[RedHat] Schwachstellen in ISC BIND

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Liebe Kolleginnen und Kollegen,

soeben erreichte uns nachfolgendes RedHat Security Advisory. Wir geben
diese Informationen unveraendert an Sie weiter.

CVE-2010-3613 – Schwachstelle im ISC BIND9 named

Der named aus dem ISC BIND9 Paket vor den Versionen 9.6.2-P3, 9.7.2-P3,
sowie 9.6-ESV-R3 behandelt wiederholte Abfragen nach unbekannten Zonen
nicht richtig. Bestehende RRSIG Eintraege werden nicht bereinigt wenn
ein ‘No DATA’ Eintrag im Cache gehalten wird, so dass nachfolgende
Abfragen (mit INSIST) den named zum Absturz bringen koennen. Ein
entfernter Angreifer kann diese Schwachstelle zu einem Denial-of-Service
ausnutzen.

CVE-2010-3614 – Schwachstelle im ISC BIND9 DNSKEY Algorithmus Rollover

Der named aus ISC BIND9 vor den Versionen 9.6.2-P3, 9.7.2-P3, 9.4-ESV-R4
sowie 9.6-ESV-R3 bestimmt, wenn er als DNSSEC Resolver eingesetzt wird,
den Security Status eines NS RRset nicht richtig. Bei einem DNSKEY
Algorithmus Rollover der eine Zone mit zwei verschiedenen Algorithmen
signiert, jedoch lediglich den neuen Schluesselsatz im DNSKEY RRset
haelt, wird bei der DNSSEC Validierung kein passender Schluessel
gefunden. Ein entfernter Angreifer, dem es gelingt einen Rollover
auszuloesen, kann diese Schwachstelle zu einem Denial-of-Service
ausnutzen.

Betroffen sind die folgenden Software Pakete und Plattformen:

Paket bind

Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) – i386, ppc64, s390x,
x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) – i386, x86_64

Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.

(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,
Klaus Moeller, DFN-CERT

– —
Dipl. Inform. Klaus Moeller (Project Development Team)
Phone: +49 40 808077-555, Fax: +49 40 808077-556

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

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

Synopsis: Important: bind security update
Advisory ID: RHSA-2010:0975-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2010-0975.html
Issue date: 2010-12-13
CVE Names: CVE-2010-3613 CVE-2010-3614
=====================================================================

1. Summary:

Updated bind packages that fix two security issues are now available for
Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 6) – i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) – i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) – x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) – x86_64
Red Hat Enterprise Linux Server (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) – i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) – i386, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) – i386, 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.

It was discovered that named did not invalidate previously cached RRSIG
records when adding an NCACHE record for the same entry to the cache. A
remote attacker allowed to send recursive DNS queries to named could use
this flaw to crash named. (CVE-2010-3613)

It was discovered that, in certain cases, named did not properly perform
DNSSEC validation of an NS RRset for zones in the middle of a DNSKEY
algorithm rollover. This flaw could cause the validator to incorrectly
determine that the zone is insecure and not protected by DNSSEC.
(CVE-2010-3614)

All BIND users are advised to upgrade to these updated packages, which
contain a backported patch to resolve these issues. After installing the
update, the BIND daemon (named) will be restarted automatically.

4. Solution:

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

This update is available via the 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/):

658974 – CVE-2010-3613 bind: failure to clear existing RRSIG records when a NO DATA is negatively cached could DoS named
658977 – CVE-2010-3614 bind: key algorithm rollover may mark secure answers as insecure

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

i386:
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm
bind-utils-9.7.0-5.P2.el6_0.1.i686.rpm

x86_64:
bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-utils-9.7.0-5.P2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

i386:
bind-9.7.0-5.P2.el6_0.1.i686.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.i686.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.i686.rpm

x86_64:
bind-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm
bind-devel-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

x86_64:
bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-utils-9.7.0-5.P2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

i386:
bind-9.7.0-5.P2.el6_0.1.i686.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.i686.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm
bind-utils-9.7.0-5.P2.el6_0.1.i686.rpm

ppc64:
bind-9.7.0-5.P2.el6_0.1.ppc64.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.ppc64.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.ppc64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.ppc64.rpm
bind-utils-9.7.0-5.P2.el6_0.1.ppc64.rpm

s390x:
bind-9.7.0-5.P2.el6_0.1.s390x.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.s390x.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.s390x.rpm
bind-libs-9.7.0-5.P2.el6_0.1.s390x.rpm
bind-utils-9.7.0-5.P2.el6_0.1.s390x.rpm

x86_64:
bind-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-utils-9.7.0-5.P2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

i386:
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.i686.rpm

ppc64:
bind-debuginfo-9.7.0-5.P2.el6_0.1.ppc.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.ppc64.rpm
bind-devel-9.7.0-5.P2.el6_0.1.ppc.rpm
bind-devel-9.7.0-5.P2.el6_0.1.ppc64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.ppc.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.ppc64.rpm

s390x:
bind-debuginfo-9.7.0-5.P2.el6_0.1.s390.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.s390x.rpm
bind-devel-9.7.0-5.P2.el6_0.1.s390.rpm
bind-devel-9.7.0-5.P2.el6_0.1.s390x.rpm
bind-libs-9.7.0-5.P2.el6_0.1.s390.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.s390x.rpm

x86_64:
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm
bind-devel-9.7.0-5.P2.el6_0.1.x86_64.rpm
bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

i386:
bind-9.7.0-5.P2.el6_0.1.i686.rpm
bind-chroot-9.7.0-5.P2.el6_0.1.i686.rpm
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-libs-9.7.0-5.P2.el6_0.1.i686.rpm
bind-utils-9.7.0-5.P2.el6_0.1.i686.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/bind-9.7.0-5.P2.el6_0.1.src.rpm

i386:
bind-debuginfo-9.7.0-5.P2.el6_0.1.i686.rpm
bind-devel-9.7.0-5.P2.el6_0.1.i686.rpm
bind-sdb-9.7.0-5.P2.el6_0.1.i686.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-3613.html
https://www.redhat.com/security/data/cve/CVE-2010-3614.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

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[RedHat] Schwachstellen in ISC BIND - RHSA-2010:0975-01

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[RedHat] Schwachstellen in ISC BIND – RHSA-2010:0975-01

[RedHat] Schwachstellen in ISC BIND - RHSA-2010:0975-01