—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1
Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.
CVE-2009-0696 – Fehlerhafte Zusicherung in der BIND Funktion
dns_db_findrdataset()
Ein Fehler bei der Verarbeitung von Dynamic DNS Update Paketen in der
BIND9 Funktion dns_db_findrdataset() fuehrt dazu, das eine Zusicherung
(Assertion) fehlschlaegt, wodurch der Nameserverprozess beendet wird.
Angreifer koennen diese Schwachstelle ueber das Netz zu einem Denial
of Service Angriff ausnutzen, indem sie ein entsprechend aufgebautes
Dynamic DNS Update Paket an einen verwundbaren BIND Nameserver senden.
Das Paket muss Resource Records aus einer Domain enthalten, fuer die
der Nameserver als Master fungiert. Hingegen spielt es keine Rolle, ob
Dynamic DNS auf dem Server aktiviert sind oder nicht.
Bitte beachten Sie, das alle BIND Nameserver per Default fuer einige
Zonen wie z.B. localhost als Master konfiguriert sind.
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket bind
Red Hat Enterprise Linux Desktop (v. 5 client) – i386, x86_64
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x, x86_64
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
Hersteller Advisory:
https://rhn.redhat.com/errata/RHSA-2009-1179.html
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Michael Groening, DFN-CERT
– —
Michael Groening (Incident Response Team)
DFN-CERT Services GmbH, https://www.dfn-cert.de, Phone +49 40 808077-555
Sitz / Register: Hamburg, AG Hamburg, HRB 88805, Ust-IdNr.: DE 232129737
Sachsenstrasse 5, 20097 Hamburg/Germany, CEO: Dr. Klaus-Peter Kossakowski
Automatische Warnmeldungen https://www.cert.dfn.de/autowarn
– —–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1
=====================================================================
Red Hat Security Advisory
Synopsis: Important: bind security update
Advisory ID: RHSA-2009:1179-02
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1179.html
Issue date: 2009-07-29
CVE Names: CVE-2009-0696
=====================================================================
1. Summary:
Updated bind packages that fix a security issue are now available for Red
Hat Enterprise Linux 5.
This update has been rated as having important security impact by the Red
Hat Security Response Team.
[Updated 29th July 2009]
The packages in this erratum have been updated to also correct this issue
in the bind-sdb package.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 5 client) – i386, x86_64
RHEL Desktop Workstation (v. 5 client) – i386, x86_64
Red Hat Enterprise Linux (v. 5 server) – i386, ia64, ppc, s390x, x86_64
3. Description:
The Berkeley Internet Name Domain (BIND) is an implementation of the Domain
Name System (DNS) protocols. BIND includes a DNS server (named); a resolver
library (routines for applications to use when interfacing with DNS); and
tools for verifying that the DNS server is operating correctly.
A flaw was found in the way BIND handles dynamic update message packets
containing the “ANY” record type. A remote attacker could use this flaw to
send a specially-crafted dynamic update packet that could cause named to
exit with an assertion failure. (CVE-2009-0696)
Note: even if named is not configured for dynamic updates, receiving such
a specially-crafted dynamic update packet could still cause named to exit
unexpectedly.
All BIND users are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing the
update, the BIND daemon (named) will be restarted automatically.
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
http://kbase.redhat.com/faq/docs/DOC-11259
5. Bugs fixed (http://bugzilla.redhat.com/):
514292 – CVE-2009-0696 bind: DoS (assertion failure) via nsupdate packets
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/bind-9.3.4-10.P1.el5_3.3.src.rpm
i386:
bind-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libs-9.3.4-10.P1.el5_3.3.i386.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.i386.rpm
bind-utils-9.3.4-10.P1.el5_3.3.i386.rpm
x86_64:
bind-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-libs-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libs-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-utils-9.3.4-10.P1.el5_3.3.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/bind-9.3.4-10.P1.el5_3.3.src.rpm
i386:
bind-chroot-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.i386.rpm
x86_64:
bind-chroot-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-devel-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.x86_64.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/bind-9.3.4-10.P1.el5_3.3.src.rpm
i386:
bind-9.3.4-10.P1.el5_3.3.i386.rpm
bind-chroot-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libs-9.3.4-10.P1.el5_3.3.i386.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.i386.rpm
bind-utils-9.3.4-10.P1.el5_3.3.i386.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.i386.rpm
ia64:
bind-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-chroot-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-devel-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-libs-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libs-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.ia64.rpm
bind-utils-9.3.4-10.P1.el5_3.3.ia64.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.ia64.rpm
ppc:
bind-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-chroot-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.ppc64.rpm
bind-devel-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-devel-9.3.4-10.P1.el5_3.3.ppc64.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.ppc64.rpm
bind-libs-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-libs-9.3.4-10.P1.el5_3.3.ppc64.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.ppc.rpm
bind-utils-9.3.4-10.P1.el5_3.3.ppc.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.ppc.rpm
s390x:
bind-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-chroot-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.s390.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-devel-9.3.4-10.P1.el5_3.3.s390.rpm
bind-devel-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.s390.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-libs-9.3.4-10.P1.el5_3.3.s390.rpm
bind-libs-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.s390x.rpm
bind-utils-9.3.4-10.P1.el5_3.3.s390x.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.s390x.rpm
x86_64:
bind-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-chroot-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.i386.rpm
bind-debuginfo-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-devel-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libbind-devel-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-libs-9.3.4-10.P1.el5_3.3.i386.rpm
bind-libs-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-sdb-9.3.4-10.P1.el5_3.3.x86_64.rpm
bind-utils-9.3.4-10.P1.el5_3.3.x86_64.rpm
caching-nameserver-9.3.4-10.P1.el5_3.3.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-2009-0696
http://www.redhat.com/security/updates/classification/#important
https://www.isc.org/node/474
8. Contact:
The Red Hat security contact is
details at https://www.redhat.com/security/team/contact/
Copyright 2009 Red Hat, Inc.
– —–BEGIN PGP SIGNATURE—–
Version: GnuPG v1.4.4 (GNU/Linux)
iD8DBQFKcOUnXlSAg2UNWIIRAgjTAJ9gTxT2/kED8Fho4amQj4FCRTD0UgCeOkEy
envYRnabnwMKJ10bbe/uNBQ=
=pwJM
– —–END PGP SIGNATURE—–
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1.4.2 (GNU/Linux)
iD8DBQFKcZh8k0kIxZMiiQ8RAm0tAJwMfcIqZePKgVRITpKEEKxDSe9RWgCgpA6t
MW+rl43C4CqL1UDAc4HkiGQ=
=NPEk
—–END PGP SIGNATURE—–
