Subscriber Arbitrary File Upload in IT Residence

Executive Summary

This is a Subscriber Arbitrary File Upload vulnerability in the IT Residence WordPress theme versions 3.2.1 and below. Attackers with subscriber-level access can upload malicious files, such as backdoors, to a website. The flaw has a CVSS score of 9.9, indicating critical severity.

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Detection Guidance

Check for unauthorized file uploads in the IT Residence theme directory. Look for suspicious PHP or executable files in /wp-content/themes/it-residence/. Use commands like 'find /wp-content/themes/it-residence/ -type f -name "*.php"' to list PHP files. Monitor web server logs for unusual POST requests to /wp-content/uploads/.

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Impact Analysis

Exploitation could lead to unauthorized access, website defacement, data theft, or malware distribution. Attackers may gain full control over the site, compromise user data, or use it as a launchpad for further attacks.

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Compliance Impact

This vulnerability could lead to data breaches, violating GDPR (data protection) and HIPAA (healthcare data privacy). Non-compliance may result in legal penalties, fines, and reputational damage due to unauthorized access to sensitive data.

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Mitigation Strategies

Immediately remove the IT Residence theme from your WordPress installation. Replace it with a supported theme. Deploy Patchstack's mitigation rule if available. Ensure all uploaded files are scanned for malware. Restrict file upload permissions to trusted users only.

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