CVE-2023-46094 in Conversios.io Plugin
Summary
by MITRE • 10/26/2023
Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Conversios Track Google Analytics 4, Facebook Pixel & Conversions API via Google Tag Manager for WooCommerce plugin
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Analysis
by VulDB Data Team • 11/12/2023
This vulnerability exists within the Conversios Track Google Analytics 4 Facebook Pixel & Conversions API via Google Tag Manager for WooCommerce plugin, which is designed to facilitate tracking and conversion measurement for woocommerce stores. The issue manifests as an unauthorized reflected cross-site scripting flaw that allows attackers to inject malicious scripts into the plugin's response handling mechanisms. The vulnerability specifically impacts the plugin's interaction with google tag manager implementations and woocommerce analytics tracking functionalities, creating a potential entry point for malicious actors to execute arbitrary code within users' browsers. The reflected nature of the vulnerability means that malicious scripts are reflected back to users through the plugin's response handling without proper sanitization or encoding of user-supplied input parameters.
The technical flaw stems from insufficient validation and sanitization of input parameters that are processed by the plugin's tracking and conversion API endpoints. When users interact with the woocommerce store while the plugin is active, specific parameters passed through the web request are not properly escaped or validated before being rendered in the response. This creates an environment where an attacker can craft malicious payloads that exploit the reflected XSS vulnerability by manipulating parameters such as product identifiers, user session data, or tracking event parameters. The vulnerability is particularly concerning because it leverages the plugin's legitimate tracking functionality to deliver malicious payloads, making detection more difficult and increasing the attack surface within woocommerce environments. This flaw aligns with CWE-79 which specifically addresses cross-site scripting vulnerabilities and represents a classic reflected XSS scenario where user input flows directly into the output without proper sanitization.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to hijack user sessions, steal sensitive information, manipulate the woocommerce store interface, and potentially gain unauthorized access to customer data. Attackers can exploit this vulnerability to inject malicious scripts that could redirect users to phishing sites, steal cookies and session tokens, or modify the displayed content of the woocommerce store to deceive customers. The vulnerability affects not only the plugin's functionality but also the broader woocommerce ecosystem, as compromised stores could become part of botnets or be used for further attacks against customers. Given that the plugin integrates with google tag manager and facebook pixel tracking, successful exploitation could lead to data exfiltration through tracking pixels, unauthorized conversion tracking manipulation, and potential compromise of advertising campaign data. This vulnerability also presents a significant risk to business continuity as it could affect customer trust and potentially violate data protection regulations such as gdpr or ccpa.
Mitigation strategies should focus on immediate patching of the vulnerable plugin version and implementation of additional defensive measures. Users should update to the latest version of the plugin where the vulnerability has been addressed through proper input validation and output encoding. Network-level defenses such as web application firewalls can provide additional protection by filtering suspicious input patterns and monitoring for known XSS attack vectors. Input validation should be implemented at multiple layers including parameter sanitization, header validation, and content security policy enforcement to prevent script execution. Organizations should also implement monitoring for unusual traffic patterns and unauthorized modifications to tracking configurations. The vulnerability demonstrates the importance of secure coding practices and input validation in third-party plugins, particularly those handling user data and integrating with external tracking services. Security teams should conduct comprehensive vulnerability assessments of all woocommerce plugins and ensure proper security testing is performed before deployment in production environments. This incident highlights the need for regular security audits of e-commerce platforms and emphasizes the critical role of maintaining updated security patches for third-party integrations. The ATT&CK framework categorizes this vulnerability under the technique of web application exploitation and could be used for initial access or privilege escalation within compromised woocommerce environments.