RedHat Update for dhcp RHSA-2011:0256-01

Solution
Please Install the Updated Packages.
Insight
The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. DHCPv6 is the DHCP protocol version for IPv6 networks. A flaw was found in the way the dhcpd daemon processed certain DHCPv6 messages for addresses that had previously been declined and marked as abandoned internally. If a remote attacker sent such messages to dhcpd, it could cause dhcpd to crash due to an assertion failure if it was running as a DHCPv6 server. (CVE-2011-0413) Red Hat would like to thank Internet Systems Consortium for reporting this issue. Users running dhcpd as a DHCPv6 server should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing this update, all DHCP servers will be restarted automatically.
Affected
dhcp on Red Hat Enterprise Linux Desktop (v. 6), Red Hat Enterprise Linux Server (v. 6), Red Hat Enterprise Linux Workstation (v. 6)
References