BIND 9.9.1-P3 is now available
Introduction
BIND 9.9.1-P3 is the latest production release of BIND 9.9.
This document summarizes changes from BIND 9.9.0 to BIND 9.9.1-P3.
Please see the CHANGES file in the source code release for a
complete list of all changes.
Download
The latest versions of BIND 9 software can always be found on
our web site at http://www.isc.org/downloads/all. There you will
find additional information about each release, source code, and
pre-compiled versions for Microsoft Windows operating systems.
Support
Product support information is available on
http://www.isc.org/services/support for paid support options.
Free support is provided by our user community via a mailing
list. Information on all public email lists is available at
https://lists.isc.org/mailman/listinfo.
Security Fixes
Prevents a named assert (crash) when queried for a record whose
RDATA exceeds 65535 bytes. [RT #30416]
Prevents a named assert (crash) when validating caused by using
"Bad cache" data before it has been initialized. [RT #30025]
ISC_QUEUE handling for recursive clients was updated to address
a race condition that could cause a memory leak. This rarely
occurred with UDP clients, but could be a significant problem
for a server handling a steady rate of TCP queries. [RT #29539
& #30233]
A condition has been corrected where improper handling of
zero-length RDATA could cause undesirable behavior, including
termination of the named process. [RT #29644]
New Features
None
Feature Changes
BIND now recognizes the TLSA resource record type, created to
support IETF DANE (DNS-based Authentication of Named Entities)
[RT #28989]
A note will be added to the README in future releases to explain
that the improved scalability provided by using multiple threads
to listen for and process queries (change 3137, RT #22992) does
not provide any performance benefit when running BIND on versions
of the linux kernel that do not include the 'lockless UDP transmit
path' changes that were incorporated in 2.6.39. (Some linux
distributors may have provided this functionality under their
own version numbering systems).
Bug Fixes
Fixes the defect introduced by change #3314 that was causing
failures when saving stub zones to disk (resulting in excessive
CPU usage in some cases). [RT #29952]
The locking strategy around the handling of iterative queries
has been tuned to reduce unnecessary contention in a multi-threaded
environment. (Note that this may not provide a measurable
improvement over previous versions of BIND, but it corrects the
performance impact of change 3309 / RT #27995) [RT #29239]
Addresses a race condition that can cause named to to crash when
the masters list for a zone is updated via rndc reload/reconfig
[RT #26732]
named-checkconf now correctly validates dns64 clients acl
definitions. [RT #27631]
Fixes a race condition in zone.c that can cause named to crash
during the processing of rndc delzone [RT #29028]
Prevents a named segfault from resolver.c due to procedure
fctx_finddone() not being thread-safe. [RT #27995]
Improves DNS64 reverse zone performance. [RT #28563]
Adds wire format lookup method to sdb. [RT #28563]
Uses hmctx, not mctx when freeing rbtdb->heaps to avoid triggering
an assertion when flushing cache data. [RT #28571]
Prevents intermittent named crashes following an rndc reload [RT #28606]
Resolves inconsistencies in locating DNSSEC keys where zone names
contain characters that require special mappings [RT #28600]
A new flag -R has been added to queryperf for running tests
using non-recursive queries. It also now builds correctly on
MacOS version 10.7 (darwin) [RT #28565]
Named no longer crashes if gssapi is enabled in named.conf but
was not compiled into the binary [RT #28338]
SDB now handles unexpected errors from back-end database drivers
gracefully instead of exiting on an assert. [RT #28534]
Prevents named crashes as a result of dereferencing a NULL pointer
in zmgr_start_xfrin_ifquota if the zone was being removed while
there were zone transfers still pending [RT #28419]
Corrects a parser bug that could cause named to crash while
reading a malformed zone file. [RT #28467]
Ensures that when a client recurses its status fields are
consistently set so that named doesn't fail on an INSIST in
client.c:exit_check. [RT #28346]
Fixed a problem preventing proper use of 64 bit time values in
libbind. [RT # 26542]
