Check Point Advisories

DHCP (CAN-2004-0899; CAN-2004-0900)

Vulnerability
Protection

Check Point Reference:	CPAI-2005-07
Date Published:	1 Feb 2005
Severity:	High
Last Updated:	Saturday 01 January, 2000
Source:
Industry Reference:	CAN-2004-0899 CAN-2004-0900
Protection Provided by:	Security Gateway R71, R70
Who is Vulnerable?
Vulnerability Description	DHCP (Dynamic Host Configuration Protocol) is used to administrate IP address configuration. Clients request an IP address from a server that leases them addresses. Attacks on the DHCP protocol usually target a vulnerability in the server software used, by sending specially crafted DHCP packets.

Protection Overview

In order for the protection to be activated, update your Security Gateway product to the latest IPS update.For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R70 / R71

In the IPS tab, click Protections and find the DHCP protection using the Search tool and Edit the protection's settings.
Install policy on all modules.

This protection's log will contain the following information: