Release Notes for BIND Version 9.14.3

Introduction

BIND 9.14 is a stable branch of BIND. This document summarizes significant
changes since the last production release on that branch.

Please see the file CHANGES for a more detailed list of changes and bug
fixes.

Note on Version Numbering

As of BIND 9.13/9.14, BIND has adopted the "odd-unstable/even-stable"
release numbering convention. BIND 9.14 contains new features added during
the BIND 9.13 development process. Henceforth, the 9.14 branch will be
limited to bug fixes and new feature development will proceed in the
unstable 9.15 branch, and so forth.

Supported Platforms

Since 9.12, BIND has undergone substantial code refactoring and cleanup,
and some very old code has been removed that was needed to support legacy
platforms which are no longer supported by their vendors and for which ISC
is no longer able to perform quality assurance testing. Specifically,
workarounds for old versions of UnixWare, BSD/OS, AIX, Tru64, SunOS,
TruCluster and IRIX have been removed.

On UNIX-like systems, BIND now requires support for POSIX.1c threads (IEEE
Std 1003.1c-1995), the Advanced Sockets API for IPv6 (RFC 3542), and
standard atomic operations provided by the C compiler.

More information can be found in the PLATFORM.md file that is included in
the source distribution of BIND 9. If your platform compiler and system
libraries provide the above features, BIND 9 should compile and run. If
that isn't the case, the BIND development team will generally accept
patches that add support for systems that are still supported by their
respective vendors.

As of BIND 9.14, the BIND development team has also made cryptography
(i.e., TSIG and DNSSEC) an integral part of the DNS server. The OpenSSL
cryptography library must be available for the target platform. A PKCS#11
provider can be used instead for Public Key cryptography (i.e., DNSSEC
signing and validation), but OpenSSL is still required for general
cryptography operations such as hashing and random number generation.

Download

The latest versions of BIND 9 software can always be found at http://
www.isc.org/downloads/. There you will find additional information about
each release, source code, and pre-compiled versions for Microsoft Windows
operating systems.

Security Fixes

  * A race condition could trigger an assertion failure when a large
    number of incoming packets were being rejected. This flaw is disclosed
    in CVE-2019-6471. [GL #942]

Bug Fixes

  * When qname-minimization was set to relaxed, some improperly configured
    domains would fail to resolve, but would have succeeded if
    minimization were disabled. named will now fall back to normal
    resolution in such cases, and also uses type A rather than NS for
    minimal queries in order to reduce the likelihood of encountering the
    problem. [GL #1055]

License

BIND is open source software licenced under the terms of the Mozilla
Public License, version 2.0 (see the LICENSE file for the full text).

The license requires that if you make changes to BIND and distribute them
outside your organization, those changes must be published under the same
license. It does not require that you publish or disclose anything other
than the changes you have made to our software. This requirement does not
affect anyone who is using BIND, with or without modifications, without
redistributing it, nor anyone redistributing BIND without changes.

Those wishing to discuss license compliance may contact ISC at https://
www.isc.org/mission/contact/.

End of Life

The end of life date for BIND 9.14 has not yet been determined. For those
needing long term support, the current Extended Support Version (ESV) is
BIND 9.11, which will be supported until at least December 2021. See
https://www.isc.org/downloads/software-support-policy/ for details of
ISC's software support policy.

Thank You

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 http://
www.isc.org/donate/.
