CVE-2022-0214 : Exploit Details and Defense Strategies

The Custom Popup Builder WordPress plugin before version 1.3.1 is vulnerable to an unauthenticated denial of service attack due to improper validation of input data. This CVE was discovered by Felipe de Avila and coordinated by WPScan.

Understanding CVE-2022-0214

This CVE, titled "Popup | Custom Popup Builder < 1.3.1 - Unauthenticated Denial of Service", highlights a security vulnerability in the Custom Popup Builder WordPress plugin.

What is CVE-2022-0214?

The vulnerability in CVE-2022-0214 arises from the plugin's practice of autoloading data from its popup on all pages without proper validation. An unauthenticated user can exploit this by sending data of excessive length, leading to a denial of service on the affected blog.

The Impact of CVE-2022-0214

This vulnerability can result in a denial of service, disrupting the normal functioning of the WordPress site that utilizes the Custom Popup Builder plugin.

Technical Details of CVE-2022-0214

The following technical details shed light on the nature of the vulnerability.

Vulnerability Description

The vulnerability is characterized by the lack of proper validation of input data length, allowing unauthenticated users to trigger a denial of service attack.

Affected Systems and Versions

The affected system includes the Custom Popup Builder WordPress plugin version 1.3.1 and below, with the issue not present in version 1.3.1.

Exploitation Mechanism

By sending data of excessive length to the plugin, unauthenticated users can exploit the lack of input validation, causing a denial of service on the WordPress site.

Mitigation and Prevention

To safeguard your WordPress site from CVE-2022-0214, take immediate steps to address the vulnerability and implement long-term security practices.

Immediate Steps to Take

Update the Custom Popup Builder plugin to version 1.3.1 or newer to mitigate the vulnerability.
Monitor your site for any unusual behavior that could indicate a denial of service attack.

Long-Term Security Practices

Regularly update plugins and themes on your WordPress site to patch security vulnerabilities timely.
Implement strict input validation practices to prevent similar denial of service attacks in the future.

Patching and Updates

Ensure timely installation of security patches and updates released by plugin developers to stay protected against known vulnerabilities.