Post SMTP WordPress Plugin SQL Injection Vulnerability

A SQL injection vulnerability has been identified in the Post SMTP plugin for WordPress, affecting all versions through 3.1.2. The issue arises from inadequate escaping of user-supplied data in the 'columns' parameter, allowing authenticated attackers with Administrator-level access to manipulate SQL queries. This exploitation could lead to unauthorized access to sensitive database information.

Impact

Exploitation of this vulnerability allows for SQL injection, where an attacker can interfere with the application's database queries. This could result in the extraction of sensitive information from the database or potentially modifying database contents.

Reproduction

To reproduce this vulnerability, an authenticated user with Administrator privileges can send a request to the application with a crafted 'columns' parameter. The lack of proper input sanitization will allow the injection of additional SQL commands into the query, exploiting the application's database interaction.

Remediation

Users are advised to update the Post SMTP WordPress plugin to version 3.1.3 or later.