File Manager Pro – Filester <= 1.8.8 - Authenticated (Administrator+) Arbitrary File Upload

The File Manager Pro – Filester plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 1.8.8. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. Administrators have the ability to extend file manager usage privileges to lower-level users including subscribers, which would make this vulnerability more severe on such sites.

An attacker needs Administrator 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: File Manager Pro 1.8.9 closes this, and updating the plugin is the step that ends it.

• Firewall
• Scanner
• Alerts