CVE-2021-39351 Explained : Impact and Mitigation

This CVE-2021-39351 article provides detailed information about an authenticated SQL injection vulnerability in the WP Bannerize WordPress plugin.

Understanding CVE-2021-39351

This section offers insights into the nature of the vulnerability and its implications.

What is CVE-2021-39351?

The WP Bannerize WordPress plugin is susceptible to an authenticated SQL injection attack through the id parameter in the ~/Classes/wpBannerizeAdmin.php file. This flaw enables threat actors to extract sensitive data from compromised websites. The affected versions range from 2.0.0 to 4.0.2.

The Impact of CVE-2021-39351

The vulnerability allows attackers to perform authenticated SQL injection, potentially leading to unauthorized access to sensitive information within the affected websites.

Technical Details of CVE-2021-39351

This section delves into the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

An authenticated SQL injection vulnerability exists in the WP Bannerize WordPress plugin due to insufficient sanitization of user-supplied data in the id parameter within the wpBannerizeAdmin.php file.

Affected Systems and Versions

The vulnerability impacts versions 2.0.0 to 4.0.2 of the WP Bannerize plugin.

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting malicious SQL queries via the id parameter, potentially gaining unauthorized access to sensitive data stored in the database.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent exploitation of the CVE-2021-39351 vulnerability.

Immediate Steps to Take

Uninstall the WP Bannerize plugin from affected websites to eliminate the risk of exploitation.

Long-Term Security Practices

Regularly update plugins and software to address security vulnerabilities.
Implement strict input validation mechanisms to prevent SQL injection attacks.

Patching and Updates

Ensure to update the WP Bannerize plugin to the latest secure version to patch the authenticated SQL injection vulnerability.