CVE-2021-24943 : Security Advisory and Response

A detailed overview of CVE-2021-24943, a vulnerability in the Registrations for the Events Calendar WordPress plugin.

Understanding CVE-2021-24943

This section dives into the specifics of the CVE-2021-24943 vulnerability and its implications.

What is CVE-2021-24943?

The CVE-2021-24943 vulnerability affects the Registrations for the Events Calendar WordPress plugin before version 2.7.6. It occurs due to improper sanitization and escaping of the event_id parameter in the rtec_send_unregister_link AJAX action, potentially leading to an unauthenticated SQL injection.

The Impact of CVE-2021-24943

The vulnerability allows both authenticated and unauthenticated users to exploit an SQL injection, potentially compromising the security and integrity of the affected WordPress websites.

Technical Details of CVE-2021-24943

Explore the technical aspects of the CVE-2021-24943 vulnerability.

Vulnerability Description

The flaw arises from the lack of proper sanitization of the event_id parameter, allowing attackers to inject malicious SQL queries.

Affected Systems and Versions

The issue impacts versions of the Registrations for the Events Calendar plugin that are earlier than 2.7.6.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted requests to the vulnerable AJAX action, leading to SQL injection attacks.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2021-24943 vulnerability.

Immediate Steps to Take

Website administrators should update the plugin to version 2.7.6 or later to address the SQL injection vulnerability.

Long-Term Security Practices

Regularly monitor for plugin updates and security advisories to stay informed about potential vulnerabilities.

Patching and Updates

Stay vigilant for security patches and updates released by the plugin vendor to ensure the continued security of your WordPress website.