CVE-2021-4372 : Vulnerability Insights and Analysis

A Stored Cross-Site Scripting vulnerability has been discovered in the WooCommerce Dynamic Pricing and Discounts plugin for WordPress, affecting versions up to and including 2.4.1. This vulnerability allows unauthenticated attackers to execute malicious JavaScript when an administrator accesses the settings area of the site.

Understanding CVE-2021-4372

This section provides an overview of the CVE-2021-4372 vulnerability in the WooCommerce Dynamic Pricing and Discounts plugin.

What is CVE-2021-4372?

The WooCommerce Dynamic Pricing and Discounts plugin for WordPress is susceptible to Stored Cross-Site Scripting in versions up to 2.4.1 due to missing sanitization on imported settings, allowing attackers to execute malicious scripts.

The Impact of CVE-2021-4372

The vulnerability poses a medium severity risk, enabling unauthenticated attackers to inject and execute malicious JavaScript code, potentially compromising the security of the affected website.

Technical Details of CVE-2021-4372

In this section, we delve into the technical aspects of the CVE-2021-4372 vulnerability.

Vulnerability Description

The vulnerability arises from inadequate sanitization of settings imported via the import() function, permitting the execution of malicious JavaScript by importing a settings file.

Affected Systems and Versions

The vulnerability affects versions of the WooCommerce Dynamic Pricing and Discounts plugin up to and including 2.4.1, leaving them prone to Stored Cross-Site Scripting attacks.

Exploitation Mechanism

Unauthenticated attackers can exploit the vulnerability by importing a settings file with malicious JavaScript, which triggers when an administrator accesses the settings area.

Mitigation and Prevention

To safeguard against CVE-2021-4372, immediate steps and long-term security practices are recommended.

Immediate Steps to Take

Website administrators using the affected plugin should update to version 2.4.2 or later immediately to mitigate the vulnerability. It is also advised to thoroughly review and sanitize imported settings to prevent the execution of malicious scripts.

Long-Term Security Practices

Regularly updating plugins, implementing application security best practices, and monitoring for suspicious activities can enhance the overall security posture of WordPress websites.

Patching and Updates

Security patches addressing the Stored Cross-Site Scripting vulnerability in the WooCommerce Dynamic Pricing and Discounts plugin are included in version 2.4.2, which should be applied promptly to secure the plugin against exploitation.