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

Synopsis:          Important: bind97 security update
Advisory ID:       RHSA-2015:1707-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1707.html
Issue date:        2015-09-03
CVE Names:         CVE-2015-5722 
=====================================================================

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 parsed certain malformed
DNSSEC keys. A remote attacker could use this flaw to send a specially
crafted DNS query (for example, a query requiring a response from a zone
containing a deliberately malformed key) that would cause named functioning
as a validating resolver to crash. (CVE-2015-5722)

Red Hat would like to thank ISC for reporting this issue. Upstream
acknowledges Hanno Böck as the original reporter.

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.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

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

1259087 - CVE-2015-5722 bind: malformed DNSSEC key failed assertion denial of
 service

6. Package List:

RHEL Desktop Workstation (v. 5 client):

Source:
bind97-9.7.0-21.P2.el5_11.3.src.rpm

i386:
bind97-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.i386.rpm

x86_64:
bind97-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
bind97-9.7.0-21.P2.el5_11.3.src.rpm

i386:
bind97-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.i386.rpm

ia64:
bind97-9.7.0-21.P2.el5_11.3.ia64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.ia64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.ia64.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.ia64.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.ia64.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.ia64.rpm

ppc:
bind97-9.7.0-21.P2.el5_11.3.ppc.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.ppc.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.ppc.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.ppc64.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.ppc.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.ppc64.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.ppc.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.ppc64.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.ppc.rpm

s390x:
bind97-9.7.0-21.P2.el5_11.3.s390x.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.s390x.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.s390.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.s390x.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.s390.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.s390x.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.s390.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.s390x.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.s390x.rpm

x86_64:
bind97-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-chroot-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-debuginfo-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-devel-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.i386.rpm
bind97-libs-9.7.0-21.P2.el5_11.3.x86_64.rpm
bind97-utils-9.7.0-21.P2.el5_11.3.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://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2015-5722
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 2015 Red Hat, Inc.
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