Vitepos – Point of Sale (POS) for WooCommerce <= 3.3.0 - Authenticated (Subscriber+) Arbitrary File Upload to Remote Code Execution

The Vitepos – Point of Sale (POS) for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the insert_media_attachment() function in all versions up to, and including, 3.3.0. This is due to the save_update_category_img() function accepting user-supplied file types without validation when processing category images. This makes it possible for authenticated attackers, with subscriber level access and above, to upload arbitrary files on the affected site's server which makes remote code execution possible.

An attacker needs Subscriber access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Vitepos 3.3.1 closes this, and updating the plugin is the step that ends it.

• Firewall
• Scanner
• Alerts