Poultry Farm Management System (PFMS) v1. is a purpose-built software designed to help poultry farmers manage their farm operations efficiently and effectively. However, it has come to light that this software suffers from an SQL injection vulnerability (CVE-2022-44399) that could potentially allow attackers to manipulate and compromise the farm data stored in its databases. This vulnerability is particularly concerning due to the sensitive nature of farm data, which often includes financial, operational, and production details.

This post will provide a detailed analysis of this SQL injection vulnerability, provide code snippets to demonstrate the vulnerability, and offer a link to the original advisory for further references.

Vulnerability Details

The vulnerability exists within the "category.php" file, which is responsible for handling farm categories. The "del" parameter, which is used to delete specific categories, is not properly sanitized and filtered for potentially malicious input. A skilled attacker can exploit this vulnerability by crafting a malicious SQL query that executes unauthorized database commands and consequently compromises the database and potentially the entire farm management system.

Payload Example

http://example.com/Redcock-Farm/farm/category.php?del=1' OR '1'='1

As seen in the example above, an attacker appends a common SQL injection technique (i.e., ' OR '1'='1) to the "del" parameter to manipulate the query, potentially granting them unauthorized access to the database. This could lead to various risks, including unauthorized data access, data modification, or even complete system compromise.

Original Source Reference

For more details on this vulnerability and the reference to the original advisory, please follow this link: https://www.example.com/vulnerability-advisory/CVE-2022-44399

Exploit Demonstration Code Snippet

Here's a code snippet demonstrating how the "category.php" file does not properly sanitize user input before executing the SQL query. The vulnerable line is marked with a comment for clarity:

<?php
// ...
$id=intval($_GET['del']);
$sql = "DELETE FROM category WHERE cat_id='$id'";
//  The SQL query above does not properly sanitize the $id variable containing the user input from the "del" parameter.
$result = mysqli_query($con,$sql);
// ...
?>

Possible Solution

To mitigate this vulnerability, the developer should implement proper input validation and sanitize user inputs before using them in SQL queries. Using prepared statements and parameterized queries is a more effective way to guard against SQL injection attacks.

Here's a more secure code snippet using prepared statements

<?php
// ...
$id=intval($_GET['del']);

$stmt = $con->prepare("DELETE FROM category WHERE cat_id=?");
$stmt->bind_param("i", $id);
$stmt->execute();

$result = $stmt->get_result();
// ...
?>

Conclusion

CVE-2022-44399 is a critical SQL injection vulnerability affecting Poultry Farm Management System v1.. If left unpatched, this vulnerability could have severe consequences for farm owners utilizing the system. The developer should address this issue promptly, and users should implement the recommended mitigations to safeguard their sensitive farm data.

Timeline

Published on: 11/28/2022 16:15:00 UTC
Last modified on: 12/01/2022 22:53:00 UTC