CVE-2021-24224 : Exploit Details and Defense Strategies

Easy Form Builder WordPress plugin version 1.0 allows authenticated users to upload arbitrary files via the EFBP_verify_upload_file AJAX action, leading to Remote Code Execution (RCE).

Understanding CVE-2021-24224

This CVE concerns an arbitrary file upload vulnerability in the Easy Form Builder plugin for WordPress.

What is CVE-2021-24224?

The vulnerability in Easy Form Builder WordPress plugin version 1.0 enables authenticated low-privilege users to upload malicious files, resulting in RCE.

The Impact of CVE-2021-24224

Exploiting this flaw can lead to unauthorized remote code execution on the affected WordPress website, potentially compromising data and system integrity.

Technical Details of CVE-2021-24224

This section provides more insights into the vulnerability.

Vulnerability Description

The issue occurs due to the lack of adequate security checks in the EFBP_verify_upload_file AJAX action, allowing attackers to upload and execute arbitrary files.

Affected Systems and Versions

Easy Form Builder version 1.0 is affected by this vulnerability, exposing WordPress websites to exploitation if not promptly addressed.

Exploitation Mechanism

By taking advantage of the absence of file verification mechanisms, attackers can abuse the plugin's functionality to upload malicious files and execute arbitrary commands.

Mitigation and Prevention

To safeguard your WordPress website, consider the following measures.

Immediate Steps to Take

Disable the Easy Form Builder plugin if not essential until a patch is available.
Monitor for any suspicious activities on your website.

Long-Term Security Practices

Regularly update WordPress plugins and themes to mitigate known vulnerabilities.
Implement proper access controls and user permissions to limit potential attack surfaces.

Patching and Updates

Keep abreast of security updates for Easy Form Builder plugin and apply patches promptly to address this vulnerability.