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Sicherheit: DNS Poisoning in bind
Aktuelle Meldungen Distributionen
Name: DNS Poisoning in bind
ID: SUSE-SA:2007:047
Distribution: SUSE
Plattformen: SUSE Linux Enterprise Server 8, SUSE Linux Openexchange Server 4, SUSE UnitedLinux 1.0, SUSE Linux Standard Server 8, SUSE Linux School Server, SUSE Linux Enterprise Server 9, SUSE Novell Linux Desktop 9, SUSE Open Enterprise Server, SUSE Linux 10.0, SUSE LINUX 10.1, SUSE Novell Linux POS 9, SUSE LINUX Retail Solution 8, SUSE openSUSE 10.2, SUSE Linux Enterprise Desktop 10 SP1, SUSE Linux Enterprise Server 10 SP1, SUSE SLE SDK 10 SP1
Datum: Mi, 1. August 2007, 16:10
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2926
Applikationen: BIND

Originalnachricht


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

______________________________________________________________________________

SUSE Security Announcement

Package: bind, bind9
Announcement ID: SUSE-SA:2007:047
Date: Wed, 01 Aug 2007 14:00:00 +0000
Affected Products: SUSE LINUX 10.0
SUSE LINUX 10.1
openSUSE 10.2
UnitedLinux 1.0
SuSE Linux Enterprise Server 8
SuSE Linux Openexchange Server 4
SuSE Linux Standard Server 8
SuSE Linux School Server
SUSE LINUX Retail Solution 8
SUSE SLES 9
Novell Linux Desktop 9
Open Enterprise Server
Novell Linux POS 9
SUSE Linux Enterprise Desktop 10 SP1
SLE SDK 10 SP1
SUSE Linux Enterprise Server 10 SP1
Vulnerability Type: DNS cache poisoning
Severity (1-10): 4
SUSE Default Package: no
Cross-References: CVE-2007-2926

Content of This Advisory:
1) Security Vulnerability Resolved:
bind security update
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
- See SUSE Security Summary Report
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

Amit Klein found that the random number generator used by the BIND
name server to compute DNS query IDs generates predictable values.
Remote attackers could exploit this flaw to conduct DNS cache
poisoning attacks (CVE-2007-2926).

2) Solution or Work-Around

There is no known workaround, please install the update packages.

3) Special Instructions and Notes

Please close and restart all running instances of bind after the update.

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 <file.rpm>

to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.


x86 Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/bind-9.3.2-56.3.i586.rpm
48abc8f128c76c49e021005ffa37e9ee
bind-libs-9.3.2-56.3.i586.rpm
f240048ef7c3534bfc38fec305dd3544
bind-utils-9.3.2-56.3.i586.rpm
cebf7e1d7c0c26298a7b30dd0571074c

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/i586/bind-9.3.2-17.18.i586.rpm
0a6d5f40bb95626e04bc090a89011901
bind-libs-9.3.2-17.18.i586.rpm
f44c83eb3a7971001c58675dbde639be
bind-utils-9.3.2-17.18.i586.rpm
bb311a19785da40e826827b2acfcad72

SUSE LINUX 10.0:
bind-9.3.2-56.3.i586.rpm
a75a13517fe07dda2f3f6def7de206f0
bind-devel-9.3.2-56.3.i586.rpm
0745b6d2b41259c86269632a03804372
bind-doc-9.3.2-56.3.i586.rpm
14df9b80e49a627f4d5313e9cf95fc97
bind-libs-9.3.2-56.3.i586.rpm
9e4ef221bfde5aee6a94c904a98b2fc3
bind-lwresd-9.3.2-56.3.i586.rpm
35fc7567db77d89561e991176ff0f6a4
bind-utils-9.3.2-56.3.i586.rpm
46fdb7a792c81d8a597ee7bd046a0f65
nss_lwres-0.93-6.3.i586.rpm
0cea0ad2440d863eb5082138184e64ad

Power PC Platform:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/bind-9.3.2-56.3.ppc.rpm
8ba1e6488407ee636e2df2ed28a6e762
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/bind-libs-9.3.2-56.3.ppc.rpm
0c08f744bf7a730b1da5253372689ab9
bind-utils-9.3.2-56.3.ppc.rpm
d9ac9c156a8290b7fb36281648a687bb

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/ppc/bind-9.3.2-17.18.ppc.rpm
01196536550eb52905def53425a33fdb
bind-libs-9.3.2-17.18.ppc.rpm
c89a99c0076346029af97c7d700292b1
bind-utils-9.3.2-17.18.ppc.rpm
3065af7b1739cc9c9210ac4c2ea2fb20

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/ppc/bind-9.3.2-56.3.ppc.rpm
39fa5b6d2d6d05bf7b7e6ab10a26450b
bind-devel-9.3.2-56.3.ppc.rpm
01927c9dba84b552fe4678ea545a0e1f
bind-doc-9.3.2-56.3.ppc.rpm
e19c2a378da251d2298b39c8913bbee6
bind-libs-9.3.2-56.3.ppc.rpm
e38ecdcbcf9d4c45308d9cc0c6130a50
bind-lwresd-9.3.2-56.3.ppc.rpm
c3461c9830feb17ae4152d6c5152b4e1
bind-utils-9.3.2-56.3.ppc.rpm
61a09dd2a49b0fc851a75c910c784b45
nss_lwres-0.93-6.3.ppc.rpm
4f54b429356e3c3cd63025c828ee7fda

x86-64 Platform:

openSUSE 10.2:
bind-9.3.2-56.3.x86_64.rpm
a6f05877f1e67aa034510787ab4c5eb5
bind-libs-32bit-9.3.2-56.3.x86_64.rpm
b425e8ccab18397b345d3a264fb6385e
bind-libs-9.3.2-56.3.x86_64.rpm
9802cea2b3e51e15838280d71529543b
bind-utils-9.3.2-56.3.x86_64.rpm
5a826a5d01b13ad46825af5ec0be47d9

