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Sicherheit: Denial of Service in bind97
Aktuelle Meldungen Distributionen
Name: Denial of Service in bind97
ID: RHSA-2014:1985-01
Distribution: Red Hat
Plattformen: Red Hat Enterprise Linux
Datum: Fr, 12. Dezember 2014, 07:57
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8500
Applikationen: BIND

Originalnachricht

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

Synopsis: Important: bind97 security update
Advisory ID: RHSA-2014:1985-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2014-1985.html
Issue date: 2014-12-12
CVE Names: CVE-2014-8500
=====================================================================

1. Summary:

Updated bind97 packages that fix one security issue are now available for
Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

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 denial of service flaw was found in the way BIND followed DNS
delegations. A remote attacker could use a specially crafted zone
containing a large number of referrals which, when looked up and processed,
would cause named to use excessive amounts of memory or crash.
(CVE-2014-8500)

All bind97 users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. 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
https://access.redhat.com/articles/11258

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

1171912 - CVE-2014-8500 bind: delegation handling denial of service

6. Package List:

RHEL Desktop Workstation (v. 5 client):

Source:
bind97-9.7.0-21.P2.el5_11.1.src.rpm

i386:
bind97-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.i386.rpm

x86_64:
bind97-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
bind97-9.7.0-21.P2.el5_11.1.src.rpm

i386:
bind97-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.i386.rpm

ia64:
bind97-9.7.0-21.P2.el5_11.1.ia64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.ia64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.ia64.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.ia64.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.ia64.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.ia64.rpm

ppc:
bind97-9.7.0-21.P2.el5_11.1.ppc.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.ppc.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.ppc.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.ppc64.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.ppc.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.ppc64.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.ppc.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.ppc64.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.ppc.rpm

s390x:
bind97-9.7.0-21.P2.el5_11.1.s390x.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.s390x.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.s390.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.s390x.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.s390.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.s390x.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.s390.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.s390x.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.s390x.rpm

x86_64:
bind97-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.1.x86_64.rpm
bind97-utils-9.7.0-21.P2.el5_11.1.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://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2014-8500
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2014 Red Hat, Inc.
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