CVE-2021-24330 : What You Need to Know

The Funnel Builder by CartFlows plugin before version 1.6.13 for WordPress is vulnerable to authenticated stored Cross-Site Scripting (XSS) due to unsanitized settings. This vulnerability could allow privileged users to inject malicious scripts, posing a risk of executing them on plugin-generated pages or the entire website.

Understanding CVE-2021-24330

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-24330.

What is CVE-2021-24330?

The Funnel Builder by CartFlows plugin versions prior to 1.6.13 are susceptible to an authenticated stored Cross-Site Scripting (XSS) vulnerability. This flaw arises from inadequate sanitization of facebook_pixel_id and google_analytics_id settings, enabling authorized adversaries to insert XSS payloads.

The Impact of CVE-2021-24330

The security issue allows high-privileged users to embed malicious scripts into the vulnerable settings, potentially leading to the execution of these scripts on pages generated by the plugin or the entire website, depending on configuration.

Technical Details of CVE-2021-24330

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

Vulnerability Description

The vulnerability in Funnel Builder by CartFlows before version 1.6.13 emerges from the lack of proper sanitization in facebook_pixel_id and google_analytics_id settings, empowering authenticated users to introduce XSS payloads.

Affected Systems and Versions

Funnel Builder by CartFlows plugin versions earlier than 1.6.13 are impacted by this XSS vulnerability.

Exploitation Mechanism

Adversaries with adequate privileges can exploit this vulnerability by inserting crafted XSS payloads into the facebook_pixel_id and google_analytics_id settings.

Mitigation and Prevention

In this section, we outline immediate steps and long-term practices to enhance security and address CVE-2021-24330.

Immediate Steps to Take

Update the Funnel Builder by CartFlows plugin to version 1.6.13 or later to mitigate the XSS vulnerability.
Regularly monitor for security advisories and apply security patches promptly.

Long-Term Security Practices

Employ web application firewalls to detect and block malicious traffic.
Implement strict input validation and output encoding practices.

Patching and Updates

Regularly check for updates from the plugin vendor and ensure timely installation of patches to safeguard against known vulnerabilities.