Critical: dhcp security update

Advisory:	RHSA-2009:1136-1
Type:	Security Advisory
Severity:	Critical
Issued on:	2009-07-14
Last updated on:	2009-07-14
Affected Products:	Red Hat Desktop (v. 4) Red Hat Enterprise Linux AS (v. 4) Red Hat Enterprise Linux AS (v. 4.7.z) Red Hat Enterprise Linux AS (v. 4.8.z) Red Hat Enterprise Linux ES (v. 4) Red Hat Enterprise Linux ES (v. 4.7.z) Red Hat Enterprise Linux ES (v. 4.8.z) Red Hat Enterprise Linux WS (v. 4)
OVAL:	com.redhat.rhsa-20091136.xml
CVEs (cve.mitre.org):	CVE-2009-0692

Details

Updated dhcp packages that fix a security issue are now available for Red
Hat Enterprise Linux 4 and 4.7 Extended Update Support.

This update has been rated as having critical security impact by the Red
Hat Security Response Team.

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.

The Mandriva Linux Engineering Team discovered a stack-based buffer
overflow flaw in the ISC DHCP client. If the DHCP client were to receive a
malicious DHCP response, it could crash or execute arbitrary code with the
permissions of the client (root). (CVE-2009-0692)

Users of DHCP should upgrade to these updated packages, which contain a
backported patch to correct this issue.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Updated packages

Red Hat Desktop (v. 4)

SRPMS:
dhcp-3.0.1-65.el4_8.1.src.rpm	`95695bf71f04b832f893572251a603a2`

IA-32:
dhclient-3.0.1-65.el4_8.1.i386.rpm	`88e584cae71d8a01383fd07db0ca7a8e`
dhcp-3.0.1-65.el4_8.1.i386.rpm	`8c128a7bd13781d1ef779118aed76fff`
dhcp-devel-3.0.1-65.el4_8.1.i386.rpm	`1bad8b4e101f780b67b44702775830e2`

x86_64:
dhclient-3.0.1-65.el4_8.1.x86_64.rpm	`908a164936f46ea7f8bf8f0477eceabc`
dhcp-3.0.1-65.el4_8.1.x86_64.rpm	`557704ce9c241fce3434acc99975984c`
dhcp-devel-3.0.1-65.el4_8.1.x86_64.rpm	`e7a425ad71eadbb7de9561ecf40c1608`

Red Hat Enterprise Linux AS (v. 4)

SRPMS:
dhcp-3.0.1-65.el4_8.1.src.rpm	`95695bf71f04b832f893572251a603a2`

IA-32:
dhclient-3.0.1-65.el4_8.1.i386.rpm	`88e584cae71d8a01383fd07db0ca7a8e`
dhcp-3.0.1-65.el4_8.1.i386.rpm	`8c128a7bd13781d1ef779118aed76fff`
dhcp-devel-3.0.1-65.el4_8.1.i386.rpm	`1bad8b4e101f780b67b44702775830e2`

IA-64:
dhclient-3.0.1-65.el4_8.1.ia64.rpm	`eb0cb068c116517f788de30805981733`
dhcp-3.0.1-65.el4_8.1.ia64.rpm	`9e309393fed4433974c34f45328cec90`
dhcp-devel-3.0.1-65.el4_8.1.ia64.rpm	`370b628051752284e32fb1c05c6e8e1b`

PPC:
dhclient-3.0.1-65.el4_8.1.ppc.rpm	`7b5fbcb83453ead314ad548f9172b498`
dhcp-3.0.1-65.el4_8.1.ppc.rpm	`6d771afd11cd6da71da8c83b446a007c`
dhcp-devel-3.0.1-65.el4_8.1.ppc.rpm	`e8b8fb071ffdc4b78b544155b27b989b`

s390:
dhclient-3.0.1-65.el4_8.1.s390.rpm	`f7eade2059f5883a723e62f97e7e53da`
dhcp-3.0.1-65.el4_8.1.s390.rpm	`d080097fa54558c69d06d40198c40de8`
dhcp-devel-3.0.1-65.el4_8.1.s390.rpm	`3731b37581d64308066295fd003b7acf`

