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195 lines
7.3 KiB
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195 lines
7.3 KiB
HTML
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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 V1.71.1">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="article" lang="en"><div class="sect1" lang="en">
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="id2542126"></a>Release Notes for BIND Version 9.9.8b1</h2></div></div></div>
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<div class="sect2" lang="en">
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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="sect2" lang="en">
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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 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="sect2" lang="en">
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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 type="disc">
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<li><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>
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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 Böck 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>
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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 #39795]
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</p>
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</li>
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<li>
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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="sect2" lang="en">
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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 type="disc">
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<li>
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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><strong class="command">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 type="circle">
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<li><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><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><p>
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An <span><strong class="command">--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.
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</p></li>
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<li><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="sect2" lang="en">
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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 type="disc">
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<li><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><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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</ul></div>
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</div>
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<div class="sect2" lang="en">
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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 type="disc">
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<li><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><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><p>
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Some answer formatting options didn't work correctly with
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<span><strong class="command">dig +short</strong></span>. [RT #39291]
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</p></li>
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</ul></div>
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</div>
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<div class="sect2" lang="en">
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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 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="sect2" lang="en">
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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 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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