BIND 9.6.3 is the current release of BIND 9.6.
This document summarizes changes from BIND 9.6.2-P2 to BIND 9.6.3.
Please see the CHANGES file in the source code release for a
complete list of all changes.
The latest development version of BIND 9 software can always be found
on our web site at
http://www.isc.org/downloads/development.
There you will find additional information about each release,
source code, and some pre-compiled versions for certain operating
systems.
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Adding a NO DATA signed negative response to cache failed to clear
any matching RRSIG records already in cache. A subsequent lookup
of the cached NO DATA entry could crash named (INSIST) when the
unexpected RRSIG was also returned with the NO DATA cache entry.
[RT #22288] [CVE-2010-3613] [VU#706148]
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BIND, acting as a DNSSEC validator, was determining if the NS RRset
is insecure based on a value that could mean either that the RRset
is actually insecure or that there wasn't a matching key for the RRSIG
in the DNSKEY RRset when resuming from validating the DNSKEY RRset.
This can happen when in the middle of a DNSKEY algorithm rollover,
when two different algorithms were used to sign a zone but only the
new set of keys are in the zone DNSKEY RRset.
[RT #22309] [CVE-2010-3614] [VU#837744]
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BIND now builds with threads disabled in versions of NetBSD earlier
than 5.0 and with pthreads enabled by default in NetBSD versions 5.0
and higher. Also removes support for unproven-pthreads, mit-pthreads
and ptl2. [RT #19203]
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HPUX now correctly defaults to using /dev/poll, which should
increase performance. [RT #21919]
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If named is running as a threaded application, after an "rndc stop"
command has been issued, other inbound TCP requests can cause named
to hang and never complete shutdown. [RT #22108]
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When performing a GSS-TSIG signed dynamic zone update, memory could be
leaked. This causes an unclean shutdown and may affect long-running
servers. [RT #22573]
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A bug in NetBSD and FreeBSD kernels with SO_ACCEPTFILTER enabled allows
for a TCP DoS attack. Until there is a kernel fix, ISC is disabling
SO_ACCEPTFILTER support in BIND. [RT #22589]
-
Corrected a defect where a combination of dynamic updates and zone
transfers incorrectly locked the in-memory zone database, causing
named to freeze. [RT #22614]
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Don't run MX checks (check-mx) when the MX record points to ".".
[RT #22645]
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DST key reference counts can now be incremented via dst_key_attach.
[RT #22672]
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isc_mutex_init_errcheck() in phtreads/mutex.c failed to destroy attr. [RT #22766]
-
The Kerberos realm was being truncated when being pulled from the
the host prinicipal, make krb5-self updates fail. [RT #22770]
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named failed to preserve the case of domain names in RDATA which is not compressible when writing master files. [RT #22863]
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There was a bug in how the clients-per-query code worked with some
query patterns. This could result, in rare circumstances, in having all
the client query slots filled with queries for the same DNS label,
essentially ignoring the max-clients-per-query setting.
[RT #22972]
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Worked around a race condition in the cache database memory
handling. Without this fix a DNS cache DB or ADB could
incorrectly stay in an over memory state, effectively refusing
further caching, which subsequently made a BIND 9 caching
server unworkable.
[RT #21818]
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Microsoft changed the behavior of sockets between NT/XP based
stacks vs Vista/windows7 stacks. Server 2003/2008 have the older
behavior, 2008r2 has the new behavior. With the change, different
error results are possible, so ISC adapted BIND to handle the new
error results.
This resolves an issue where sockets would shut down on
Windows servers causing named to stop responding to queries.
[RT #21906]
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Windows has non-POSIX compliant behavior in its rename() and unlink()
calls. This caused journal compaction to fail on Windows BIND servers
with the log error: "dns_journal_compact failed: failure".
[RT #22434]
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/supportisc.