Migration, Backup, Staging – WPvivid Backup & Migration <= 0.9.120 - Authenticated (Admin+) Arbitrary Directory Creation

The Migration, Backup, Staging – WPvivid Backup & Migration plugin for WordPress is vulnerable to arbitrary directory creation in all versions up to, and including, 0.9.120. This is due to the check_filesystem_permissions() function not properly restricting the directories that can be created, or in what location. This makes it possible for authenticated attackers, with Administrator-level access and above, to create arbitrary directories.

An attacker needs Admin 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: WPvivid 0.9.121 closes this, and updating the plugin is the step that ends it.

• Firewall
• Scanner
• Alerts