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269 lines
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HTML
269 lines
11 KiB
HTML
<!--
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<!-- $Id$ -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title></title>
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<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
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</head>
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="article"><div class="section">
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<div class="titlepage"></div>
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<span style="color: red"><title>Release Notes for BIND Version 9.9.8</title></span><div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_intro"></a>Introduction</h3></div></div></div>
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<p>
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This document summarizes changes since the last production release
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of BIND on the corresponding major release branch.
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</p>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_download"></a>Download</h3></div></div></div>
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<p>
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The latest versions of BIND 9 software can always be found at
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<a class="link" href="http://www.isc.org/downloads/" target="_top">http://www.isc.org/downloads/</a>.
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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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</p>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_security"></a>Security Fixes</h3></div></div></div>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem"><p>
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Insufficient testing when parsing a message allowed
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records with an incorrect class to be be accepted,
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triggering a REQUIRE failure when those records
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were subsequently cached. This flaw is disclosed
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in CVE-2015-8000. [RT #40987]
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</p></li>
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<li class="listitem"><p>
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Incorrect reference counting could result in an INSIST
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failure if a socket error occurred while performing a
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lookup. This flaw is disclosed in CVE-2015-8461. [RT#40945]
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</p></li>
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<li class="listitem"><p>
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An incorrect boundary check in the OPENPGPKEY rdatatype
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could trigger an assertion failure. This flaw is disclosed
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in CVE-2015-5986. [RT #40286]
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</p></li>
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<li class="listitem">
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<p>
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A buffer accounting error could trigger an assertion failure
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when parsing certain malformed DNSSEC keys.
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</p>
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<p>
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This flaw was discovered by Hanno B<>ck of the Fuzzing
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Project, and is disclosed in CVE-2015-5722. [RT #40212]
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</p>
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</li>
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<li class="listitem">
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<p>
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A specially crafted query could trigger an assertion failure
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in message.c.
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</p>
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<p>
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This flaw was discovered by Jonathan Foote, and is disclosed
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in CVE-2015-5477. [RT #40046]
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</p>
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</li>
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<li class="listitem">
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<p>
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On servers configured to perform DNSSEC validation, an
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assertion failure could be triggered on answers from
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a specially configured server.
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</p>
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<p>
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This flaw was discovered by Breno Silveira Soares, and is
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disclosed in CVE-2015-4620. [RT #39795]
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</p>
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</li>
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</ul></div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_features"></a>New Features</h3></div></div></div>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem">
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<p>
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New quotas have been added to limit the queries that are
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sent by recursive resolvers to authoritative servers
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experiencing denial-of-service attacks. When configured,
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these options can both reduce the harm done to authoritative
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servers and also avoid the resource exhaustion that can be
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experienced by recursives when they are being used as a
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vehicle for such an attack.
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</p>
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<p>
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NOTE: These options are not available by default; use
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<span class="command"><strong>configure --enable-fetchlimit</strong></span> to include
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them in the build.
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</p>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
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<li class="listitem"><p>
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<code class="option">fetches-per-server</code> limits the number of
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simultaneous queries that can be sent to any single
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authoritative server. The configured value is a starting
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point; it is automatically adjusted downward if the server is
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partially or completely non-responsive. The algorithm used to
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adjust the quota can be configured via the
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<code class="option">fetch-quota-params</code> option.
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</p></li>
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<li class="listitem"><p>
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<code class="option">fetches-per-zone</code> limits the number of
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simultaneous queries that can be sent for names within a
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single domain. (Note: Unlike "fetches-per-server", this
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value is not self-tuning.)
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</p></li>
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</ul></div>
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<p>
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Statistics counters have also been added to track the number
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of queries affected by these quotas.
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</p>
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</li>
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<li class="listitem"><p>
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An <span class="command"><strong>--enable-querytrace</strong></span> configure switch is
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now available to enable very verbose query tracelogging. This
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option can only be set at compile time. This option has a
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negative performance impact and should be used only for
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debugging. [RT #37520]
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</p></li>
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<li class="listitem"><p>
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The following types have been implemented: CSYNC, NINFO, RKEY,
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SINK, TA, TALINK.