s390x:
dhclient-3.0.1-65.el4_8.1.s390x.rpm	`b275401d075fd622bc8603a792c256da`
dhcp-3.0.1-65.el4_8.1.s390x.rpm	`071f1802fea8719433fb58c638ac2d8c`
dhcp-devel-3.0.1-65.el4_8.1.s390x.rpm	`c3336fe33b4f19bb3da359f45f74ce45`

x86_64:
dhclient-3.0.1-65.el4_8.1.x86_64.rpm	`908a164936f46ea7f8bf8f0477eceabc`
dhcp-3.0.1-65.el4_8.1.x86_64.rpm	`557704ce9c241fce3434acc99975984c`
dhcp-devel-3.0.1-65.el4_8.1.x86_64.rpm	`e7a425ad71eadbb7de9561ecf40c1608`

Red Hat Enterprise Linux AS (v. 4.7.z)

SRPMS:
dhcp-3.0.1-62.el4_7.1.src.rpm	`808d397cf12dc2c89acb57a844b8bb24`

IA-32:
dhclient-3.0.1-62.el4_7.1.i386.rpm	`947e2276ad40dce9211ce04795446357`
dhcp-3.0.1-62.el4_7.1.i386.rpm	`cb60ed47e7b7e71faa6a62eb9e2f0266`
dhcp-devel-3.0.1-62.el4_7.1.i386.rpm	`a9711c7197a62b54df3815f90130e6ca`

IA-64:
dhclient-3.0.1-62.el4_7.1.ia64.rpm	`0e09988b29b40837e954421b3de06dbe`
dhcp-3.0.1-62.el4_7.1.ia64.rpm	`1287aa95752f2fdab40583d6b4588d2b`
dhcp-devel-3.0.1-62.el4_7.1.ia64.rpm	`bb49a522a4d8d8f5fc3d018d6596876d`

PPC:
dhclient-3.0.1-62.el4_7.1.ppc.rpm	`0b97c986debd3408ebe137a26b836e4e`
dhcp-3.0.1-62.el4_7.1.ppc.rpm	`3c8ae331a8f38ede5ffb8d685b0ec2b7`
dhcp-devel-3.0.1-62.el4_7.1.ppc.rpm	`3b1b7f6899d4df151aa580e8f276eab2`

s390:
dhclient-3.0.1-62.el4_7.1.s390.rpm	`4eafd7f3eaa9131ba0471e0d85c4e319`
dhcp-3.0.1-62.el4_7.1.s390.rpm	`bd1d6b8d4526a3ecb2252d91b1aa4073`
dhcp-devel-3.0.1-62.el4_7.1.s390.rpm	`d27770c588c3549d277a588ee2b8ba22`

s390x:
dhclient-3.0.1-62.el4_7.1.s390x.rpm	`be3e4c67029255238c2678cf2bbd37c1`
dhcp-3.0.1-62.el4_7.1.s390x.rpm	`fa6f86326e2b355012f5dc8c37d50948`
dhcp-devel-3.0.1-62.el4_7.1.s390x.rpm	`a3c887e9c0df757d61dec067e6748514`

x86_64:
dhclient-3.0.1-62.el4_7.1.x86_64.rpm	`00f95be42a81bbdad7231712a892fe7f`
dhcp-3.0.1-62.el4_7.1.x86_64.rpm	`59f8e715a188e6283c61ffb7bb4e744f`
dhcp-devel-3.0.1-62.el4_7.1.x86_64.rpm	`edb5259fc7583742d71f56f5ffd056fb`

Red Hat Enterprise Linux AS (v. 4.8.z)

SRPMS:
dhcp-3.0.1-65.el4_8.1.src.rpm	`95695bf71f04b832f893572251a603a2`

IA-32:
dhclient-3.0.1-65.el4_8.1.i386.rpm	`88e584cae71d8a01383fd07db0ca7a8e`
dhcp-3.0.1-65.el4_8.1.i386.rpm	`8c128a7bd13781d1ef779118aed76fff`
dhcp-devel-3.0.1-65.el4_8.1.i386.rpm	`1bad8b4e101f780b67b44702775830e2`

