CVE-2022-41135 in Modula Plugin
Summary
by MITRE • 11/19/2022
Unauth. Plugin Settings Change vulnerability in Modula plugin <= 2.6.9 on WordPress.
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Analysis
by VulDB Data Team • 12/20/2022
The CVE-2022-41135 vulnerability represents a critical authorization bypass issue affecting the Modula plugin version 2.6.9 and earlier on WordPress platforms. This flaw allows unauthenticated attackers to modify plugin settings without proper authentication, creating a significant security risk for WordPress sites that utilize this specific plugin. The vulnerability resides within the plugin's handling of administrative functions, where insufficient access controls permit unauthorized users to manipulate core configuration parameters that should only be accessible to authenticated administrators.
The technical implementation of this vulnerability stems from inadequate input validation and access control mechanisms within the Modula plugin's administrative interfaces. Attackers can exploit this weakness by directly accessing specific plugin endpoints that handle setting modifications, bypassing the standard WordPress authentication checks. This type of vulnerability typically falls under CWE-285 which addresses improper authorization in software systems. The flaw demonstrates a failure in the principle of least privilege, where the plugin does not properly verify user credentials before executing administrative operations, allowing any visitor to the site to potentially modify critical plugin configurations.
The operational impact of this vulnerability extends beyond simple configuration changes, as attackers can manipulate various aspects of the plugin's functionality including gallery settings, image handling parameters, and potentially expose sensitive data through misconfigured plugin behaviors. This vulnerability enables attackers to create persistent backdoors, modify plugin behavior to serve malicious content, or disable security features that protect the WordPress installation. The risk is particularly elevated because the Modula plugin is commonly used for image galleries and media management, making it a prime target for attackers seeking to compromise site integrity and user data. Such vulnerabilities can lead to complete site takeover scenarios where attackers gain control over content management and can manipulate user experiences.
Mitigation strategies for CVE-2022-41135 require immediate action including upgrading to Modula plugin version 2.7.0 or later, which contains the necessary patches to address the authorization bypass. Organizations should also implement additional defensive measures such as monitoring for unauthorized administrative changes and restricting access to plugin directories through web server configurations. Network-level protections including firewall rules and web application firewalls can help detect and block exploitation attempts targeting known vulnerable endpoints. Security professionals should also consider implementing the principle of defense in depth by restricting plugin access through .htaccess rules and ensuring that only authorized administrators have access to plugin management interfaces. This vulnerability aligns with ATT&CK technique T1078 which covers legitimate credentials and T1546 which addresses privilege escalation through modification of system processes, demonstrating how unauthenticated access can lead to broader compromise scenarios.