CVE-2021-39308 : Security Advisory and Response

This CVE-2021-39308 article provides insights into a vulnerability in WooCommerce myghpay Payment Gateway plugin.

Understanding CVE-2021-39308

CVE-2021-39308 relates to a Reflected Cross-Site Scripting vulnerability in the WooCommerce myghpay Payment Gateway WordPress plugin.

What is CVE-2021-39308?

The WooCommerce myghpay Payment Gateway plugin is susceptible to Reflected Cross-Site Scripting through the clientref parameter in the ~/processresponse.php file, enabling attackers to insert malicious web scripts.

The Impact of CVE-2021-39308

The vulnerability has an attack complexity of LOW, impacting integrity and confidentiality at a medium severity level with a CVSS base score of 6.1.

Technical Details of CVE-2021-39308

This section delves into the specifics of the CVE-2021-39308 vulnerability.

Vulnerability Description

The vulnerability allows attackers to perform Reflected Cross-Site Scripting attacks through the clientref parameter in the ~/processresponse.php file.

Affected Systems and Versions

Product: WooCommerce myghpay Payment Gateway
Vendor: WooCommerce myghpay Payment Gateway
Versions Affected: <= 3.0

Exploitation Mechanism

Attackers exploit the clientref parameter in the processresponse.php file to inject arbitrary web scripts.

Mitigation and Prevention

Employ necessary measures to mitigate the risks associated with CVE-2021-39308.

Immediate Steps to Take

Uninstall the vulnerable WooCommerce myghpay Payment Gateway plugin.

Long-Term Security Practices

Regularly update plugins and themes to ensure security.
Implement web application firewalls to prevent XSS attacks.

Patching and Updates

Stay informed about security patches and updates for WordPress plugins and regularly apply them to safeguard against vulnerabilities.