CVE-2021-39314 : Exploit Details and Defense Strategies

A WordPress plugin, WooCommerce EnvioPack, is susceptible to Reflected Cross-Site Scripting, allowing attackers to insert malicious scripts via the dataid parameter.

Understanding CVE-2021-39314

WooCommerce EnvioPack version 1.2 and earlier are affected by a Reflected Cross-Site Scripting vulnerability.

What is CVE-2021-39314?

The vulnerability in WooCommerce EnvioPack allows malicious actors to execute arbitrary web scripts by injecting them through the dataid parameter.

The Impact of CVE-2021-39314

The vulnerability has a CVSS v3.1 base score of 6.1, categorizing it as a medium severity issue with low confidentiality and integrity impact and no availability impact.

Technical Details of CVE-2021-39314

The technical details of the CVE-2021-39314 vulnerability are as follows:

Vulnerability Description

The vulnerability lies in the dataid parameter in the ~/includes/functions.php file of WooCommerce EnvioPack versions up to and including 1.2, facilitating Reflected Cross-Site Scripting.

Affected Systems and Versions

Product: WooCommerce EnvioPack
Vendor: WooCommerce EnvioPack
Versions Affected: <= 1.2

Exploitation Mechanism

The vulnerability can be exploited via a network attack, with low complexity and no privileges required, necessitating user interaction.

Mitigation and Prevention

It's crucial to take immediate steps to mitigate the CVE-2021-39314 vulnerability and implement long-term security practices:

Immediate Steps to Take

Uninstall the WooCommerce EnvioPack plugin from the WordPress site to eliminate the vulnerability.

Long-Term Security Practices

Regularly update plugins to ensure the latest security patches.
Monitor security advisories from plugin vendors and security platforms.
Conduct security assessments to identify and address potential vulnerabilities promptly.