CVE-2021-24999 : Exploit Details and Defense Strategies

Booster for WooCommerce Plugin before version 5.4.9 is vulnerable to Reflected Cross-Site Scripting when the Pdf Invoicing module is enabled. An attacker can exploit this issue to inject malicious code.

Understanding CVE-2021-24999

This CVE highlights a security vulnerability in the Booster for WooCommerce Plugin version 5.4.9 and below, allowing for Reflected Cross-Site Scripting attacks.

What is CVE-2021-24999?

The vulnerability lies in how the plugin handles the wcj_notice parameter without proper sanitization, enabling attackers to inject and execute malicious scripts in the admin dashboard.

The Impact of CVE-2021-24999

Exploitation of this vulnerability can lead to unauthorized access, data theft, and potential compromise of the affected WordPress websites.

Technical Details of CVE-2021-24999

This section delves into the specifics of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The Booster for WooCommerce Plugin fails to sanitize the wcj_notice parameter, facilitating Reflected Cross-Site Scripting (XSS) attacks when the Pdf Invoicing module is active.

Affected Systems and Versions

The issue affects Booster for WooCommerce Plugin versions prior to 5.4.9, leaving websites using these versions susceptible to exploitation.

Exploitation Mechanism

By injecting crafted code into the wcj_notice parameter, malicious actors can trick users into executing arbitrary scripts, compromising site integrity.

Mitigation and Prevention

Protecting your website from CVE-2021-24999 requires immediate action and long-term security practices.

Immediate Steps to Take

Disable the Pdf Invoicing module or update to version 5.4.9 of the Booster for WooCommerce Plugin to mitigate the vulnerability.

Long-Term Security Practices

Regularly update plugins, employ web application firewalls, and conduct security audits to prevent future XSS vulnerabilities.

Patching and Updates

Stay informed about security patches released by developers and promptly apply updates to ensure your WordPress site remains secure.