isccc/cc.c:table_fromwire could fail to free an allocated object
on error, leading to a possible memory leak condition. [RT #28265]
Fixed a build error on systems without ENOTSUP. [RT #28200]
The header file isc/hmacsha.h is now installed when building
BIND. [RT #28169]
responses will no longer be returned in the additional
sect
BIND 9.6-ESV-R7-P3 is now available
Introduction BIND 9.6-ESV-R7-P3 is the latest production release of BIND 9.6-ESV. BIND 9.6-ESV is an Extended Support Version of BIND 9. This document summarizes changes from BIND 9.6-ESV-R6 to BIND 9.6-ESV-R7-P3. Please see the CHANGES file in the source code release for a complete list of all changes. Download The latest versions of BIND 9 software can always be found on our web site at http://www.isc.org/downloads/all. There you will find additional information about each release, source code, and pre-compiled versions for Microsoft Windows operating systems. Support Product support information is available on http://www.isc.org/support for paid support options. Free support is provided by our user community via a mailing list. Information on all public email lists is available at https://lists.isc.org/mailman/listinfo. Security Fixes Prevents a named assert (crash) when queried for a record whose RDATA exceeds 65535 bytes. [RT #30416] Prevents a named assert (crash) when validating caused by using "Bad cache" data before it has been initialized. [RT #30025] A condition has been corrected where improper handling of zero-length RDATA could cause undesirable behavior, including termination of the named process. [RT #29644] New Features None Feature Changes BIND now recognizes the TLSA resource record type, created to support IETF DANE (DNS-based Authentication of Named Entities) [RT #28989] Bug Fixes Fixes the defect introduced by change #3314 that was causing failures when saving stub zones to disk (resulting in excessive CPU usage in some cases). [RT #29952] The tests on random jitter values that are used when handling zone refreshes have been relaxed. Prior to this change named could terminate unexpectedly when processing stub zones. [RT# 19821] The locking strategy around the handling of iterative queries has been tuned to reduce unnecessary contention in a multi-threaded environment. (Note that this may not provide a measurable improvement over previous versions of BIND, but it corrects the performance impact of change 3309 / RT #27995) [RT #29239] Addresses a race condition that can cause named to to crash when the masters list for a zone is updated via rndc reload/reconfig [RT #26732] Fixes a race condition in zone.c that can cause named to crash during the processing of rndc delzone [RT #29028] Prevents a named segfault from resolver.c due to procedure fctx_finddone() not being thread-safe. [RT #27995] Uses hmctx, not mctx when freeing rbtdb->heaps to avoid triggering an assertion when flushing cache data. [RT #28571] A new flag -R has been added to queryperf for running tests using non-recursive queries. It also now builds correctly on MacOS version 10.7 (darwin) [RT #28565] Named no longer crashes if gssapi is enabled in named.conf but was not compiled into the binary [RT #28338] SDB now handles unexpected errors from back-end database drivers gracefully instead of exiting on an assert. [RT #28534] 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/supportisc. (c) 2001-2012 Internet Systems Consortium ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
BIND 9.7.6-P3 is now available
Introduction BIND 9.7.6-P3 is the latest production release of BIND 9.7. This document summarizes changes from BIND 9.7.5 to BIND 9.7.6-P3. Please see the CHANGES file in the source code release for a complete list of all changes. Download The latest versions of BIND 9 software can always be found on our web site at http://www.isc.org/downloads/all. There you will find additional information about each release, source code, and pre-compiled versions for Microsoft Windows operating systems. Support Product support information is available on http://www.isc.org/support for paid support options. Free support is provided by our user community via a mailing list. Information on all public email lists is available at https://lists.isc.org/mailman/listinfo. Security Fixes Prevents a named assert (crash) when queried for a record whose RDATA exceeds 65535 bytes. [RT #30416] Prevents a named