(RHSA-2010:0923) Moderate: dhcp security update

2010-11-3000:00:00

access.redhat.com

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.061 Low

EPSS

Percentile

92.7%

JSON

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 NULL pointer dereference flaw was discovered in the way the dhcpd daemon
parsed DHCPv6 packets. A remote attacker could use this flaw to crash dhcpd
via a specially-crafted DHCPv6 packet, if dhcpd was running as a DHCPv6
server. (CVE-2010-3611)

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.

OSVersionArchitecturePackageVersionFilename
RedHat6s390xdhclient< 4.1.1-12.P1.el6_0.1dhclient-4.1.1-12.P1.el6_0.1.s390x.rpm
RedHat6s390xdhcp< 4.1.1-12.P1.el6_0.1dhcp-4.1.1-12.P1.el6_0.1.s390x.rpm
RedHat6ppcdhcp-devel< 4.1.1-12.P1.el6_0.1dhcp-devel-4.1.1-12.P1.el6_0.1.ppc.rpm
RedHat6x86_64dhcp-devel< 4.1.1-12.P1.el6_0.1dhcp-devel-4.1.1-12.P1.el6_0.1.x86_64.rpm
RedHat6ppc64dhcp-devel< 4.1.1-12.P1.el6_0.1dhcp-devel-4.1.1-12.P1.el6_0.1.ppc64.rpm
RedHat6i686dhclient< 4.1.1-12.P1.el6_0.1dhclient-4.1.1-12.P1.el6_0.1.i686.rpm
RedHat6s390dhcp-debuginfo< 4.1.1-12.P1.el6_0.1dhcp-debuginfo-4.1.1-12.P1.el6_0.1.s390.rpm
RedHat6x86_64dhclient< 4.1.1-12.P1.el6_0.1dhclient-4.1.1-12.P1.el6_0.1.x86_64.rpm
RedHat6x86_64dhcp< 4.1.1-12.P1.el6_0.1dhcp-4.1.1-12.P1.el6_0.1.x86_64.rpm
RedHat6i686dhcp< 4.1.1-12.P1.el6_0.1dhcp-4.1.1-12.P1.el6_0.1.i686.rpm

OS	Version	Architecture	Package	Version	Filename
RedHat	6	s390x	dhclient	< 4.1.1-12.P1.el6_0.1	dhclient-4.1.1-12.P1.el6_0.1.s390x.rpm
RedHat	6	s390x	dhcp	< 4.1.1-12.P1.el6_0.1	dhcp-4.1.1-12.P1.el6_0.1.s390x.rpm
RedHat	6	ppc	dhcp-devel	< 4.1.1-12.P1.el6_0.1	dhcp-devel-4.1.1-12.P1.el6_0.1.ppc.rpm
RedHat	6	x86_64	dhcp-devel	< 4.1.1-12.P1.el6_0.1	dhcp-devel-4.1.1-12.P1.el6_0.1.x86_64.rpm
RedHat	6	ppc64	dhcp-devel	< 4.1.1-12.P1.el6_0.1	dhcp-devel-4.1.1-12.P1.el6_0.1.ppc64.rpm
RedHat	6	i686	dhclient	< 4.1.1-12.P1.el6_0.1	dhclient-4.1.1-12.P1.el6_0.1.i686.rpm
RedHat	6	s390	dhcp-debuginfo	< 4.1.1-12.P1.el6_0.1	dhcp-debuginfo-4.1.1-12.P1.el6_0.1.s390.rpm
RedHat	6	x86_64	dhclient	< 4.1.1-12.P1.el6_0.1	dhclient-4.1.1-12.P1.el6_0.1.x86_64.rpm
RedHat	6	x86_64	dhcp	< 4.1.1-12.P1.el6_0.1	dhcp-4.1.1-12.P1.el6_0.1.x86_64.rpm
RedHat	6	i686	dhcp	< 4.1.1-12.P1.el6_0.1	dhcp-4.1.1-12.P1.el6_0.1.i686.rpm