CVE-2021-24149 : Exploit Details and Defense Strategies

Modern Events Calendar Lite version before 5.16.6 is vulnerable to an authenticated SQL Injection due to unvalidated input. Learn about the impact, technical details, and mitigation steps below.

Understanding CVE-2021-24149

This CVE refers to an authenticated SQL Injection vulnerability in Modern Events Calendar Lite WordPress plugin versions earlier than 5.16.6.

What is CVE-2021-24149?

The vulnerability arises from inadequate sanitization of the mec[post_id] POST parameter in the mec_fes_form AJAX action, potentially allowing attackers to execute malicious SQL queries.

The Impact of CVE-2021-24149

Exploiting this vulnerability could lead to unauthorized access, data manipulation, or even complete data loss on affected websites.

Technical Details of CVE-2021-24149

Here are the key technical aspects of this vulnerability:

Vulnerability Description

The flaw occurs in the Modern Events Calendar Lite plugin versions preceding 5.16.6, enabling authenticated SQL Injection via the mec[post_id] POST parameter.

Affected Systems and Versions

Modern Events Calendar Lite versions prior to 5.16.6 are impacted by this SQL Injection vulnerability.

Exploitation Mechanism

Attackers with author+ privileges can exploit the mec_fes_form AJAX action to perform SQL Injection attacks, compromising the website's database.

Mitigation and Prevention

To protect your system from CVE-2021-24149, follow these security measures:

Immediate Steps to Take

Update Modern Events Calendar Lite to version 5.16.6 or later to eliminate the SQL Injection risk.
Monitor and review website logs for any suspicious activities indicative of a breach.

Long-Term Security Practices

Regularly audit and sanitize user inputs and parameters throughout your WordPress plugins and themes.
Stay informed about security best practices and participate in security training to enhance your awareness.

Patching and Updates

Stay vigilant for security updates and patches released by the Modern Events Calendar Lite plugin developer to address vulnerabilities and enhance website security.