PHP files to the uploads directory without proper validation. The plugin disables WordPress file-type checks during demo-content import, enabling malicious file uploads.

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Detection Guidance

Check the uploads directory for unexpected PHP files. Look for files with .php extensions in /wp-content/uploads/. Review user activity logs for high-privilege users uploading files. Use WordPress plugins like Wordfence to scan for malicious uploads.

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Impact Analysis

An attacker with Administrator access could upload a PHP file to execute arbitrary code on your server. This could lead to full system compromise, data theft, or unauthorized modifications to your WordPress site. Non-super-admin site administrators on multisite setups are also affected.

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Compliance Impact

This vulnerability could lead to non-compliance with GDPR and HIPAA by allowing unauthorized PHP file uploads. Executable files in the uploads directory may enable attackers to execute malicious code, potentially leading to data breaches or unauthorized access to sensitive information, violating data protection requirements.

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Mitigation Strategies

Update the Demo Import plugin to the latest version if available. Disable file uploads for non-administrative users. Restrict PHP execution in the uploads directory via .htaccess or server configuration. Monitor uploads directory for unauthorized files.

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