Synopsis: Important: dhcp security update
Issue Date: 2011-04-08
CVE Numbers: CVE-2011-0997
—
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.
It was discovered that the DHCP client daemon, dhclient, did not
sufficiently sanitize certain options provided in DHCP server replies, such
as the client hostname. A malicious DHCP server could send such an option
with a specially-crafted value to a DHCP client. If this option’s value was
saved on the client system, and then later insecurely evaluated by a
process that assumes the option is trusted, it could lead to arbitrary code
execution with the privileges of that process. (CVE-2011-0997)
Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for
reporting this issue.
All dhclient users should upgrade to these updated packages, which contain
a backported patch to correct this issue.
—
SL4
x86_64
dhclient-3.0.1-67.el4.x86_64.rpm
dhcp-3.0.1-67.el4.x86_64.rpm
dhcp-devel-3.0.1-67.el4.x86_64.rpm
i386
dhclient-3.0.1-67.el4.i386.rpm
dhcp-3.0.1-67.el4.i386.rpm
dhcp-devel-3.0.1-67.el4.i386.rpm
SL5
x86_64
dhclient-3.0.5-23.el5_6.4.x86_64.rpm
dhcp-3.0.5-23.el5_6.4.x86_64.rpm
dhcp-devel-3.0.5-23.el5_6.4.i386.rpm
dhcp-devel-3.0.5-23.el5_6.4.x86_64.rpm
libdhcp4client-3.0.5-23.el5_6.4.i386.rpm
libdhcp4client-3.0.5-23.el5_6.4.x86_64.rpm
libdhcp4client-devel-3.0.5-23.el5_6.4.i386.rpm
libdhcp4client-devel-3.0.5-23.el5_6.4.x86_64.rpm
i386
dhclient-3.0.5-23.el5_6.4.i386.rpm
dhcp-3.0.5-23.el5_6.4.i386.rpm
dhcp-devel-3.0.5-23.el5_6.4.i386.rpm
libdhcp4client-3.0.5-23.el5_6.4.i386.rpm
libdhcp4client-devel-3.0.5-23.el5_6.4.i386.rpm
SL6
x86_64
dhclient-4.1.1-12.P1.el6_0.4.x86_64.rpm
dhcp-4.1.1-12.P1.el6_0.4.x86_64.rpm
dhcp-devel-4.1.1-12.P1.el6_0.4.i686.rpm
dhcp-devel-4.1.1-12.P1.el6_0.4.x86_64.rpm
i386
dhclient-4.1.1-12.P1.el6_0.4.i686.rpm
dhcp-4.1.1-12.P1.el6_0.4.i686.rpm
dhcp-devel-4.1.1-12.P1.el6_0.4.i686.rpm
– Scientific Linux Development Team
