Executive Summary

This vulnerability is a PHP Object Injection issue in the eDS Responsive Menu WordPress plugin (versions up to 1.2). It allows a malicious actor with administrator privileges to inject malicious objects, potentially leading to attacks such as code injection, SQL injection, path traversal, and denial of service. The vulnerability is related to deserialization of untrusted data and falls under the OWASP Top 10 category A3: Injection. [1]

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Impact Analysis

If exploited, this vulnerability can lead to severe impacts including unauthorized code execution, database compromise via SQL injection, unauthorized file system access through path traversal, and denial of service conditions. These impacts can compromise the confidentiality, integrity, and availability of your system. Exploitation requires administrator privileges, but the risks remain significant due to the range of possible attacks. [1]

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Detection Guidance

Detection of this vulnerability involves identifying the presence of the vulnerable eDS Responsive Menu plugin version 1.2 or earlier on your WordPress installation. Since the vulnerability requires administrator privileges to exploit, monitoring for unusual administrator activity or unexpected PHP object injection attempts in logs may help. However, no specific detection commands are provided. It is recommended to perform server-side malware scanning and professional incident response if compromise is suspected. [1]

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Mitigation Strategies

Immediate mitigation steps include replacing the vulnerable eDS Responsive Menu plugin with an alternative solution, as the plugin is abandoned and no official fix is available. Simply deactivating the plugin does not fully eliminate the risk unless a virtual patch (vPatch) is applied. Patchstack offers virtual patching to mitigate this vulnerability in the absence of an official fix. Additionally, professional incident response and server-side malware scanning are recommended if compromise is suspected. [1]

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