SuSE Security Advisory - dhclient below version 2.0 contains a remote root vulnerability because dhclient does not do quoting of server messages before passing them to /sbin/dhclient-script. Dhclient could be tricked by a rogue DHCP server to execute commands as user root.
5c0ca149e1c91461b1be9085c16c3c08f82278eece473c6d97b23dc05060c7f1