Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Mestres do WP Checkout Mestres WP.This issue affects Checkout Mestres WP: from n/a through 7.1.9.6.
Critical vulnerability exists in the Mestres do WP Checkout plugin, allowing for SQL injection (SQLi) attacks. Successful exploitation could lead to unauthorized access, data breaches, and complete system compromise by attackers. This vulnerability impacts all versions of the plugin up to and including 7.1.9.6.
Step 1: Identify Injection Point: The attacker identifies a vulnerable parameter within the Checkout Mestres WP plugin, likely related to user input, such as order details, customer information, or search fields.
Step 2: Craft Malicious Payload: The attacker crafts a malicious SQL injection payload designed to achieve a specific goal, such as retrieving sensitive data (e.g., usernames, passwords, credit card details), modifying data (e.g., changing order statuses), or executing arbitrary commands.
Step 3: Inject Payload: The attacker submits the crafted payload through the identified vulnerable parameter, typically via a web form or API request.
Step 4: Query Execution: The plugin's code incorporates the attacker's input directly into an SQL query without proper sanitization.
Step 5: SQL Server Interpretation: The SQL server interprets the injected payload as part of the query, executing the attacker's malicious SQL commands.
Step 6: Data Exfiltration/System Compromise: The attacker's commands are executed, potentially leading to data exfiltration, unauthorized access, or complete system compromise, depending on the payload's design.
The vulnerability stems from improper input validation and sanitization of user-supplied data within the plugin's code. Specifically, the plugin likely constructs SQL queries using user-provided input without properly escaping or filtering special characters. This allows an attacker to inject malicious SQL code into the query, altering its intended function and potentially allowing them to retrieve sensitive data, modify database contents, or execute arbitrary commands on the server. The root cause is a failure to implement parameterized queries or to adequately sanitize user inputs before incorporating them into SQL statements. This lack of proper input validation allows for the injection of malicious SQL commands, leading to unauthorized data access and potential system compromise.