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280 lines
10 KiB
XML
280 lines
10 KiB
XML
<!DOCTYPE book [
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<!ENTITY Scaron "Š">
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<!ENTITY ccaron "č">
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<!ENTITY aacute "á">
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<!ENTITY mdash "—">
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<!ENTITY ouml "ö">]>
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<!--
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- Copyright (C) 2014-2017 Internet Systems Consortium, Inc. ("ISC")
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-
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- This Source Code Form is subject to the terms of the Mozilla Public
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- License, v. 2.0. If a copy of the MPL was not distributed with this
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- file, You can obtain one at http://mozilla.org/MPL/2.0/.
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-->
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<section xmlns:db="http://docbook.org/ns/docbook" version="5.0"><info/>
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<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="noteversion.xml"/>
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<section xml:id="relnotes_intro"><info><title>Introduction</title></info>
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<para>
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BIND 9.12.0 is a new feature release of BIND, still under development.
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This document summarizes new features and functional changes that
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have been introduced on this branch. With each development
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release leading up to the final BIND 9.12.0 release, this document
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will be updated with additional features added and bugs fixed.
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</para>
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</section>
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<section xml:id="relnotes_download"><info><title>Download</title></info>
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<para>
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The latest versions of BIND 9 software can always be found at
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<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.isc.org/downloads/">http://www.isc.org/downloads/</link>.
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There you will find additional information about each release,
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source code, and pre-compiled versions for Microsoft Windows
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operating systems.
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</para>
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</section>
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<section xml:id="relnotes_license"><info><title>License Change</title></info>
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<para>
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With the release of BIND 9.11.0, ISC changed to the open
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source license for BIND from the ISC license to the Mozilla
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Public License (MPL 2.0).
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</para>
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<para>
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The MPL-2.0 license requires that if you make changes to
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licensed software (e.g. BIND) and distribute them outside
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your organization, that you publish those changes under that
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same license. It does not require that you publish or disclose
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anything other than the changes you made to our software.
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</para>
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<para>
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This new requirement will not affect anyone who is using BIND
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without redistributing it, nor anyone redistributing it without
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changes, therefore this change will be without consequence
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for most individuals and organizations who are using BIND.
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</para>
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<para>
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Those unsure whether or not the license change affects their
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use of BIND, or who wish to discuss how to comply with the
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license may contact ISC at <link
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xlink:href="https://www.isc.org/mission/contact/">
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https://www.isc.org/mission/contact/</link>.
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</para>
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</section>
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<section xml:id="relnotes_security"><info><title>Security Fixes</title></info>
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<itemizedlist>
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<listitem>
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<para>
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If a server is configured with a response policy zone (RPZ)
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that rewrites an answer with local data, and is also configured
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for DNS64 address mapping, a NULL pointer can be read
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triggering a server crash. This flaw is disclosed in
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CVE-2017-3135. [RT #44434]
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</para>
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</listitem>
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<listitem>
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<para>
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A coding error in the <option>nxdomain-redirect</option>
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feature could lead to an assertion failure if the redirection
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namespace was served from a local authoritative data source
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such as a local zone or a DLZ instead of via recursive
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lookup. This flaw is disclosed in CVE-2016-9778. [RT #43837]
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</para>
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</listitem>
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<listitem>
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<para>
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<command>named</command> could mishandle authority sections
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with missing RRSIGs, triggering an assertion failure. This
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flaw is disclosed in CVE-2016-9444. [RT #43632]
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</para>
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</listitem>
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<listitem>
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<para>
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<command>named</command> mishandled some responses where
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covering RRSIG records were returned without the requested
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data, resulting in an assertion failure. This flaw is
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disclosed in CVE-2016-9147. [RT #43548]
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</para>
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</listitem>
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<listitem>
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<para>
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<command>named</command> incorrectly tried to cache TKEY
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records which could trigger an assertion failure when there was
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a class mismatch. This flaw is disclosed in CVE-2016-9131.
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[RT #43522]
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</para>
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</listitem>
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<listitem>
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<para>
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It was possible to trigger assertions when processing
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responses containing answers of type DNAME. This flaw is
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disclosed in CVE-2016-8864. [RT #43465]
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</para>
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</listitem>
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<listitem>
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<para>
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Added the ability to specify the maximum number of records
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permitted in a zone (<option>max-records #;</option>).
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This provides a mechanism to block overly large zone
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transfers, which is a potential risk with slave zones from
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other parties, as described in CVE-2016-6170.
