CVE-2022-43232 - SQL Injection Vulnerability in Canteen Management System v1.: Exploit Details, Code Snippets, and Original References

A recent security vulnerability has been discovered in Canteen Management System v1. that allows potential attackers to perform SQL injections via the 'userid' parameter in the '/php_action/fetchOrderData.php' endpoint. This vulnerability, now dubbed CVE-2022-43232, poses a significant security risk as it could potentially allow malicious users to compromise the system's stored data, which may include sensitive user information.

In this blog post, we will discuss the exploit details, show a code snippet demonstrating the issue, and provide links to original references to better understand and address this vulnerability.

Exploit Details

The SQL injection vulnerability occurs in the 'fetchOrderData.php' file, where the attacker can manipulate the 'userid' parameter to perform various SQL injection attacks. This is possible because the application does not properly sanitize the user-supplied input before it's included in an SQL query. As a result, an attacker could potentially execute arbitrary SQL code on the system's backend database, thereby compromising sensitive data and overall system security.

Code Snippet

To better illustrate the vulnerability, let's take a look at a code snippet from the 'fetchOrderData.php' file. Notice how the 'userid' parameter is embedded within the SQL query without any proper input sanitization or validation.

<?php
// fetchOrderData.php

// ...
$userId = $_POST['userid'];
// ...

$sql = "SELECT * FROM orders WHERE user_id = '$userId' AND order_status = 1";
$result = $connect->query($sql);
// ...

This code snippet clearly demonstrates that the 'userid' parameter is directly included within an SQL query without any input sanitization or validation. As a result, an attacker can craft a malicious input containing SQL code to manipulate the query and retrieve sensitive data from the database.

Example exploit payload

POST /php_action/fetchOrderData.php HTTP/1.1
Host: target
Content-Type: application/x-www-form-urlencoded

userid=1' OR '1'='1

By using the exploit payload above, an attacker could potentially retrieve all orders in the system as the SQL query would always evaluate as true, bypassing any intended access restrictions.

Original References

For further information regarding this vulnerability and the Canteen Management System, consider reviewing the following original references:

1. Official CVE-2022-43232 assignment
2. Canteen Management System v1. GitHub repository

Mitigation

To mitigate this vulnerability, it is essential to ensure proper input sanitization and validation for all variables included in SQL queries, especially user-supplied data like the 'userid' parameter. This can be achieved by utilizing prepared statements or parameterized queries, which separates the input values from the actual SQL code and reduces the possibility of SQL injection attacks.

Conclusion

CVE-2022-43232 represents a significant security vulnerability in the Canteen Management System v1. that may potentially allow malicious attackers to compromise system data and impact overall security. As such, it is highly recommended to review and update any affected systems in order to mitigate the vulnerability and minimize potential risks. Always take the necessary steps to ensure proper input sanitization and validation, especially when dealing with user-supplied data.

Timeline

Published on: 10/28/2022 18:15:00 UTC
Last modified on: 10/28/2022 19:48:00 UTC