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5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<title>Appendix�A.�Release Notes</title>
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e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews<tr><th colspan="3" align="center">Appendix�A.�Release Notes</th></tr>
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5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews</table>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<hr>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews</div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="appendix">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="titlepage"><div><div><h1 class="title">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<a name="Bv9ARM.ch09"></a>Release Notes</h1></div></div></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="toc">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<p><b>Table of Contents</b></p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dl class="toc">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#id-1.10.2">Release Notes for BIND Version 9.11.1rc3</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dd><dl>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_intro">Introduction</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_download">Download</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#root_key">New DNSSEC Root Key</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_license">License Change</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_security">Security Fixes</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_changes">Feature Changes</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_bugs">Bug Fixes</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_maint">Maintenance</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_misc">Miscellaneous Notes</a></span></dt>
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#end_of_life">End of Life</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<dt><span class="section"><a href="Bv9ARM.ch09.html#relnotes_thanks">Thank You</a></span></dt>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews</dl></dd>
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews</dl>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews</div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <div class="section">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="titlepage"><div><div><h2 class="title" style="clear: both">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<a name="id-1.10.2"></a>Release Notes for BIND Version 9.11.1rc3</h2></div></div></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <div class="section">
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews<div class="titlepage"><div><div><h3 class="title">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<a name="relnotes_intro"></a>Introduction</h3></div></div></div>
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews <p>
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews This document summarizes changes since the last production
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews release on the BIND 9.11 branch.
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews Please see the <code class="filename">CHANGES</code> file for a further
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews list of bug fixes and other changes.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews </div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <div class="section">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="titlepage"><div><div><h3 class="title">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<a name="relnotes_download"></a>Download</h3></div></div></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The latest versions of BIND 9 software can always be found at
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <a class="link" href="http://www.isc.org/downloads/" target="_top">http://www.isc.org/downloads/</a>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews There you will find additional information about each release,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews source code, and pre-compiled versions for Microsoft Windows
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews operating systems.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews </div>
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <div class="section">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="titlepage"><div><div><h3 class="title">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<a name="root_key"></a>New DNSSEC Root Key</h3></div></div></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews ICANN is in the process of introducing a new Key Signing Key (KSK) for
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews the global root zone. BIND has multiple methods for managing DNSSEC
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews trust anchors, with somewhat different behaviors. If the root
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews key is configured using the <span class="command"><strong>managed-keys</strong></span>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews statement, or if the pre-configured root key is enabled by using
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <span class="command"><strong>dnssec-validation auto</strong></span>, then BIND can keep
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews keys up to date automatically. Servers configured in this way
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews will roll seamlessly to the new key when it is published in
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews the root zone. However, keys configured using the
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews <span class="command"><strong>trusted-keys</strong></span> statement are not automatically
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews maintained. If your server is performing DNSSEC validation
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews and is configured using <span class="command"><strong>trusted-keys</strong></span>, you are
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews advised to change your configuration before the root zone begins
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews signing with the new KSK. This is currently scheduled for
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews October 11, 2017.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews <p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews This release includes an updated version of the
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <code class="filename">bind.keys</code> file containing the new root
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews key. This file can also be downloaded from
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <a class="link" href="https://www.isc.org/bind-keys" target="_top">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews https://www.isc.org/bind-keys
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews </a>.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <div class="section">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<div class="titlepage"><div><div><h3 class="title">
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews<a name="relnotes_license"></a>License Change</h3></div></div></div>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews With the release of BIND 9.11.0, ISC changed to the open
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews source license for BIND from the ISC license to the Mozilla
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews Public License (MPL 2.0).
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews The MPL-2.0 license requires that if you make changes to
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews licensed software (e.g. BIND) and distribute them outside
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews your organization, that you publish those changes under that
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews same license. It does not require that you publish or disclose
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews anything other than the changes you made to our software.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews <p>
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews This new requirement will not affect anyone who is using BIND
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews without redistributing it, nor anyone redistributing it without
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews changes, therefore this change will be without consequence
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews for most individuals and organizations who are using BIND.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews </p>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews <p>
Those unsure whether or not the license change affects their
use of BIND, or who wish to discuss how to comply with the
license may contact ISC at <a class="link" href="https://www.isc.org/mission/contact/" target="_top">
https://www.isc.org/mission/contact/</a>.