SUSE LINUX 10.1:
bind-9.3.2-17.18.x86_64.rpm
366c78e6581c683de19367aba4b4ec18
bind-libs-32bit-9.3.2-17.18.x86_64.rpm
67d44342aac8bb90cbc30cde05028ef5
bind-libs-9.3.2-17.18.x86_64.rpm
d14194bd4c8fd21292e619beb4b45e30
bind-utils-9.3.2-17.18.x86_64.rpm
169e61fbf1d14c74f3111129964f5781

SUSE LINUX 10.0:
bind-9.3.2-56.3.x86_64.rpm
abcc76ac1cfde1240debb90bb9a6e4d4
bind-devel-9.3.2-56.3.x86_64.rpm
c9d75ab01b6ec59a33ee057761b27689
bind-doc-9.3.2-56.3.x86_64.rpm
fb7f24a49961a51038148c3e7ddc02fb
bind-libs-32bit-9.3.2-56.3.x86_64.rpm
da1ba6adf8548175c2e2c20f82ac3aea
bind-libs-9.3.2-56.3.x86_64.rpm
eefb912d78be2d68336f5ba3e4af7da4
bind-lwresd-9.3.2-56.3.x86_64.rpm
68e60bd1dc5f3e7aeef46fb9cde0eb90
bind-utils-9.3.2-56.3.x86_64.rpm
bfbbfd8863c5d95ba01b3706b8070ed1
nss_lwres-0.93-6.3.x86_64.rpm
d2b01545788cc682d85ccec56a279d63

Sources:

openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/bind-9.3.2-56.3.src.rpm
38e0184897ace16acfe0c05bdc495db9

SUSE LINUX 10.1:
ftp://ftp.suse.com/pub/suse/update/10.1/rpm/src/bind-9.3.2-17.18.src.rpm
2d3b097dfc202b56b43b9fe32c7e3c32

SUSE LINUX 10.0:
ftp://ftp.suse.com/pub/suse/i386/update/10.0/rpm/src/bind-9.3.2-56.3.src.rpm
32e43c29bdcd6fe8de2afd4de2e56918
nss_lwres-0.93-6.3.src.rpm
fc699b0b5d8fd0ad309789323dcbab21

Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:

UnitedLinux 1.0
b90103f8211b22803a126a1781f9c870.html

SuSE Linux Openexchange Server 4
b90103f8211b22803a126a1781f9c870.html

SuSE Linux Enterprise Server 8
b90103f8211b22803a126a1781f9c870.html

SuSE Linux Standard Server 8
b90103f8211b22803a126a1781f9c870.html

SuSE Linux School Server
b90103f8211b22803a126a1781f9c870.html

SUSE LINUX Retail Solution 8
b90103f8211b22803a126a1781f9c870.html

SUSE Linux Enterprise Server 10 SP1
9661e828c0e56d3297ed6fc60453d1e7.html

SLE SDK 10 SP1
9661e828c0e56d3297ed6fc60453d1e7.html

SUSE Linux Enterprise Desktop 10 SP1
9661e828c0e56d3297ed6fc60453d1e7.html

Open Enterprise Server
c9ea0bc14d84824dc2e54f71907d6322.html

Novell Linux POS 9
c9ea0bc14d84824dc2e54f71907d6322.html

Novell Linux Desktop 9
c9ea0bc14d84824dc2e54f71907d6322.html

SUSE SLES 9
c9ea0bc14d84824dc2e54f71907d6322.html

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

- See SUSE Security Summary Report


______________________________________________________________________________

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 <file>

replacing <file> with the name of the file where you saved the
announcement. The output for a valid signature looks like:

gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team
<security@suse.de>"

where <DATE> 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.

There are two verification methods that can be used independently from
each other to prove the authenticity of a downloaded file or RPM package:

1) Using the internal gpg signatures of the rpm package
2) MD5 checksums as provided in this announcement

1) The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command

rpm -v --checksig <file.rpm>

to verify the signature of the package, replacing <file.rpm> 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.

2) If you need an alternative means of verification, use the md5sum
command to verify the authenticity of the packages. Execute the command

md5sum <filename.rpm>

after you downloaded the file from a SUSE FTP server or its mirrors.
Then compare the resulting md5sum with the one that is listed in the
SUSE security announcement. Because the announcement containing the
checksums is cryptographically signed (by security@suse.de), the
checksums show proof of the authenticity of the package if the
signature of the announcement is valid. Note that the md5 sums
published in the SUSE Security Announcements are valid for the
respective packages only. Newer versions of these packages cannot be
verified.

- 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+subscribe@opensuse.org>.

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
<opensuse-security-announce+subscribe@opensuse.org>.

=====================================================================
SUSE's security contact is <security@suse.com> or
<security@suse.de>.
The <security@suse.de> public key is listed below.
=====================================================================
______________________________________________________________________________

The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular, the
clear text signature should show proof of the authenticity of the text.

SUSE Linux Products GmbH provides no warranties of any kind whatsoever
with respect to the information contained in this security advisory.

Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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