assert (crash) when validating caused by using "Bad cache" data before it has been initialized. [RT #30025] A condition has been corrected where improper handling of zero-length RDATA could cause undesirable behavior, including termination of the named process. [RT #29644] New Features None Feature Changes BIND now recognizes the TLSA resource record type, created to support IETF DANE (DNS-based Authentication of Named Entities) [RT #28989] Bug Fixes Fixes the defect introduced by change #3314 that was causing failures when saving stub zones to disk (resulting in excessive CPU usage in some cases). [RT #29952] The locking strategy around the handling of iterative queries has been tuned to reduce unnecessary contention in a multi-threaded environment. (Note that this may not provide a measurable improvement over previous versions of BIND, but it corrects the performance impact of change 3309 / RT #27995) [RT #29239] Addresses a race condition that can cause named to to crash when the masters list for a zone is updated via rndc reload/reconfig [RT #26732] Fixes a race condition in zone.c that can cause named to crash during the processing of rndc delzone [RT #29028] Prevents a named segfault from resolver.c due to procedure fctx_finddone() not being thread-safe. [RT #27995] Uses hmctx, not mctx when freeing rbtdb->heaps to avoid triggering an assertion when flushing cache data. [RT #28571] Resolves inconsistencies in locating DNSSEC keys where zone names contain characters that require special mappings [RT #28600] A new flag -R has been added to queryperf for running tests using non-recursive queries. It also now builds correctly on MacOS version 10.7 (darwin) [RT #28565] Named no longer crashes if gssapi is enabled in named.conf but was not compiled into the binary [RT #28338] SDB now handles unexpected errors from back-end database drivers gracefully instead of exiting on an assert. [RT #28534] 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/supportisc. (c) 2001-2012 Internet Systems Consortium ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
BIND 9.8.3-P3 is now available
Introduction BIND 9.8.3-P3 is the latest production release of BIND 9.8. This document summarizes changes from BIND 9.8.2 to BIND 9.8.3-P3. Please see the CHANGES file in the source code release for a complete list of all changes. Download The latest versions of BIND 9 software can always be found on our web site at http://www.isc.org/downloads/all. There you will find additional information about each release, source code, and pre-compiled versions for Microsoft Windows operating systems. Support Product support information is available on http://www.isc.org/support for paid support options. Free support is provided by our user community via a mailing list. Information on all public email lists is available at https://lists.isc.org/mailman/listinfo. Security Fixes Prevents a named assert (crash) when queried for a record whose RDATA exceeds 65535 bytes. [RT #30416] Prevents a named assert (crash) when validating caused by using "Bad cache" data before it has been initialized. [RT #30025] A condition has been corrected where improper handling of zero-length RDATA could cause undesirable behavior, including termination of the named process. [RT #29644] New Features None Feature Changes BIND now recognizes the TLSA resource record type, created to support IETF DANE (DNS-based Authentication of Named Entities) [RT #28989] Bug Fixes Fixes the defect introduced by change #3314 that was causing failures when saving stub zones to disk (resulting in excessive CPU usage in some cases). [RT #29952] The locking strategy around the handling of iterative queries has been tuned to reduce unnecessary contention in a multi-threaded environment. (Note that this may not provide a measurable improvement over previous versions of BIND, but it corrects the performance impact of change 3309 / RT #27995) [RT #29239] Addresses a race condition that can cause named to to crash when the masters list for a zone is updated via rndc reload/reconfig [RT #26732] named-checkconf now correctly validates dns64 clients acl definitions. [RT #27631] Fixes a race condition in zone.c that can cause named to crash during the processing of rndc delzone [RT #29028] Prevents a named segfault from resolver.c due to procedure fctx_finddone() not being thread-safe. [RT #27995] Improves DNS64 