CVE-2024-0433 in Gestpay for WooCommerce Plugin
Summary
by MITRE • 02/28/2024
The Gestpay for WooCommerce plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 20221130. This is due to missing or incorrect nonce validation on the 'ajax_unset_default_card' function. This makes it possible for unauthenticated attackers to remove the default status of a card token for a user via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 02/10/2025
The CVE-2024-0433 vulnerability affects the Gestpay for WooCommerce plugin, a payment processing solution integrated with the WordPress ecosystem. This security flaw represents a critical cross-site request forgery vulnerability that undermines the integrity of user payment token management within e-commerce environments. The vulnerability specifically targets the plugin's ajax_unset_default_card function, which handles the removal of default card status for user payment tokens. The issue exists in all versions up to and including 20221130, indicating a prolonged period during which this weakness remained unaddressed within the plugin's codebase. The vulnerability's impact extends beyond simple data manipulation as it directly affects the security posture of online payment systems where user card information is stored and managed.
The technical implementation flaw stems from the complete absence of proper nonce validation within the ajax_unset_default_card function. Nonce validation serves as a critical security mechanism that ensures requests originate from legitimate sources within the same session context. Without this protection, attackers can forge requests that appear to come from authenticated users, specifically targeting the administrative functions of the payment system. This vulnerability aligns with CWE-352, which defines Cross-Site Request Forgery as a weakness where an attacker tricks a victim into performing actions they did not intend to execute. The missing nonce validation creates a direct pathway for unauthorized modifications to user payment token configurations, effectively allowing attackers to manipulate the default payment methods associated with customer accounts.
The operational impact of this vulnerability is particularly concerning for e-commerce businesses relying on the Gestpay for WooCommerce plugin. An unauthenticated attacker who successfully tricks a site administrator into clicking a malicious link could permanently alter payment token configurations, potentially leading to unauthorized transactions or payment method hijacking. The vulnerability's exploitation requires social engineering to convince administrators to perform actions, but once successful, it creates lasting damage to customer payment security. This weakness directly violates the principle of least privilege and undermines the trust model that payment systems depend upon. The attack vector demonstrates how seemingly innocuous administrative functions can become attack surfaces when proper security controls are omitted, particularly in systems handling sensitive financial data.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The most effective solution involves updating to the latest version of the Gestpay for WooCommerce plugin where nonce validation has been properly implemented for the ajax_unset_default_card function. Administrators should also implement additional security measures such as role-based access controls, regular security audits, and monitoring for suspicious administrative activities. The vulnerability highlights the importance of implementing proper input validation and authentication checks for all AJAX endpoints, particularly those handling sensitive user data modifications. Organizations should consider implementing additional layers of security including multi-factor authentication for administrative accounts and regular penetration testing to identify similar weaknesses in their payment processing systems. This vulnerability also underscores the necessity of adhering to security best practices outlined in frameworks such as the OWASP Top Ten and NIST cybersecurity guidelines, particularly regarding the protection of sensitive data and the implementation of proper authentication mechanisms.