CVE-2021-4337 : Vulnerability Insights and Analysis

This article provides insights into CVE-2021-4337, a vulnerability found in multiple XforWooCommerce add-on plugins for WordPress, allowing unauthorized access to sensitive data.

Understanding CVE-2021-4337

CVE-2021-4337 is a vulnerability that affects various XforWooCommerce plugins, enabling attackers with subscriber-level permissions to access and modify WordPress and plugin settings.

What is CVE-2021-4337?

Sixteen XforWooCommerce Add-On Plugins for WordPress have an authorization bypass vulnerability due to a missing capability check on the wp_ajax_svx_ajax_factory function in specific versions. This flaw allows authenticated attackers to read, edit, or delete WordPress settings, plugin settings, and list all users on a site.

The Impact of CVE-2021-4337

The affected plugins include Product Filter for WooCommerce, Improved Product Options for WooCommerce, Improved Sale Badges for WooCommerce, and others. Attackers can exploit this issue to gain unauthorized access to sensitive information, posing a severe risk to website security.

Technical Details of CVE-2021-4337

This section covers the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a missing capability check in the wp_ajax_svx_ajax_factory function, allowing attackers with subscriber-level access or higher to manipulate site and plugin settings.

Affected Systems and Versions

The vulnerability affects multiple XforWooCommerce plugins, such as Product Filter for WooCommerce < 8.2.0, Improved Product Options for WooCommerce < 5.3.0, and others listed in the descriptions.

Exploitation Mechanism

By exploiting the missing capability check, authenticated attackers can bypass authorization controls and perform unauthorized actions on a WordPress site.

Mitigation and Prevention

To address CVE-2021-4337, immediate steps, long-term security practices, and patching procedures are crucial.

Immediate Steps to Take

Site owners should update the affected plugins to the secure versions and monitor for any unauthorized activity on their WordPress websites.

Long-Term Security Practices

Implementing robust user access controls, regular security audits, and staying informed about potential vulnerabilities can enhance the security posture of WordPress sites.

Patching and Updates

Developers of the affected plugins have released security patches to address the vulnerability. It is recommended to promptly apply these updates to secure WordPress installations.