Unauthenticated Path Traversal in W3 Total Cache

Executive Summary

This is an unauthenticated path traversal vulnerability in the W3 Total Cache WordPress plugin versions 2.10.2 and below. It allows attackers to access files outside the intended directory structure without authentication.

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Detection Guidance

Check if the W3 Total Cache plugin version is 2.10.2 or below. Look for unusual file access patterns or requests containing path traversal sequences like '../' in web server logs.

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Impact Analysis

Attackers could exploit this to compromise websites, potentially leading to unauthorized access, data theft, or website defacement. It may affect thousands of sites regardless of size or popularity.

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Compliance Impact

This vulnerability does not directly affect compliance with GDPR or HIPAA as it is a technical flaw in a WordPress plugin. However, exploitation could lead to unauthorized access to sensitive data, potentially violating GDPR's data protection principles or HIPAA's security rules if such data is compromised.

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Mitigation Strategies

Update the W3 Total Cache plugin to version 2.10.3 or later. If updating is not possible, apply the Patchstack mitigation rule to block attacks until an update is available.

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