Mandriva Linux Security Advisory 2009-172 – ISC DHCP Server is vulnerable to a denial of service, caused by the improper handling of DHCP requests. If the host definitions are mixed using dhcp-client-identifier and hardware ethernet, a remote attacker could send specially-crafted DHCP requests to cause the server to stop responding. This update provides fixes for this vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/79755/MDVSA-2009-172.txt
Source: https://packetstormsecurity.com/files/79755/Mandriva-Linux-Security-Advisory-2009-172.html