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. https://www.isc.org/node/468 http://secunia.com/advisories/35785 http://www.kb.cert.org/vuls/id/410676 http://www.vuxml.org/freebsd/c444c8b7-7169-11de-9ab7-000c29a67389.html

The following packages are affected: isc-dhcp31-client isc-dhcp30-client CVE-2009-0692 Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.