The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://www.sudo.ws/sudo/alerts/netmask.html http://www.vuxml.org/freebsd/b3435b68-9ee8-11e1-997c-002354ed89bc.html

The following package is affected: sudo CVE-2012-2337 sudo 1.6.x and 1.7.x before 1.7.9p1, and 1.8.x before 1.8.4p5, does not properly support configurations that use a netmask syntax, which allows local users to bypass intended command restrictions in opportunistic circumstances by executing a command on a host that has an IPv4 address.