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______________________________________________________________________________
SUSE Security Announcement
Package: dhcp-client
Announcement ID: SUSE-SA:2009:037
Date: Wed, 15 Jul 2009 14:00:00 +0000
Affected Products: openSUSE 10.3
openSUSE 11.0
openSUSE 11.1
SUSE SLES 9
Novell Linux Desktop 9
Open Enterprise Server
Novell Linux POS 9
SLE SDK 10 SP2
SUSE Linux Enterprise Desktop 10 SP2
SUSE Linux Enterprise Server 10 SP2
SLED 11
SLES 11
Vulnerability Type: remote code execution
Severity (1-10): 8
SUSE Default Package: yes
Cross-References: CVE-2009-0692
Content of This Advisory:
1) Security Vulnerability Resolved:
dhclient stack overflow
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- ruby
- samba
- libpng
6) Authenticity Verification and Additional Information
______________________________________________________________________________
1) Problem Description and Brief Discussion
The DHCP client (dhclient) could be crashed by a malicious DHCP
server sending an overlong subnet field (CVE-2009-0692).
In theory a malicious DHCP server could exploit the flaw to execute
arbitrary code as root on machines using dhclient to obtain network
settings. Newer distributions (SLES10+, openSUSE) do have buffer
overflow checking that guards against this kind of stack overflow
though. So actual exploitability is rather unlikely.
2) Solution or Work-Around
There is no known workaround, please install the update packages.
3) Special Instructions and Notes
Please restart all running instances of dhclient after the update or
reboot the machine.
4) Package Location and Checksums
The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command
rpm -Fhv
to apply the update, replacing with the filename of the
downloaded RPM package.
x86 Platform:
openSUSE 11.1:
http://ftp5.gwdg.de/pub/opensuse/discontinued/debug/update/11.1/rpm/i586/dhcp-debuginfo-3.1.1-6.5.1.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/debug/update/11.1/rpm/i586/dhcp-debugsource-3.1.1-6.5.1.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/i586/dhcp-3.1.1-6.5.1.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/i586/dhcp-client-3.1.1-6.5.1.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/i586/dhcp-devel-3.1.1-6.5.1.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/i586/dhcp-relay-3.1.1-6.5.1.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/i586/dhcp-server-3.1.1-6.5.1.i586.rpm
openSUSE 11.0:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/i586/dhcp-3.0.6-86.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/i586/dhcp-client-3.0.6-86.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/i586/dhcp-devel-3.0.6-86.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/i586/dhcp-relay-3.0.6-86.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/i586/dhcp-server-3.0.6-86.4.i586.rpm
openSUSE 10.3:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/i586/dhcp-3.0.6-24.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/i586/dhcp-client-3.0.6-24.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/i586/dhcp-devel-3.0.6-24.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/i586/dhcp-relay-3.0.6-24.4.i586.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/i586/dhcp-server-3.0.6-24.4.i586.rpm
Power PC Platform:
openSUSE 11.1:
http://ftp5.gwdg.de/pub/opensuse/discontinued/debug/update/11.1/rpm/ppc/dhcp-debuginfo-3.1.1-6.5.1.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/debug/update/11.1/rpm/ppc/dhcp-debugsource-3.1.1-6.5.1.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/ppc/dhcp-3.1.1-6.5.1.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/ppc/dhcp-client-3.1.1-6.5.1.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/ppc/dhcp-devel-3.1.1-6.5.1.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/ppc/dhcp-relay-3.1.1-6.5.1.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/ppc/dhcp-server-3.1.1-6.5.1.ppc.rpm
openSUSE 11.0:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/ppc/dhcp-3.0.6-86.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/ppc/dhcp-client-3.0.6-86.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/ppc/dhcp-devel-3.0.6-86.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/ppc/dhcp-relay-3.0.6-86.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/ppc/dhcp-server-3.0.6-86.4.ppc.rpm
openSUSE 10.3:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/ppc/dhcp-3.0.6-24.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/ppc/dhcp-client-3.0.6-24.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/ppc/dhcp-devel-3.0.6-24.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/ppc/dhcp-relay-3.0.6-24.4.ppc.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/ppc/dhcp-server-3.0.6-24.4.ppc.rpm
x86-64 Platform:
openSUSE 11.1:
http://ftp5.gwdg.de/pub/opensuse/discontinued/debug/update/11.1/rpm/x86_64/dhcp-debuginfo-3.1.1-6.5.1.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/debug/update/11.1/rpm/x86_64/dhcp-debugsource-3.1.1-6.5.1.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/x86_64/dhcp-3.1.1-6.5.1.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/x86_64/dhcp-client-3.1.1-6.5.1.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/x86_64/dhcp-devel-3.1.1-6.5.1.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/x86_64/dhcp-relay-3.1.1-6.5.1.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/x86_64/dhcp-server-3.1.1-6.5.1.x86_64.rpm
