====================================================================                   Red Hat Security Advisory

Synopsis:          Critical: dhcp security update
Advisory ID:       RHSA-2009:1154-02
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2009:1154.html
Issue date:        2009-07-14
CVE Names:         CVE-2009-0692 CVE-2009-1893 
====================================================================
1. Summary:

Updated dhcp packages that fix two security issues are now available for
Red Hat Enterprise Linux 3.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Description:

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)

An insecure temporary file use flaw was discovered in the DHCP daemon's
init script ("/etc/init.d/dhcpd"). A local attacker could use this flaw to
overwrite an arbitrary file with the output of the "dhcpd -t" command via
a symbolic link attack, if a system administrator executed the DHCP init
script with the "configtest", "restart", or "reload" option.
(CVE-2009-1893)

Users of DHCP should upgrade to these updated packages, which contain
backported patches to correct these issues.

4. 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

5. Bugs fixed (http://bugzilla.redhat.com/):

507717 - CVE-2009-0692 dhclient: stack overflow leads to arbitrary code execution as root
510024 - CVE-2009-1893 dhcp: insecure temporary file use in the dhcpd init script

6. Package List:

Red Hat Enterprise Linux AS version 3:

Source:

i386:
dhclient-3.0.1-10.2_EL3.i386.rpm
dhcp-3.0.1-10.2_EL3.i386.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm
dhcp-devel-3.0.1-10.2_EL3.i386.rpm

ia64:
dhclient-3.0.1-10.2_EL3.ia64.rpm
dhcp-3.0.1-10.2_EL3.ia64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm
dhcp-devel-3.0.1-10.2_EL3.ia64.rpm

ppc:
dhclient-3.0.1-10.2_EL3.ppc.rpm
dhcp-3.0.1-10.2_EL3.ppc.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.ppc.rpm
dhcp-devel-3.0.1-10.2_EL3.ppc.rpm

s390:
dhclient-3.0.1-10.2_EL3.s390.rpm
dhcp-3.0.1-10.2_EL3.s390.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.s390.rpm
dhcp-devel-3.0.1-10.2_EL3.s390.rpm

s390x:
dhclient-3.0.1-10.2_EL3.s390x.rpm
dhcp-3.0.1-10.2_EL3.s390x.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.s390x.rpm
dhcp-devel-3.0.1-10.2_EL3.s390x.rpm

x86_64:
dhclient-3.0.1-10.2_EL3.x86_64.rpm
dhcp-3.0.1-10.2_EL3.x86_64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm
dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm

Red Hat Desktop version 3:

Source:

i386:
dhclient-3.0.1-10.2_EL3.i386.rpm
dhcp-3.0.1-10.2_EL3.i386.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm
dhcp-devel-3.0.1-10.2_EL3.i386.rpm

x86_64:
dhclient-3.0.1-10.2_EL3.x86_64.rpm
dhcp-3.0.1-10.2_EL3.x86_64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm
dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:

i386:
dhclient-3.0.1-10.2_EL3.i386.rpm
dhcp-3.0.1-10.2_EL3.i386.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm
dhcp-devel-3.0.1-10.2_EL3.i386.rpm

ia64:
dhclient-3.0.1-10.2_EL3.ia64.rpm
dhcp-3.0.1-10.2_EL3.ia64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm
dhcp-devel-3.0.1-10.2_EL3.ia64.rpm

x86_64:
dhclient-3.0.1-10.2_EL3.x86_64.rpm
dhcp-3.0.1-10.2_EL3.x86_64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm
dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:

i386:
dhclient-3.0.1-10.2_EL3.i386.rpm
dhcp-3.0.1-10.2_EL3.i386.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm
dhcp-devel-3.0.1-10.2_EL3.i386.rpm

ia64:
dhclient-3.0.1-10.2_EL3.ia64.rpm
dhcp-3.0.1-10.2_EL3.ia64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm
dhcp-devel-3.0.1-10.2_EL3.ia64.rpm

x86_64:
dhclient-3.0.1-10.2_EL3.x86_64.rpm
dhcp-3.0.1-10.2_EL3.x86_64.rpm
dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm
dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1893
http://www.redhat.com/security/updates/classification/#critical

8. Contact:

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

Copyright 2009 Red Hat, Inc.