IA-64:
dhclient-3.0.1-65.el4_8.1.ia64.rpm	`eb0cb068c116517f788de30805981733`
dhcp-3.0.1-65.el4_8.1.ia64.rpm	`9e309393fed4433974c34f45328cec90`
dhcp-devel-3.0.1-65.el4_8.1.ia64.rpm	`370b628051752284e32fb1c05c6e8e1b`

PPC:
dhclient-3.0.1-65.el4_8.1.ppc.rpm	`7b5fbcb83453ead314ad548f9172b498`
dhcp-3.0.1-65.el4_8.1.ppc.rpm	`6d771afd11cd6da71da8c83b446a007c`
dhcp-devel-3.0.1-65.el4_8.1.ppc.rpm	`e8b8fb071ffdc4b78b544155b27b989b`

s390:
dhclient-3.0.1-65.el4_8.1.s390.rpm	`f7eade2059f5883a723e62f97e7e53da`
dhcp-3.0.1-65.el4_8.1.s390.rpm	`d080097fa54558c69d06d40198c40de8`
dhcp-devel-3.0.1-65.el4_8.1.s390.rpm	`3731b37581d64308066295fd003b7acf`

s390x:
dhclient-3.0.1-65.el4_8.1.s390x.rpm	`b275401d075fd622bc8603a792c256da`
dhcp-3.0.1-65.el4_8.1.s390x.rpm	`071f1802fea8719433fb58c638ac2d8c`
dhcp-devel-3.0.1-65.el4_8.1.s390x.rpm	`c3336fe33b4f19bb3da359f45f74ce45`

x86_64:
dhclient-3.0.1-65.el4_8.1.x86_64.rpm	`908a164936f46ea7f8bf8f0477eceabc`
dhcp-3.0.1-65.el4_8.1.x86_64.rpm	`557704ce9c241fce3434acc99975984c`
dhcp-devel-3.0.1-65.el4_8.1.x86_64.rpm	`e7a425ad71eadbb7de9561ecf40c1608`

Red Hat Enterprise Linux ES (v. 4)

SRPMS:
dhcp-3.0.1-65.el4_8.1.src.rpm	`95695bf71f04b832f893572251a603a2`

IA-32:
dhclient-3.0.1-65.el4_8.1.i386.rpm	`88e584cae71d8a01383fd07db0ca7a8e`
dhcp-3.0.1-65.el4_8.1.i386.rpm	`8c128a7bd13781d1ef779118aed76fff`
dhcp-devel-3.0.1-65.el4_8.1.i386.rpm	`1bad8b4e101f780b67b44702775830e2`

IA-64:
dhclient-3.0.1-65.el4_8.1.ia64.rpm	`eb0cb068c116517f788de30805981733`
dhcp-3.0.1-65.el4_8.1.ia64.rpm	`9e309393fed4433974c34f45328cec90`
dhcp-devel-3.0.1-65.el4_8.1.ia64.rpm	`370b628051752284e32fb1c05c6e8e1b`

x86_64:
dhclient-3.0.1-65.el4_8.1.x86_64.rpm	`908a164936f46ea7f8bf8f0477eceabc`
dhcp-3.0.1-65.el4_8.1.x86_64.rpm	`557704ce9c241fce3434acc99975984c`
dhcp-devel-3.0.1-65.el4_8.1.x86_64.rpm	`e7a425ad71eadbb7de9561ecf40c1608`

Red Hat Enterprise Linux ES (v. 4.7.z)

SRPMS:
dhcp-3.0.1-62.el4_7.1.src.rpm	`808d397cf12dc2c89acb57a844b8bb24`

IA-32:
dhclient-3.0.1-62.el4_7.1.i386.rpm	`947e2276ad40dce9211ce04795446357`
dhcp-3.0.1-62.el4_7.1.i386.rpm	`cb60ed47e7b7e71faa6a62eb9e2f0266`
dhcp-devel-3.0.1-62.el4_7.1.i386.rpm	`a9711c7197a62b54df3815f90130e6ca`

