Deserialization of Untrusted Data in Document Library Pro

Executive Summary

This is a PHP Object Injection vulnerability in the WordPress Document Library Pro plugin by Barn2 Plugins. It affects versions before 4.2.2 and allows unauthenticated attackers to inject malicious objects during deserialization, potentially leading to remote code execution or other harmful server-side actions.

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Detection Guidance

Detecting this vulnerability requires checking the installed version of the Document Library Pro plugin. Use the WordPress admin dashboard or run a command like 'wp plugin list' in the WordPress root directory to verify the version. If the version is below 4.2.2, the system is vulnerable.

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Impact Analysis

An attacker could exploit this to take control of your website, steal sensitive data, or perform unauthorized actions. Since it requires no authentication, it poses a high risk for mass exploitation across vulnerable sites.

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Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR and HIPAA requirements for data protection and security. Non-compliance may result in legal penalties or reputational damage.

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Mitigation Strategies

Immediately update the Document Library Pro plugin to version 4.2.2 or later. If updating is not possible, apply the mitigation rule provided by Patchstack to prevent exploitation. Ensure backups are taken before making changes.

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