The remote host is missing an update to the system as announced in the referenced advisory.
The following package is affected: sudo
CVE-2011-0010 check.c in sudo 1.7.x before 1.7.4p5, when a Runas group is configured, does not require a password for command execution that involves a gid change but no uid change, which allows local users to bypass an intended authentication requirement via the -g option to a sudo command.
Solution: Update your system with the appropriate patches or software upgrades.