CVE-2022-3154 in Woo Billingo Plus Plugin
Summary
by MITRE • 10/11/2022
The Woo Billingo Plus WordPress plugin before 4.4.5.4, Integration for Billingo & Gravity Forms WordPress plugin before 1.0.4, Integration for Szamlazz.hu & Gravity Forms WordPress plugin before 1.2.7 are lacking CSRF checks in various AJAX actions, which could allow attackers to make logged in Shop Managers and above perform unwanted actions, such as deactivate the plugin's license
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Analysis
by VulDB Data Team • 10/11/2022
The vulnerability described in CVE-2022-3154 represents a critical security flaw affecting multiple WordPress plugins that integrate billing and form management functionalities. This issue specifically impacts the Woo Billingo Plus plugin version 4.4.5.4 and earlier, as well as the Integration for Billingo & Gravity Forms plugin version 1.0.4 and earlier, along with the Integration for Szamlazz.hu & Gravity Forms plugin version 1.2.7 and earlier. These plugins are designed to facilitate seamless integration between WordPress sites and various billing services, creating a complex ecosystem that requires robust security measures to protect against unauthorized modifications.
The core technical flaw lies in the absence of Cross-Site Request Forgery (CSRF) protection mechanisms within multiple AJAX actions implemented by these plugins. This omission creates a significant attack surface where authenticated users with Shop Manager privileges or higher can be coerced into executing unintended operations without their knowledge or explicit consent. The vulnerability operates at the application layer and directly violates the principle of least privilege by allowing attackers to manipulate plugin configurations through maliciously crafted requests that appear legitimate to the WordPress system. According to CWE-352, this represents a classic cross-site request forgery vulnerability that enables unauthorized actions to be performed on behalf of authenticated users.
The operational impact of this vulnerability is particularly concerning for e-commerce environments where Shop Managers and administrators maintain critical plugin configurations. Attackers can exploit this weakness to deactivate plugin licenses, effectively disabling essential billing and payment processing functionalities without the knowledge of legitimate users. This type of attack can lead to significant business disruption, revenue loss, and potential data integrity issues. The vulnerability aligns with ATT&CK technique T1078.004 which describes valid accounts used for persistence and privilege escalation, as attackers leverage existing authenticated sessions to perform unauthorized modifications. The attack vector typically involves tricking users into clicking malicious links or visiting compromised websites that automatically submit requests to the vulnerable WordPress installations.
Security professionals should implement immediate mitigations including updating all affected plugins to their latest versions, which contain proper CSRF token validation mechanisms. The WordPress plugin ecosystem should enforce mandatory CSRF protection for all AJAX endpoints, particularly those modifying plugin configurations or performing administrative tasks. Network-level protections such as web application firewalls can help detect and block suspicious AJAX requests, though these should complement rather than replace proper code-level fixes. Regular security audits of WordPress plugins should include verification of CSRF protection implementation, and administrators should maintain comprehensive backup strategies to quickly restore functionality if attacks occur. The vulnerability demonstrates the importance of following secure coding practices and adheres to OWASP Top Ten security principles, specifically addressing the risk of insufficient logging and monitoring that could allow such attacks to go undetected while causing significant operational damage.