CVE-2022-1673 in WooCommerce Green Wallet Gateway Plugin
Summary
by MITRE • 06/08/2022
The WooCommerce Green Wallet Gateway WordPress plugin before 1.0.2 does not escape the error_envision query parameter before outputting it to the page, leading to a Reflected Cross-Site Scripting vulnerability.
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Analysis
by VulDB Data Team • 06/10/2022
The vulnerability identified as CVE-2022-1673 affects the WooCommerce Green Wallet Gateway WordPress plugin version 1.0.1 and earlier, presenting a critical reflected cross-site scripting flaw that can be exploited by malicious actors to execute arbitrary code in the context of a victim's browser. This vulnerability stems from insufficient input validation and output escaping mechanisms within the plugin's handling of the error_envision query parameter, which is used to display error messages to users during payment processing transactions. The issue occurs when the plugin fails to properly sanitize user-supplied data before rendering it in the web page output, creating an avenue for attackers to inject malicious scripts that can persistently compromise user sessions and data integrity.
The technical implementation of this vulnerability involves the plugin's failure to apply proper HTML escaping to the error_envision parameter when it is processed and displayed on the page. When a user accesses a payment page with a maliciously crafted error_envision parameter, the plugin directly outputs this unfiltered data without appropriate sanitization, allowing attackers to inject JavaScript code that executes in the victim's browser context. This reflected XSS vulnerability operates by tricking users into clicking malicious links that contain crafted payloads in the query string, where the malicious code is then executed when the page loads and displays the error message. The vulnerability is classified under CWE-79 as a failure to escape output, specifically manifesting as a reflected cross-site scripting flaw that allows attackers to inject client-side scripts into web pages viewed by other users.
The operational impact of CVE-2022-1673 extends beyond simple script execution, as it can lead to session hijacking, credential theft, and potential data exfiltration from authenticated users. Attackers can leverage this vulnerability to steal user session cookies, gain unauthorized access to customer accounts, and manipulate payment transactions within the WooCommerce ecosystem. The reflected nature of this vulnerability means that attackers do not need to store malicious code on the server, making detection more challenging as the malicious payloads are delivered through the URL itself. This vulnerability is particularly dangerous in e-commerce environments where users perform sensitive financial transactions, as it can compromise the entire payment processing workflow and potentially lead to financial fraud and data breaches.
Mitigation strategies for CVE-2022-1673 require immediate action to upgrade the WooCommerce Green Wallet Gateway plugin to version 1.0.2 or later, which contains the necessary patches to properly escape the error_envision parameter. System administrators should also implement additional security measures including input validation, output encoding, and regular security audits of WordPress plugins to prevent similar vulnerabilities from occurring. The mitigation approach aligns with ATT&CK technique T1590 which involves reconnaissance activities to identify vulnerabilities, and T1211 which covers the exploitation of input validation weaknesses. Organizations should also consider implementing web application firewalls and content security policies to provide additional layers of protection against reflected XSS attacks. The vulnerability demonstrates the critical importance of proper input sanitization and output escaping in web applications, particularly in payment processing systems where security failures can have severe financial and reputational consequences.