CVE-2021-38319 : Exploit Details and Defense Strategies

A detailed overview of the CVE-2021-38319 vulnerability found in the More From Google WordPress plugin, impacting versions up to and including 0.0.2.

Understanding CVE-2021-38319

This section delves into the specifics of the reflected Cross-Site Scripting vulnerability in the More From Google plugin.

What is CVE-2021-38319?

The More From Google WordPress plugin is susceptible to Reflected Cross-Site Scripting due to a reflected $_SERVER["PHP_SELF"] value in the ~/morefromgoogle.php file, allowing malicious actors to insert arbitrary web scripts.

The Impact of CVE-2021-38319

The vulnerability with a CVSS base score of 6.1 (Medium Severity) can compromise the confidentiality and integrity of affected systems without requiring privileges.

Technical Details of CVE-2021-38319

This section outlines the specific technical aspects of the CVE-2021-38319 vulnerability.

Vulnerability Description

The vulnerability stems from a reflected $_SERVER["PHP_SELF"] value in the More From Google WordPress plugin, enabling attackers to inject arbitrary web scripts.

Affected Systems and Versions

The More From Google plugin versions up to and including 0.0.2 are impacted by this reflected Cross-Site Scripting vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the reflected $_SERVER["PHP_SELF"] value in the ~/morefromgoogle.php file to inject malicious scripts.

Mitigation and Prevention

In this section, you will find strategies to mitigate the risks associated with CVE-2021-38319.

Immediate Steps to Take

To safeguard your WordPress site, uninstall the More From Google plugin immediately to eliminate the vulnerability.

Long-Term Security Practices

Implement robust security measures and avoid using vulnerable plugins to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security patches and updates for WordPress plugins to address known vulnerabilities promptly.