openSUSE 11.0:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/x86_64/dhcp-3.0.6-86.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/x86_64/dhcp-client-3.0.6-86.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/x86_64/dhcp-devel-3.0.6-86.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/x86_64/dhcp-relay-3.0.6-86.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/x86_64/dhcp-server-3.0.6-86.4.x86_64.rpm
openSUSE 10.3:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/x86_64/dhcp-3.0.6-24.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/x86_64/dhcp-client-3.0.6-24.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/x86_64/dhcp-devel-3.0.6-24.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/x86_64/dhcp-relay-3.0.6-24.4.x86_64.rpm
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/x86_64/dhcp-server-3.0.6-24.4.x86_64.rpm
Sources:
openSUSE 11.1:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.1/rpm/src/dhcp-3.1.1-6.5.1.src.rpm
openSUSE 11.0:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/11.0/rpm/src/dhcp-3.0.6-86.4.src.rpm
openSUSE 10.3:
http://ftp5.gwdg.de/pub/opensuse/discontinued/update/10.3/rpm/src/dhcp-3.0.6-24.4.src.rpm
Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:
Open Enterprise Server
https://login.microfocus.com/nidp/app/login;keywords=ecae7b6a88e669baec4b55c8fb8d3b1c
Novell Linux POS 9
https://login.microfocus.com/nidp/app/login;keywords=ecae7b6a88e669baec4b55c8fb8d3b1c
Novell Linux Desktop 9
https://login.microfocus.com/nidp/app/login;keywords=ecae7b6a88e669baec4b55c8fb8d3b1c
SUSE SLES 9
https://login.microfocus.com/nidp/app/login;keywords=ecae7b6a88e669baec4b55c8fb8d3b1c
SUSE Linux Enterprise Server 10 SP2
https://login.microfocus.com/nidp/app/login;keywords=f8ba1c87c9b632aae917daaa99ff7563
SLE SDK 10 SP2
https://login.microfocus.com/nidp/app/login;keywords=f8ba1c87c9b632aae917daaa99ff7563
SUSE Linux Enterprise 10 SP2 DEBUGINFO
https://login.microfocus.com/nidp/app/login;keywords=f8ba1c87c9b632aae917daaa99ff7563
SUSE Linux Enterprise Desktop 10 SP2
https://login.microfocus.com/nidp/app/login;keywords=f8ba1c87c9b632aae917daaa99ff7563
SLES 11
https://login.microfocus.com/nidp/app/login;keywords=8344cd148acb6a76268d2b1462cf9a03
SLED 11
https://login.microfocus.com/nidp/app/login;keywords=8344cd148acb6a76268d2b1462cf9a03
SLES 11 DEBUGINFO
https://login.microfocus.com/nidp/app/login;keywords=8344cd148acb6a76268d2b1462cf9a03
______________________________________________________________________________
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- ruby
- insufficient return value checks for openssl function
OCSP_basic_verify() (CVE-2009-0642) allowed attackers to use
revoked certificates.
- the entropy of DNS identifiers was increased to avoid spoofing
attacks (CVE-2008-3905).
- The code for parsing XML data was vulnerable to a denial of
service bug (CVE-2008-3790).
- An attack on algorithm complexity was possible in function
WEBrick::HTTP::DefaultFileHandler() while parsing HTTP requests
(CVE-2008-3656) as well as by using the regex engine
(CVE-2008-3443) causing high CPU load.
- Ruby's access restriction code (CVE-2008-3655) as well as
safe-level handling using function DL.dlopen() (CVE-2008-3657) and
big decimal handling (CVE-2009-1904) was improved.
Affected Products: SLES9, SLES10, SLES11, openSUSE 10.3-11.1
- samba
- smbclient was prone to a format string vulnerability (CVE-2009-1886)
- file ACLs could potentially be bypassed when DOS filemode was
enabled (CVE-2009-1888).
Affected Products: SLES10, SLES11, openSUSE 10.3-11.1
- libpng
libpng did not properly parse 1-bit interlaced images. Attackers could potentially use this to read portions of memory (CVE-2009-2042).
Affected Products: SLES9, SLES10, SLES11, openSUSE 10.3-11.1
______________________________________________________________________________
6) Authenticity Verification and Additional Information
- Announcement authenticity verification:
SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.
To verify the signature of the announcement, save it as text into a file
and run the command
gpg --verify
replacing with the name of the file where you saved the
announcement. The output for a valid signature looks like:
gpg: Signature made using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team "
where is replaced by the date the document was signed.
If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command
gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc
- Package authenticity verification:
SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.
The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command
rpm -v --checksig
to verify the signature of the package, replacing with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@suse.de with the key ID 9C800ACA.
This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.
- SUSE runs two security mailing lists to which any interested party may
subscribe:
opensuse-security@opensuse.org
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
.
opensuse-security-announce@opensuse.org
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
.
==================================================================== SUSE's security contact is or .
The public key is listed below.
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