CVE-2024-2172 in Web Application Firewall Plugin
Summary
by MITRE • 03/13/2024
The Malware Scanner plugin and the Web Application Firewall plugin for WordPress (both by MiniOrange) are vulnerable to privilege escalation due to a missing capability check on the mo_wpns_init() function in all versions up to, and including, 4.7.2 (for Malware Scanner) and 2.1.1 (for Web Application Firewall). This makes it possible for unauthenticated attackers to escalate their privileges to that of an administrator.
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Analysis
by VulDB Data Team • 04/13/2026
The vulnerability identified as CVE-2024-2172 affects two critical security plugins within the WordPress ecosystem, specifically the Malware Scanner and Web Application Firewall plugins developed by MiniOrange. These plugins are widely deployed across WordPress installations to provide essential security protections against malicious activity and unauthorized access attempts. The vulnerability stems from a fundamental flaw in the privilege management mechanisms within these security tools, creating a dangerous escalation path for attackers who might otherwise lack sufficient access rights to compromise the target system.
The technical flaw resides in the mo_wpns_init() function which fails to perform adequate capability checks before executing privileged operations. This missing validation represents a classic security oversight where the function assumes that any user attempting to invoke it possesses the necessary administrative privileges. According to CWE-284, this constitutes an improper access control vulnerability where the system fails to properly verify user permissions before granting elevated privileges. The absence of proper authentication and authorization checks creates an exploitable condition where unauthenticated attackers can manipulate the plugin's functionality to gain administrative access to the WordPress installation.
The operational impact of this vulnerability is severe and far-reaching within the WordPress security landscape. An unauthenticated attacker who successfully exploits this privilege escalation flaw can immediately assume full administrative control over the affected WordPress site. This level of access enables complete compromise of the system, allowing attackers to modify content, install malicious plugins, alter user accounts, and potentially use the compromised site as a launching point for further attacks against other systems within the network. The vulnerability affects all versions up to and including 4.7.2 for Malware Scanner and 2.1.1 for Web Application Firewall, representing a significant portion of deployed instances that remain at risk.
The exploitation of this vulnerability aligns with tactics described in the MITRE ATT&CK framework under the privilege escalation category, specifically targeting the "T1068 - Exploitation for Privilege Escalation" technique. Attackers can leverage this flaw to bypass standard security controls that are typically in place to prevent unauthorized access to administrative functions. The vulnerability is particularly concerning because it affects security plugins that are expected to provide protection against exactly these types of attacks, creating a dangerous paradox where the security tools themselves become attack vectors. Organizations relying on these plugins for their WordPress security posture face significant risk of complete system compromise, potentially leading to data breaches, service disruption, and reputational damage.
Mitigation strategies should prioritize immediate patching of affected versions to address the missing capability checks in the mo_wpns_init() function. System administrators should also implement additional monitoring and access control measures to detect unauthorized privilege escalation attempts. The remediation process must ensure that all capability checks are properly enforced before any administrative operations are executed, following established security best practices for authentication and authorization. Organizations should conduct comprehensive security assessments to verify that no unauthorized administrative access has occurred and consider implementing additional security layers such as web application firewalls and intrusion detection systems to protect against similar vulnerabilities in the future.