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="relnotes_security"></a>Security Fixes</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<p>
'rndc ""' could trigger a assertion failure in named. This flaw
is disclosed in (CVE-2017-3138). [RT #44924]
</p>
</li>
<li class="listitem">
<p>
Some chaining (i.e., type CNAME or DNAME) responses to upstream
queries could trigger assertion failures. This flaw is disclosed
in CVE-2017-3137. [RT #44734]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>dns64</strong></span> with <span class="command"><strong>break-dnssec yes;</strong></span>
can result in an assertion failure. This flaw is disclosed in
CVE-2017-3136. [RT #44653]
</p>
</li>
<li class="listitem">
<p>
If a server is configured with a response policy zone (RPZ)
that rewrites an answer with local data, and is also configured
for DNS64 address mapping, a NULL pointer can be read
triggering a server crash. This flaw is disclosed in
CVE-2017-3135. [RT #44434]
</p>
</li>
<li class="listitem">
<p>
A coding error in the <code class="option">nxdomain-redirect</code>
feature could lead to an assertion failure if the redirection
namespace was served from a local authoritative data source
such as a local zone or a DLZ instead of via recursive
lookup. This flaw is disclosed in CVE-2016-9778. [RT #43837]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>named</strong></span> could mishandle authority sections
with missing RRSIGs, triggering an assertion failure. This
flaw is disclosed in CVE-2016-9444. [RT #43632]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>named</strong></span> mishandled some responses where
covering RRSIG records were returned without the requested
data, resulting in an assertion failure. This flaw is
disclosed in CVE-2016-9147. [RT #43548]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>named</strong></span> incorrectly tried to cache TKEY
records which could trigger an assertion failure when there was
a class mismatch. This flaw is disclosed in CVE-2016-9131.
[RT #43522]
</p>
</li>
<li class="listitem">
<p>
It was possible to trigger assertions when processing
responses containing answers of type DNAME. This flaw is
disclosed in CVE-2016-8864. [RT #43465]
</p>
</li>
<li class="listitem">
<p>
Added the ability to specify the maximum number of records
permitted in a zone (<code class="option">max-records #;</code>).
This provides a mechanism to block overly large zone
transfers, which is a potential risk with slave zones from
other parties, as described in CVE-2016-6170.
[RT #42143]
</p>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="relnotes_changes"></a>Feature Changes</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<p>
<span class="command"><strong>dnstap</strong></span> now stores both the local and remote
addresses for all messages, instead of only the remote address.
The default output format for <span class="command"><strong>dnstap-read</strong></span> has
been updated to include these addresses, with the initiating
address first and the responding address second, separated by
"-%gt;" or "%lt;-" to indicate in which direction the message
was sent. [RT #43595]
</p>
</li>
<li class="listitem">
<p>
Expanded and improved the YAML output from
<span class="command"><strong>dnstap-read -y</strong></span>: it now includes packet
size and a detailed breakdown of message contents.
[RT #43622] [RT #43642]
</p>
</li>
<li class="listitem">
<p>
If an ACL is specified with an address prefix in which the
prefix length is longer than the address portion (for example,
192.0.2.1/8), <span class="command"><strong>named</strong></span> will now log a warning.
In future releases this will be a fatal configuration error.
[RT #43367]
</p>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="relnotes_bugs"></a>Bug Fixes</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
<p>
A synthesized CNAME record appearing in a response before the
associated DNAME could be cached, when it should not have been.
This was a regression introduced while addressing CVE-2016-8864.
[RT #44318]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>named</strong></span> could deadlock if multiple changes
to NSEC/NSEC3 parameters for the same zone were being processed
at the same time. [RT #42770]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>named</strong></span> could trigger an assertion when
sending NOTIFY messages. [RT #44019]
</p>
</li>
<li class="listitem">
<p>
Referencing a nonexistent zone in a <span class="command"><strong>response-policy</strong></span>
statement could cause an assertion failure during configuration.
[RT #43787]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>rndc addzone</strong></span> could cause a crash
when attempting to add a zone with a type other than
<span class="command"><strong>master</strong></span> or <span class="command"><strong>slave</strong></span>.
Such zones are now rejected. [RT #43665]
</p>
</li>
<li class="listitem">
<p>
<span class="command"><strong>named</strong></span> could hang when encountering log
file names with large apparent gaps in version number (for
example, when files exist called "logfile.0", "logfile.1",
and "logfile.1482954169"). This is now handled correctly.
[RT #38688]
</p>
</li>
<li class="listitem">
<p>
If a zone was updated while <span class="command"><strong>named</strong></span> was
processing a query for nonexistent data, it could return
out-of-sync NSEC3 records causing potential DNSSEC validation
failure. [RT #43247]
</p>
</li>
</ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="relnotes_maint"></a>Maintenance</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
<p>
The built-in root hints have been updated to include an
IPv6 address (2001:500:12::d0d) for G.ROOT-SERVERS.NET.
</p>
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="relnotes_misc"></a>Miscellaneous Notes</h3></div></div></div>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
<p>
Authoritative server support for the EDNS Client Subnet option
(ECS), introduced in BIND 9.11.0, was based on an early version
of the specification, and is now known to have incompatibilities
with other ECS implementations. It is also inefficient, requiring
a separate view for each answer, and is unable to correct for
overlapping subnets in the configuration. It is intended for
testing purposes but is not recommended for for production use.
This was not made sufficiently clear in the documentation at
the time of release.
</p>
</li></ul></div>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="end_of_life"></a>End of Life</h3></div></div></div>
<p>
The end of life for BIND 9.11 is yet to be determined but
will not be before BIND 9.13.0 has been released for 6 months.
<a class="link" href="https://www.isc.org/downloads/software-support-policy/" target="_top">https://www.isc.org/downloads/software-support-policy/</a>
</p>
</div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="relnotes_thanks"></a>Thank You</h3></div></div></div>
<p>
Thank you to everyone who assisted us in making this release possible.
If you would like to contribute to ISC to assist us in continuing to
make quality open source software, please visit our donations page at
<a class="link" href="http://www.isc.org/donate/" target="_top">http://www.isc.org/donate/</a>.
</p>
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