The remote host is missing an update to the system as announced in the referenced advisory.
The following package is affected: sudo
CVE-2009-0034 parse.c in sudo 1.6.9p17 through 1.6.9p19 does not properly interpret a system group (aka %group) in the sudoers file during authorization decisions for a user who belongs to that group, which allows local users to leverage an applicable sudoers file and gain root privileges via a sudo command.
Solution: Update your system with the appropriate patches or software upgrades.