RESOLUTION
SYMPTOMS:
After running Plesk security check in the watchdog module I see a message
similar to the following: "Your system contains some unknown version
numbers. Please run Rootkit Hunter with the --update parameter or fill in the contact form (www.rootkit.nl)"
CAUSE:
Rootkit Hunter found new packages versions which are not listed in it's database.
RESOLUTION:
Rootkit Hunter usually updates the database automatically. You can force update with following command:
$PRODUCT_ROOT_D/admin/sbin/modules/watchdog/rkhunter --configfile $PRODUCT_ROOT_D/etc/modules/watchdog/rkhunter.conf --update