CVE-2024-11943 in 우커머스 결제 플러그인 Plugin
Summary
by MITRE • 12/07/2024
The 워드프레스 결제 심플페이 – 우커머스 결제 플러그인 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 5.2.2. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 02/21/2025
The vulnerability identified as CVE-2024-11943 affects the WordPress payment plugin known as SimplePay - WooCommerce Payment Plugin which is specifically designed to facilitate payment processing for WooCommerce stores. This plugin serves as an integration point between WordPress-based e-commerce platforms and various payment gateways, making it a critical component in the online payment infrastructure. The vulnerability exists within the plugin's handling of URL parameters and query strings, specifically in how it processes user-supplied input without proper sanitization or escaping mechanisms.
The technical flaw manifests in the plugin's use of the add_query_arg function without appropriate escaping of URL parameters. This function is commonly used in WordPress to add or modify query parameters in URLs, but when combined with insufficient input validation and output escaping, it creates a pathway for reflected cross-site scripting attacks. The vulnerability affects all versions up to and including 5.2.2, indicating that the developers failed to implement proper security measures in their codebase. This particular implementation flaw allows attackers to inject malicious scripts into URLs that are then reflected back to users who visit those URLs, making it a classic reflected XSS vulnerability.
The operational impact of this vulnerability is significant for WordPress site administrators and their customers. Since the vulnerability is accessible to unauthenticated attackers, anyone who can influence the URL parameters can potentially execute malicious scripts in a victim's browser. This means that a successful attack could allow attackers to steal session cookies, perform unauthorized transactions, redirect users to malicious websites, or even modify the content displayed to users. The attack requires social engineering to trick users into clicking on malicious links, but once clicked, the script executes in the victim's browser context with the privileges of that user. This vulnerability directly maps to CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, and could be categorized under ATT&CK technique T1583.001 for the creation of malicious links used in phishing campaigns.
Mitigation strategies for this vulnerability should include immediate patching of the plugin to version 5.2.3 or later where the escaping issue has been resolved. Site administrators should also implement additional security measures such as Content Security Policy headers to limit script execution, regular monitoring of plugin updates, and implementing web application firewalls that can detect and block malicious URL patterns. The vulnerability demonstrates the importance of proper input validation and output escaping in web applications, particularly when dealing with user-supplied data that may be reflected back to users. Organizations should also conduct regular security assessments of their WordPress plugins and ensure that all third-party components are kept up to date with the latest security patches. The incident highlights the critical nature of secure coding practices and the need for developers to follow established security guidelines when implementing URL parameter handling in web applications.