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</p></li>
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<li class="listitem"><p>
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EDNS COOKIE options content is now displayed as
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"COOKIE: <hexvalue>".
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</p></li>
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</ul></div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_changes"></a>Feature Changes</h3></div></div></div>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem"><p>
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Updated the compiled in addresses for H.ROOT-SERVERS.NET.
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</p></li>
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<li class="listitem"><p>
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Large inline-signing changes should be less disruptive.
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Signature generation is now done incrementally; the number
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of signatures to be generated in each quantum is controlled
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by "sig-signing-signatures <em class="replaceable"><code>number</code></em>;".
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[RT #37927]
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</p></li>
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<li class="listitem"><p>
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Retrieving the local port range from net.ipv4.ip_local_port_range
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on Linux is now supported.
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</p></li>
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<li class="listitem"><p>
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Active Directory names of the form gc._msdcs.<forest> are
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now accepted as valid hostnames when using the
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<code class="option">check-names</code> option. <forest> is still
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restricted to letters, digits and hyphens.
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</p></li>
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<li class="listitem"><p>
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Names containing rich text are now accepted as valid
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hostnames in PTR records in DNS-SD reverse lookup zones,
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as specified in RFC 6763. [RT #37889]
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</p></li>
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<li class="listitem"><p>
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The default preferred glue is now the address type of the
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transport the query was received over.
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</p></li>
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<li class="listitem"><p>
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On machines with 2 or more processors (CPU), the default value
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for the number of UDP listeners has been changed to the number
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of detected processors minus one.
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</p></li>
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<li class="listitem"><p>
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Zone transfers now use smaller message sizes to improve
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message compression. This results in reduced network usage.
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</p></li>
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</ul></div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_port"></a>Porting Changes</h3></div></div></div>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
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The Microsoft Windows install tool
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<span class="command"><strong>BINDInstall.exe</strong></span> which requires a
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non-free version of Visual Studio to be built, now uses two
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files (lists of flags and files) created by the Configure
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perl script with all the needed information which were
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previously compiled in the binary. Read
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<code class="filename">win32utils/build.txt</code> for more details.
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[RT #38915]
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</p></li></ul></div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_bugs"></a>Bug Fixes</h3></div></div></div>
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<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
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<li class="listitem"><p>
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Asynchronous zone loads were not handled correctly when the
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zone load was already in progress; this could trigger a crash
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in zt.c. [RT #37573]
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</p></li>
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<li class="listitem"><p>
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A race during shutdown or reconfiguration could
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cause an assertion failure in mem.c. [RT #38979]
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</p></li>
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<li class="listitem"><p>
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Some answer formatting options didn't work correctly with
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<span class="command"><strong>dig +short</strong></span>. [RT #39291]
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</p></li>
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<li class="listitem"><p>
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Malformed records of some types, including NSAP and UNSPEC,
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could trigger assertion failures when loading text zone files.
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[RT #40274] [RT #40285]
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</p></li>
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<li class="listitem"><p>
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Fixed a possible crash in ratelimiter.c caused by NOTIFY
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messages being removed from the wrong rate limiter queue.
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[RT #40350]
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</p></li>
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<li class="listitem"><p>
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The default <code class="option">rrset-order</code> of <code class="literal">random</code>
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was inconsistently applied. [RT #40456]
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</p></li>
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<li class="listitem"><p>
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BADVERS responses from broken authoritative name servers were
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not handled correctly. [RT #40427]
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</p></li>
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</ul></div>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="end_of_life"></a>End of Life</h3></div></div></div>
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<p>
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The BIND 9.9 (Extended Support Version) will be supported until June, 2017.
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<a class="link" href="https://www.isc.org/downloads/software-support-policy/" target="_top">https://www.isc.org/downloads/software-support-policy/</a>
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</p>
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</div>
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<div class="section">
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<div class="titlepage"><div><div><h3 class="title">
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<a name="relnotes_thanks"></a>Thank You</h3></div></div></div>
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<p>
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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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<a class="link" href="http://www.isc.org/donate/" target="_top">http://www.isc.org/donate/</a>.
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</p>
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</div>
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</div></div></body>
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</html>
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