IA-64:
dhclient-3.0.1-62.el4_7.1.ia64.rpm	`0e09988b29b40837e954421b3de06dbe`
dhcp-3.0.1-62.el4_7.1.ia64.rpm	`1287aa95752f2fdab40583d6b4588d2b`
dhcp-devel-3.0.1-62.el4_7.1.ia64.rpm	`bb49a522a4d8d8f5fc3d018d6596876d`

x86_64:
dhclient-3.0.1-62.el4_7.1.x86_64.rpm	`00f95be42a81bbdad7231712a892fe7f`
dhcp-3.0.1-62.el4_7.1.x86_64.rpm	`59f8e715a188e6283c61ffb7bb4e744f`
dhcp-devel-3.0.1-62.el4_7.1.x86_64.rpm	`edb5259fc7583742d71f56f5ffd056fb`

Red Hat Enterprise Linux ES (v. 4.8.z)

SRPMS:
dhcp-3.0.1-65.el4_8.1.src.rpm	`95695bf71f04b832f893572251a603a2`

IA-32:
dhclient-3.0.1-65.el4_8.1.i386.rpm	`88e584cae71d8a01383fd07db0ca7a8e`
dhcp-3.0.1-65.el4_8.1.i386.rpm	`8c128a7bd13781d1ef779118aed76fff`
dhcp-devel-3.0.1-65.el4_8.1.i386.rpm	`1bad8b4e101f780b67b44702775830e2`

IA-64:
dhclient-3.0.1-65.el4_8.1.ia64.rpm	`eb0cb068c116517f788de30805981733`
dhcp-3.0.1-65.el4_8.1.ia64.rpm	`9e309393fed4433974c34f45328cec90`
dhcp-devel-3.0.1-65.el4_8.1.ia64.rpm	`370b628051752284e32fb1c05c6e8e1b`

x86_64:
dhclient-3.0.1-65.el4_8.1.x86_64.rpm	`908a164936f46ea7f8bf8f0477eceabc`
dhcp-3.0.1-65.el4_8.1.x86_64.rpm	`557704ce9c241fce3434acc99975984c`
dhcp-devel-3.0.1-65.el4_8.1.x86_64.rpm	`e7a425ad71eadbb7de9561ecf40c1608`

Red Hat Enterprise Linux WS (v. 4)

SRPMS:
dhcp-3.0.1-65.el4_8.1.src.rpm	`95695bf71f04b832f893572251a603a2`

IA-32:
dhclient-3.0.1-65.el4_8.1.i386.rpm	`88e584cae71d8a01383fd07db0ca7a8e`
dhcp-3.0.1-65.el4_8.1.i386.rpm	`8c128a7bd13781d1ef779118aed76fff`
dhcp-devel-3.0.1-65.el4_8.1.i386.rpm	`1bad8b4e101f780b67b44702775830e2`

IA-64:
dhclient-3.0.1-65.el4_8.1.ia64.rpm	`eb0cb068c116517f788de30805981733`
dhcp-3.0.1-65.el4_8.1.ia64.rpm	`9e309393fed4433974c34f45328cec90`
dhcp-devel-3.0.1-65.el4_8.1.ia64.rpm	`370b628051752284e32fb1c05c6e8e1b`

x86_64:
dhclient-3.0.1-65.el4_8.1.x86_64.rpm	`908a164936f46ea7f8bf8f0477eceabc`
dhcp-3.0.1-65.el4_8.1.x86_64.rpm	`557704ce9c241fce3434acc99975984c`
dhcp-devel-3.0.1-65.el4_8.1.x86_64.rpm	`e7a425ad71eadbb7de9561ecf40c1608`

(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

507717 - CVE-2009-0692 dhclient: stack overflow leads to arbitrary code execution as root

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692
http://www.redhat.com/security/updates/classification/#critical

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https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/