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[RT #42143]
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xml:id="relnotes_features"><info><title>New Features</title></info>
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<itemizedlist>
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<listitem>
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<para>
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<command>dig +ednsopt</command> now accepts the names
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for EDNS options in addition to numeric values. For example,
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an EDNS Client-Subnet option could be sent using
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<command>dig +ednsopt=ecs:...</command>. Thanks to
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John Worley of Secure64 for the contribution. [RT #44461]
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</para>
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</listitem>
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<listitem>
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<para>
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Added support for the EDNS TCP Keepalive option (RFC 7828);
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this allows negotiation of longer-lived TCP sessions
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to reduce the overhead of setting up TCP for individual
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queries. [RT #42126]
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</para>
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</listitem>
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<listitem>
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<para>
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Added support for the EDNS Padding option (RFC 7830),
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which obfuscates packet size analysis when DNS queries
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are sent over an encrypted channel. [RT #42094]
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</para>
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</listitem>
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<listitem>
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<para>
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The <option>print-time</option> option in the
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<option>logging</option> configuration can now take arguments
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<userinput>local</userinput>, <userinput>iso8601</userinput> or
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<userinput>iso8601-utc</userinput> to indicate the format in
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which the date and time should be logged. For backward
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compatibility, <userinput>yes</userinput> is a synonym for
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<userinput>local</userinput>. [RT #42585]
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</para>
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</listitem>
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<listitem>
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<para>
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<command>rndc</command> commands which refer to zone names
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can now reference a zone of type <command>redirect</command>
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by using the special zone name "-redirect". (Previously this
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was not possible because <command>redirect</command> zones
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always have the name ".", which can be ambiguous.)
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</para>
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<para>
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In the event you need to manipulate a a zone actually
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called "-redirect", use a trailing dot: "-redirect."
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</para>
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<para>
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Note: This change does not appply to the
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<command>rndc addzone</command> or
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<command>rndc modzone</command> commands.
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</para>
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</listitem>
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<listitem>
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<para>
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<command>named-checkconf -l</command> lists the zones found
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in <filename>named.conf</filename>. [RT #43154]
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xml:id="relnotes_changes"><info><title>Feature Changes</title></info>
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<itemizedlist>
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<listitem>
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<para>
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Expanded and improved the YAML output from
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<command>dnstap-read -y</command>: it now includes packet
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size and a detailed breakdown of message contents.
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[RT #43622] [RT #43642]
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</para>
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</listitem>
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<listitem>
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<para>
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If an ACL is specified with an address prefix in which the
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prefix length is longer than the address portion (for example,
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192.0.2.1/8), it will now be treated as a fatal error during
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configuration. [RT #43367]
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xml:id="relnotes_bugs"><info><title>Bug Fixes</title></info>
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<itemizedlist>
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<listitem>
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<para>
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Named could deadlock there were multiple changes to
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NSEC/NSEC3 parameters for a zone being processed at the
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same time. [RT #42770]
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</para>
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</listitem>
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<listitem>
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<para>
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Named could trigger a assertion when sending notify
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messages. [RT #44019]
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</para>
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</listitem>
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<listitem>
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<para>
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Referencing a nonexistent zone in a <command>response-policy</command>
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statement could cause an assertion failure during configuration.
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[RT #43787]
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</para>
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</listitem>
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<listitem>
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<para>
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<command>rndc addzone</command> could cause a crash
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when attempting to add a zone with a type other than
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<command>master</command> or <command>slave</command>.
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Such zones are now rejected. [RT #43665]
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</para>
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</listitem>
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<listitem>
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<para>
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<command>named</command> could hang when encountering log
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file names with large apparent gaps in version number (for
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example, when files exist called "logfile.0", "logfile.1",
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and "logfile.1482954169"). This is now handled correctly.
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[RT #38688]
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</para>
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</listitem>
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<listitem>
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<para>
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If a zone was updated while <command>named</command> was
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processing a query for nonexistent data, it could return
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out-of-sync NSEC3 records causing potential DNSSEC validation
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failure. [RT #43247]
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xml:id="end_of_life"><info><title>End of Life</title></info>
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<para>
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The end of life for BIND 9.12 is yet to be determined but
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will not be before BIND 9.14.0 has been released for 6 months.
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<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.isc.org/downloads/software-support-policy/">https://www.isc.org/downloads/software-support-policy/</link>
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</para>
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</section>
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<section xml:id="relnotes_thanks"><info><title>Thank You</title></info>
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<para>
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Thank you to everyone who assisted us in making this release possible.
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If you would like to contribute to ISC to assist us in continuing to
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make quality open source software, please visit our donations page at
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<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.isc.org/donate/">http://www.isc.org/donate/</link>.
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</para>
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</section>
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</section>
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