DOM-Based XSS in ElementInvader Addons for Elementor

Executive Summary

This vulnerability is a Cross-site Scripting (XSS) issue found in the Element Invader Addons for Elementor plugin. Specifically, it is a DOM-Based XSS caused by improper neutralization of input during web page generation. This means that malicious input can be injected and executed in the context of a user's browser when they visit a page using this plugin, potentially allowing attackers to run arbitrary scripts.

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Detection Guidance

This vulnerability is a DOM-Based Cross-Site Scripting (XSS) issue in the ElementInvader Addons for Elementor plugin. Detection involves checking if the vulnerable plugin version is installed on your WordPress site.

• Check the installed version of the ElementInvader Addons for Elementor plugin. If the version is 1.4.3 or lower, the system is vulnerable.
• Use WordPress command-line tools or manually inspect the plugin list in the WordPress admin dashboard under 'Plugins' to verify the plugin version.

For network-level detection, you can scan for WordPress sites running the vulnerable plugin using tools like WPScan or custom scripts that check HTTP headers or page responses for indicators of the plugin's presence.

• Example WPScan command to check for the plugin: wpscan --url [your-wordpress-site] --enumerate vp --plugins-detection aggressive

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Impact Analysis

This vulnerability can have several impacts including unauthorized actions performed on behalf of the user, theft of sensitive information such as cookies or session tokens, and potential full compromise of the affected web application. The CVSS score of 7.1 indicates a high severity with impacts on confidentiality, integrity, and availability.

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Compliance Impact

This vulnerability, a DOM-Based Cross-Site Scripting (XSS) issue, can impact compliance with standards and regulations like GDPR and HIPAA due to its potential to compromise data confidentiality, integrity, and availability.

• GDPR: The vulnerability may lead to unauthorized access to user data or session hijacking, violating GDPR's requirements for data protection and privacy (e.g., Article 5 on data integrity and confidentiality, Article 32 on security of processing).
• HIPAA: If the affected software processes or stores protected health information (PHI), this vulnerability could result in unauthorized access or disclosure of PHI, violating HIPAA's Security Rule (e.g., 45 CFR Part 164, Subpart C).
• Other standards: The CVSS score of 7.1 (with impacts on confidentiality, integrity, and availability) may also conflict with requirements in frameworks like ISO 27001, which mandate protection against such vulnerabilities.

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Mitigation Strategies

To mitigate this vulnerability, follow these steps immediately:

• Update the ElementInvader Addons for Elementor plugin to the latest version if a patch is available. Since the CVE states the issue affects versions up to and including 1.4.3, check for updates beyond this version.
• If no patch is available, disable or uninstall the plugin until a fix is released to eliminate the risk of exploitation.
• Implement a Web Application Firewall (WAF) to block XSS attacks targeting this vulnerability. Configure rules to filter malicious input patterns.
• Monitor your WordPress site for unusual activity, such as unexpected script injections or unauthorized changes to web pages.
• Educate users and administrators about the risks of XSS attacks and ensure they avoid clicking on suspicious links or inputting untrusted data.

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