CVE-2021-24626 Explained : Impact and Mitigation

A detailed overview of CVE-2021-24626, a security vulnerability in the Chameleon CSS WordPress plugin version <= 1.2 that exposes users to SQL Injection due to inadequate checks in AJAX calls.

Understanding CVE-2021-24626

This section dives into the impact, technical details, and mitigation strategies for the Chameleon CSS plugin vulnerability.

What is CVE-2021-24626?

The Chameleon CSS WordPress plugin version <= 1.2 is susceptible to SQL Injection as it lacks proper CSRF and capability checks in its AJAX calls, potentially enabling unauthorized actions by authenticated users like subscribers.

The Impact of CVE-2021-24626

The absence of CSRF and capability checks in AJAX calls allows authenticated users, including subscribers, to execute unauthorized actions. Additionally, the remove_css AJAX call fails to sanitize the css_id POST parameter, introducing a SQL Injection risk.

Technical Details of CVE-2021-24626

Explore the specifics of the vulnerability, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The flaw in the Chameleon CSS WordPress plugin version <= 1.2 permits SQL Injection through inadequate CSRF and capability checks in AJAX calls, posing a security threat to user data and database integrity.

Affected Systems and Versions

Chameleon CSS version 1.2 and below are impacted by this vulnerability, leaving websites utilizing these versions exposed to potential SQL Injection attacks.

Exploitation Mechanism

Unauthorized users, such as subscribers, can exploit the vulnerability by utilizing AJAX calls without proper CSRF and capability checks, particularly the remove_css call that lacks input sanitization.

Mitigation and Prevention

Learn how to protect your systems from CVE-2021-24626 through immediate and long-term security measures.

Immediate Steps to Take

Website administrators are advised to update the Chameleon CSS plugin to a secure version, implement strict input validation, and monitor for any suspicious activities that could indicate an exploitation attempt.

Long-Term Security Practices

Establish a robust security policy that includes regular security audits, prompt application of security patches, user permission reviews, and training to enhance awareness of web security best practices.

Patching and Updates

It is crucial to stay informed about security updates released by the plugin provider and promptly apply patches to prevent exploitation of known vulnerabilities.