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

Synopsis:          Important: bind security update
Advisory ID:       RHSA-2015:1443-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1443.html
Issue date:        2015-07-20
CVE Names:         CVE-2015-4620 
=====================================================================

1. Summary:

Updated bind packages that fix one security issue are now available for Red
Hat Enterprise Linux 7.

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:

Red Hat Enterprise Linux Client (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 performed DNSSEC validation. An attacker
able to make BIND (functioning as a DNS resolver with DNSSEC validation
enabled) resolve a name in an attacker-controlled domain could cause named
to exit unexpectedly with an assertion failure. (CVE-2015-4620)

Red Hat would like to thank ISC for reporting this issue.

All bind 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/):

1237258 - CVE-2015-4620 bind: abort DoS caused by uninitialized value use in isselfsigned()

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
bind-9.9.4-18.el7_1.2.src.rpm

noarch:
bind-license-9.9.4-18.el7_1.2.noarch.rpm

x86_64:
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-9.9.4-18.el7_1.2.i686.rpm
bind-libs-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-lite-9.9.4-18.el7_1.2.i686.rpm
bind-libs-lite-9.9.4-18.el7_1.2.x86_64.rpm
bind-utils-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64:
bind-9.9.4-18.el7_1.2.x86_64.rpm
bind-chroot-9.9.4-18.el7_1.2.x86_64.rpm
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-devel-9.9.4-18.el7_1.2.i686.rpm
bind-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-lite-devel-9.9.4-18.el7_1.2.i686.rpm
bind-lite-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-chroot-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
bind-9.9.4-18.el7_1.2.src.rpm

noarch:
bind-license-9.9.4-18.el7_1.2.noarch.rpm

x86_64:
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-9.9.4-18.el7_1.2.i686.rpm
bind-libs-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-lite-9.9.4-18.el7_1.2.i686.rpm
bind-libs-lite-9.9.4-18.el7_1.2.x86_64.rpm
bind-utils-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64:
bind-9.9.4-18.el7_1.2.x86_64.rpm
bind-chroot-9.9.4-18.el7_1.2.x86_64.rpm
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-devel-9.9.4-18.el7_1.2.i686.rpm
bind-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-lite-devel-9.9.4-18.el7_1.2.i686.rpm
bind-lite-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-chroot-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
bind-9.9.4-18.el7_1.2.src.rpm

noarch:
bind-license-9.9.4-18.el7_1.2.noarch.rpm

ppc64:
bind-9.9.4-18.el7_1.2.ppc64.rpm
bind-chroot-9.9.4-18.el7_1.2.ppc64.rpm
bind-debuginfo-9.9.4-18.el7_1.2.ppc.rpm
bind-debuginfo-9.9.4-18.el7_1.2.ppc64.rpm
bind-libs-9.9.4-18.el7_1.2.ppc.rpm
bind-libs-9.9.4-18.el7_1.2.ppc64.rpm
bind-libs-lite-9.9.4-18.el7_1.2.ppc.rpm
bind-libs-lite-9.9.4-18.el7_1.2.ppc64.rpm
bind-utils-9.9.4-18.el7_1.2.ppc64.rpm

s390x:
bind-9.9.4-18.el7_1.2.s390x.rpm
bind-chroot-9.9.4-18.el7_1.2.s390x.rpm
bind-debuginfo-9.9.4-18.el7_1.2.s390.rpm
bind-debuginfo-9.9.4-18.el7_1.2.s390x.rpm
bind-libs-9.9.4-18.el7_1.2.s390.rpm
bind-libs-9.9.4-18.el7_1.2.s390x.rpm
bind-libs-lite-9.9.4-18.el7_1.2.s390.rpm
bind-libs-lite-9.9.4-18.el7_1.2.s390x.rpm
bind-utils-9.9.4-18.el7_1.2.s390x.rpm

x86_64:
bind-9.9.4-18.el7_1.2.x86_64.rpm
bind-chroot-9.9.4-18.el7_1.2.x86_64.rpm
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-9.9.4-18.el7_1.2.i686.rpm
bind-libs-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-lite-9.9.4-18.el7_1.2.i686.rpm
bind-libs-lite-9.9.4-18.el7_1.2.x86_64.rpm
bind-utils-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
bind-9.9.4-18.ael7b_1.2.src.rpm

noarch:
bind-license-9.9.4-18.ael7b_1.2.noarch.rpm

ppc64le:
bind-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-chroot-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-debuginfo-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-libs-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-libs-lite-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-utils-9.9.4-18.ael7b_1.2.ppc64le.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
bind-debuginfo-9.9.4-18.el7_1.2.ppc.rpm
bind-debuginfo-9.9.4-18.el7_1.2.ppc64.rpm
bind-devel-9.9.4-18.el7_1.2.ppc.rpm
bind-devel-9.9.4-18.el7_1.2.ppc64.rpm
bind-lite-devel-9.9.4-18.el7_1.2.ppc.rpm
bind-lite-devel-9.9.4-18.el7_1.2.ppc64.rpm
bind-sdb-9.9.4-18.el7_1.2.ppc64.rpm
bind-sdb-chroot-9.9.4-18.el7_1.2.ppc64.rpm

s390x:
bind-debuginfo-9.9.4-18.el7_1.2.s390.rpm
bind-debuginfo-9.9.4-18.el7_1.2.s390x.rpm
bind-devel-9.9.4-18.el7_1.2.s390.rpm
bind-devel-9.9.4-18.el7_1.2.s390x.rpm
bind-lite-devel-9.9.4-18.el7_1.2.s390.rpm
bind-lite-devel-9.9.4-18.el7_1.2.s390x.rpm
bind-sdb-9.9.4-18.el7_1.2.s390x.rpm
bind-sdb-chroot-9.9.4-18.el7_1.2.s390x.rpm

x86_64:
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-devel-9.9.4-18.el7_1.2.i686.rpm
bind-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-lite-devel-9.9.4-18.el7_1.2.i686.rpm
bind-lite-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-chroot-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64le:
bind-debuginfo-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-devel-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-lite-devel-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-sdb-9.9.4-18.ael7b_1.2.ppc64le.rpm
bind-sdb-chroot-9.9.4-18.ael7b_1.2.ppc64le.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
bind-9.9.4-18.el7_1.2.src.rpm

noarch:
bind-license-9.9.4-18.el7_1.2.noarch.rpm

x86_64:
bind-9.9.4-18.el7_1.2.x86_64.rpm
bind-chroot-9.9.4-18.el7_1.2.x86_64.rpm
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-9.9.4-18.el7_1.2.i686.rpm
bind-libs-9.9.4-18.el7_1.2.x86_64.rpm
bind-libs-lite-9.9.4-18.el7_1.2.i686.rpm
bind-libs-lite-9.9.4-18.el7_1.2.x86_64.rpm
bind-utils-9.9.4-18.el7_1.2.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
bind-debuginfo-9.9.4-18.el7_1.2.i686.rpm
bind-debuginfo-9.9.4-18.el7_1.2.x86_64.rpm
bind-devel-9.9.4-18.el7_1.2.i686.rpm
bind-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-lite-devel-9.9.4-18.el7_1.2.i686.rpm
bind-lite-devel-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-9.9.4-18.el7_1.2.x86_64.rpm
bind-sdb-chroot-9.9.4-18.el7_1.2.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-2015-4620
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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