Scientific Linux: CVE-2011-2748 Moderate: DHCP Denial Of Service

Date: Tue, 16 Aug 2011 10:31:26 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: dhcp on SL4.x, SL5.x, SL6.x i386/x86_64
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Synopsis: Moderate: dhcp security update
Issue Date: 2011-08-15
CVE Numbers: CVE-2011-2748

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.

Two denial of service flaws were found in the way the dhcpd daemon
handled certain incomplete request packets. A remote attacker could use
these flaws to crash dhcpd via a specially-crafted request.
(CVE-2011-2748, CVE-2011-2749)

Users of DHCP should upgrade to these updated packages, which contain a
backported patch to correct these issues. After installing this update,
all DHCP servers will be restarted automatically.

SL4:
 i386
 dhclient-3.0.1-68.el4.i386.rpm
 dhcp-3.0.1-68.el4.i386.rpm
 dhcp-devel-3.0.1-68.el4.i386.rpm
 x86_64
 dhclient-3.0.1-68.el4.x86_64.rpm
 dhcp-3.0.1-68.el4.x86_64.rpm
 dhcp-devel-3.0.1-68.el4.x86_64.rpm
SL5:
 i386
 dhclient-3.0.5-29.el5_7.1.i386.rpm
 dhcp-3.0.5-29.el5_7.1.i386.rpm
 dhcp-devel-3.0.5-29.el5_7.1.i386.rpm
 libdhcp4client-3.0.5-29.el5_7.1.i386.rpm
 libdhcp4client-devel-3.0.5-29.el5_7.1.i386.rpm
 x86_64
 dhclient-3.0.5-29.el5_7.1.x86_64.rpm
 dhcp-3.0.5-29.el5_7.1.x86_64.rpm
 dhcp-devel-3.0.5-29.el5_7.1.i386.rpm
 dhcp-devel-3.0.5-29.el5_7.1.x86_64.rpm
 libdhcp4client-3.0.5-29.el5_7.1.i386.rpm
 libdhcp4client-3.0.5-29.el5_7.1.x86_64.rpm
 libdhcp4client-devel-3.0.5-29.el5_7.1.i386.rpm
 libdhcp4client-devel-3.0.5-29.el5_7.1.x86_64.rpm
SL6:
 i386
 dhclient-4.1.1-19.P1.el6_1.1.i686.rpm
 dhcp-4.1.1-19.P1.el6_1.1.i686.rpm
 dhcp-devel-4.1.1-19.P1.el6_1.1.i686.rpm
 x86_64
 dhclient-4.1.1-19.P1.el6_1.1.x86_64.rpm
 dhcp-4.1.1-19.P1.el6_1.1.x86_64.rpm
 dhcp-devel-4.1.1-19.P1.el6_1.1.i686.rpm
 dhcp-devel-4.1.1-19.P1.el6_1.1.x86_64.rpm

- Scientific Linux Development Team