RedHat: Critical: dhcp security update

Updated dhcp packages that fix two security issues are now available for Red Hat Enterprise Linux 3. This update has been rated as having critical security impact by the Red Hat S...

Summary

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)
An insecure temporary file use flaw was discovered in the DHCP daemon's init script ("/etc/init.d/dhcpd"). A local attacker could use this flaw to overwrite an arbitrary file with the output of the "dhcpd -t" command via a symbolic link attack, if a system administrator executed the DHCP init script with the "configtest", "restart", or "reload" option. (CVE-2009-1893)
Users of DHCP should upgrade to these updated packages, which contain backported patches to correct these issues.



Summary


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

References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1893 http://www.redhat.com/security/updates/classification/#critical

Package List

Red Hat Enterprise Linux AS version 3:
Source:
i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm
ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm
ppc: dhclient-3.0.1-10.2_EL3.ppc.rpm dhcp-3.0.1-10.2_EL3.ppc.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ppc.rpm dhcp-devel-3.0.1-10.2_EL3.ppc.rpm
s390: dhclient-3.0.1-10.2_EL3.s390.rpm dhcp-3.0.1-10.2_EL3.s390.rpm dhcp-debuginfo-3.0.1-10.2_EL3.s390.rpm dhcp-devel-3.0.1-10.2_EL3.s390.rpm
s390x: dhclient-3.0.1-10.2_EL3.s390x.rpm dhcp-3.0.1-10.2_EL3.s390x.rpm dhcp-debuginfo-3.0.1-10.2_EL3.s390x.rpm dhcp-devel-3.0.1-10.2_EL3.s390x.rpm
x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm
Red Hat Desktop version 3:
Source:
i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm
x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm
Red Hat Enterprise Linux ES version 3:
Source:
i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm
ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm
x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm
Red Hat Enterprise Linux WS version 3:
Source:
i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm
ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm
x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package


Severity
Advisory ID: RHSA-2009:1154-02
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2009:1154.html
Issued Date: : 2009-07-14
CVE Names: CVE-2009-0692 CVE-2009-1893

Topic

Updated dhcp packages that fix two security issues are now available forRed Hat Enterprise Linux 3.This update has been rated as having critical security impact by the RedHat Security Response Team.


Topic


 

Relevant Releases Architectures

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Desktop version 3 - i386, x86_64

Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64


Bugs Fixed

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

510024 - CVE-2009-1893 dhcp: insecure temporary file use in the dhcpd init script


Related News

4.Lock AbstractDigital Esm H320
2 - 3 min read
Tails 6.2 is a new Linux distribution release that expands its multilingual support and improves security features. The distribution is a
19.Laptop Bed Esm H320
2 - 3 min read
AlmaLinux 9.4 beta has been released and provides compelling reasons to consider it for desktop usage. While AlmaLinux is primarily known as a
32.Lock Code Circular Esm H320
2 - 3 min read
Linux admins and security practitioners face significant challenges in keeping their Linux systems secure amidst the constant threat of kernel bugs.
1.Penguin Landscape Esm H320
2 - 3 min read
A significant security threat, known as the Spectre v2 exploit, has been observed targeting Linux systems running on modern Intel processors. Let's
10.FingerPrint Locks Esm H320
2 - 3 min read
The recent release of I2P 2.5.0 , an anonymous P2P network that protects against online censorship, surveillance, and monitoring, has brought a slew
24.Key Code Esm H320
2 - 3 min read
The Akira ransomware group has extorted approximately $42 million from over 250 victims since January 1, 2024. The group initially focused on
5.ShakingHands Esm H320
2 - 3 min read
At The Linux Foundation's Open Source Summit North America , Linus Torvalds, the creator of Linux, discussed various topics related to Linux
30.Lock Globe Motherboard Esm H320
1 - 2 min read
The SPDX 3.0 release marks a significant milestone in software management, particularly for Linux admins, infosec professionals, internet security
Sign Up

Get the Latest News & Insights

Sign up to get the latest security news affecting Linux and open source delivered straight to your inbox.

© 2024 Guardian Digital, Inc All Rights Reserved