dhcp-4.1.1-34.P1.AXS4

DHCP (Dynamic Host Configuration Protocol) is a protocol which allows individual devices on an IP network to get their own network configuration information (IP address, subnetmask, broadcast address, etc.) from a DHCP server. The overall purpose of DHCP is to make it easier to administer a large network. The dhcp package includes the ISC DHCP service and relay agent.

To use DHCP on your network, install a DHCP service (or relay agent), and on clients run a DHCP client daemon. The dhcp package provides the ISC DHCP service and relay agent.

Security issues fixed with this release:

• CVE-2012-3955
ISC DHCP 4.1.x before 4.1-ESV-R7 and 4.2.x before 4.2.4-P2 allows remote attackers to cause a denial of service (daemon crash) in opportunistic circumstances by establishing an IPv6 lease in an environment where the lease expiration time is later reduced.

Fixed bugs:

• Previously, on networks interfaces configured with more that one IP address, the DHCP server only discovered the first one and would fail to restart if the server only served a subnet of the remaining IP addresses. This has been fixed.

• Previously, despite having been stopped, the dhclient rewrote the /etc/resolv.conf file with backup data even if the PEERDNS flag was set to "no" before shut down if the configuration file was changed while the dhclient ran with PEERDNS=yes. This has been fixed, the dhclient no longer rewrites the /etc/resolv.conf file when stopped. (BZ#824622)