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Category:   Application (Generic)  >   BIND Vendors:   ISC (Internet Software Consortium)
(Red Hat Issues Fix) BIND Input Validation Flaw in Control Channel Lets Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1035451
SecurityTracker URL:  http://securitytracker.com/id/1035451
CVE Reference:   CVE-2016-1285   (Links to External Site)
Date:  Apr 1 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.2.0 - 9.8.8, 9.9.0 - 9.9.8-P3, 9.9.3-S1 - 9.9.8-S5, 9.10.0 - 9.10.3-P3
Description:   A vulnerability was reported in BIND. A remote user can cause the target service to crash.

A remote user on a system specified in the 'named.conf' controls address list can send a specially crafted packet to the target rndc control channel to trigger a parsing error in 'sexpr.c' or 'alist.c' and cause denial of service conditions for clients.

Systems that accept remote commands on the control channel are affected.

Impact:   A remote user can cause denial of service conditions on the target service.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2016-0562.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2016-0562.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6.4, 6.5, 6.6

Message History:   This archive entry is a follow-up to the message listed below.
Mar 10 2016 BIND Input Validation Flaw in Control Channel Lets Remote Users Cause the Target Service to Crash



 Source Message Contents

Subject:  [RHSA-2016:0562-01] Important: bind security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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

Synopsis:          Important: bind security update
Advisory ID:       RHSA-2016:0562-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0562.html
Issue date:        2016-03-31
CVE Names:         CVE-2016-1285 CVE-2016-1286 
=====================================================================

1. Summary:

An update for bind is now available for Red Hat Enterprise Linux 6.4
Advanced Update Support, Red Hat Enterprise Linux 6.5 Advanced Update
Support, and Red Hat Enterprise Linux 6.6 Extended Update Support.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux HPC Node EUS (v. 6.6) - x86_64
Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.4) - x86_64
Red Hat Enterprise Linux Server AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server EUS (v. 6.6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 6.6) - i386, ppc64, 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.

Security Fix(es):

* A denial of service flaw was found in the way BIND parsed signature
records for DNAME records. By sending a specially crafted query, a remote
attacker could use this flaw to cause named to crash. (CVE-2016-1286)

* A denial of service flaw was found in the way BIND processed certain
control channel input. A remote attacker able to send a malformed packet to
the control channel could use this flaw to cause named to crash.
(CVE-2016-1285)

Red Hat would like to thank ISC for reporting these issues.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

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

After installing the update, the BIND daemon (named) will be restarted
automatically.

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

1315674 - CVE-2016-1285 bind: malformed packet sent to rndc can trigger assertion failure
1315680 - CVE-2016-1286 bind: malformed signature records for DNAME records can trigger assertion failure

6. Package List:

Red Hat Enterprise Linux HPC Node EUS (v. 6.6):

Source:
bind-9.8.2-0.30.rc1.el6_6.5.src.rpm

x86_64:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.6):

x86_64:
bind-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm

Red Hat Enterprise Linux Server AUS (v. 6.4):

Source:
bind-9.8.2-0.17.rc1.el6_4.8.src.rpm

x86_64:
bind-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm
bind-chroot-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm
bind-debuginfo-9.8.2-0.17.rc1.el6_4.8.i686.rpm
bind-debuginfo-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm
bind-libs-9.8.2-0.17.rc1.el6_4.8.i686.rpm
bind-libs-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm
bind-utils-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm

Red Hat Enterprise Linux Server AUS (v. 6.5):

Source:
bind-9.8.2-0.23.rc1.el6_5.3.src.rpm

x86_64:
bind-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm
bind-chroot-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.3.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.3.i686.rpm
bind-libs-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm
bind-utils-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm

Red Hat Enterprise Linux Server EUS (v. 6.6):

Source:
bind-9.8.2-0.30.rc1.el6_6.5.src.rpm

i386:
bind-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.5.i686.rpm

ppc64:
bind-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.ppc.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.ppc.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm

s390x:
bind-9.8.2-0.30.rc1.el6_6.5.s390x.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.5.s390x.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.s390.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.s390x.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.s390.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.s390x.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.5.s390x.rpm

x86_64:
bind-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-chroot-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-libs-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-utils-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 6.4):

Source:
bind-9.8.2-0.17.rc1.el6_4.8.src.rpm

x86_64:
bind-debuginfo-9.8.2-0.17.rc1.el6_4.8.i686.rpm
bind-debuginfo-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm
bind-devel-9.8.2-0.17.rc1.el6_4.8.i686.rpm
bind-devel-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm
bind-sdb-9.8.2-0.17.rc1.el6_4.8.x86_64.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 6.5):

Source:
bind-9.8.2-0.23.rc1.el6_5.3.src.rpm

x86_64:
bind-debuginfo-9.8.2-0.23.rc1.el6_5.3.i686.rpm
bind-debuginfo-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.3.i686.rpm
bind-devel-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm
bind-sdb-9.8.2-0.23.rc1.el6_5.3.x86_64.rpm

Red Hat Enterprise Linux Server Optional EUS (v. 6.6):

i386:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.5.i686.rpm

ppc64:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.ppc.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.ppc.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.5.ppc64.rpm

s390x:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.s390.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.s390x.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.s390.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.s390x.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.5.s390x.rpm

x86_64:
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-debuginfo-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.i686.rpm
bind-devel-9.8.2-0.30.rc1.el6_6.5.x86_64.rpm
bind-sdb-9.8.2-0.30.rc1.el6_6.5.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-2016-1285
https://access.redhat.com/security/cve/CVE-2016-1286
https://access.redhat.com/security/updates/classification/#important
https://kb.isc.org/article/AA-01352
https://kb.isc.org/article/AA-01353

8. Contact:

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

Copyright 2016 Red Hat, Inc.
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