The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-09:17.freebsd.asc
Upgrade your system to the appropriate stable release or security branch dated after the correction date https://secure1.securityspace.com/smysecure/catid.html?in=FreeBSD-SA-09:17.freebsd.asc
The freebsd-update(8) utility is used to fetch, install, and rollback updates to the FreeBSD base system, and also to upgrade from one FreeBSD release to another. When downloading updates to FreeBSD via 'freebsd-update fetch' or 'freebsd-update upgrade', the freebsd-update(8) utility copies currently installed files into its working directory (/var/db/freebsd-update by default) both for the purpose of merging changes to configuration files and in order to be able to roll back installed updates. The default working directory used by freebsd-update(8) is normally created during the installation of FreeBSD with permissions which allow all local users to see its contents, and freebsd-update(8) does not take any steps to restrict access to files stored in said directory.