Campcodes Sales and Inventory System SQL Injection Vulnerability in Sales Addition Page

A critical SQL injection vulnerability has been identified in Campcodes Sales and Inventory System version 1.0. The issue resides in the '/pages/sales_add.php' file, where the 'discount' parameter is manipulated to inject malicious SQL queries. This vulnerability can be exploited remotely, allowing attackers to gain unauthorized access to the database, leak sensitive data, tamper with information, and potentially disrupt services.

Impact

Exploitation of this vulnerability allows for unauthorized database access, data manipulation, and leakage of sensitive information. It poses a significant threat to system security and business operations.

Reproduction

The vulnerability can be reproduced by sending a POST request to the '/pages/sales_add.php' file with the 'discount' parameter. Various payloads can be used to exploit the SQL injection, such as boolean-based blind, error-based, and time-based blind SQL injection techniques. The injection takes place by crafting the 'discount' parameter to include malicious SQL code, which is then executed by the database.

Remediation

To address this vulnerability, it is recommended to use prepared statements and parameter binding to prevent SQL injection. Additionally, input validation and filtering should be implemented to ensure user input conforms to expected formats. Minimizing database user permissions and conducting regular security audits can also help enhance overall system security.