reverse zone performance. [RT #28563] Adds wire format lookup method to sdb. [RT #28563] Uses hmctx, not mctx when freeing rbtdb->heaps to avoid triggering an assertion when flushing cache data. [RT #28571] Resolves inconsistencies in locating DNSSEC keys where zone names contain characters that require special mappings [RT #28600] A new flag -R has been added to queryperf for running tests using non-recursive queries. It also now builds correctly on MacOS version 10.7 (darwin) [RT #28565] Named no longer crashes if gssapi is enabled in named.conf but was not compiled into the binary [RT #28338] SDB now handles unexpected errors from back-end database drivers gracefully instead of exiting on an assert. [RT #28534] 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/supportisc. (c) 2001-2012 Internet Systems Consortium ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
ISC Security Advisory: A Specially Crafted Resource Record Could Cause named to Terminate
Note: This email advisory is provided for your information. The most up to date advisory information will always be at: https://kb.isc.org/article/AA-00778 please use this URL for the most up to date advisory information. --- CVE-2012-4244: A specially crafted Resource Record could cause named to terminate A nameserver can be caused to exit with a REQUIRE exception if it can be induced to load a specially crafted resource record. CVE: CVE-2012-4244 Document Version: 2.0 Posting date: 12 September 2012 Program Impacted: BIND Versions affected: 9.0.x -> 9.6.x, 9.4-ESV->9.4-ESV-R5-P1, 9.6-ESV->9.6-ESV-R7-P2, 9.7.0->9.7.6-P2, 9.8.0->9.8.3-P2, 9.9.0->9.9.1-P2 Severity: Critical Exploitable: Remotely Description: If a record with RDATA in excess of 65535 bytes is loaded into a nameserver, a subsequent query for that record will cause named to exit with an assertion failure. Please Note: Versions of BIND 9.4 and 9.5 are also affected, but these branches are beyond their "end of life" (EOL) and no longer receive testing or security fixes from ISC. For current information on which versions are actively supported, please see http://www.isc.org/software/bind/versions. Impact: This vulnerability can be exploited remotely against recursive servers by inducing them to query for records provided by an authoritative server. It affects authoritative servers if a zone containing this type of resource record is loaded from file or provided via zone transfer. CVSS Score: 7.8 CVSS Equation: (AV:N/AC:L/Au:N/C:N/I:N/A:C) For more information on the Common Vulnerability Scoring System and to obtain your specific environmental score please visit: http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2&vector=(AV:N/AC:L/Au:N/C:N/I:N/A:C) Workarounds: None are known at this time. Active exploits: No known active exploits. Solution: Upgrade to the patched version or new release most closely related to your current version of BIND. The patched versions (-P3) of BIND can be downloaded from http://www.isc.org/downloads/all. The new release versions will be available within the next week. BIND 9 version 9.7.7, 9.7.6-P3 BIND 9 version 9.6-ESV-R8, 9.6-ESV-R7-P3 BIND 9 version 9.8.4, 9.8.3-P3 BIND 9 version 9.9.2, 9.9.1-P3 Document Revision History: 1.0 - 4 Sept., 2012 Advance Notification to Phase 1 1.1 - 6 Sept. 2012 Corrected error in Description (65535 bytes) 1.2 - 11 Sept. 2012 Phase 2 & 3 notified 2.0 - 12 Sept. 2012 Phase 4 - Public Released Related Documents: See our BIND Security Matrix for a complete listing of Security Vulnerabilities and versions affected. If you'd like more information on our Forum or product support please visit www.isc.org/software/guild or www.isc.org/support. Do you still have questions? Questions regarding this advisory should go to security-offi...@isc.org Note: ISC patches only currently supported versions. When possible we indicate EOL versions affected. ISC Security Vulnerability Disclosure Policy: Details of our current security advisory policy and practice can be found here: https://www.isc.org/security-vulnerability-disclosure-policy The Knowledge Base article https://kb.isc.org/article/AA-00778 is the complete and official security advisory document. There is also a summary article located on our website and linking to here: https://www.isc.org/software/bind/advisories/cve-2012-4244 Legal Disclaimer: Internet Systems Consortium (ISC) is providing this notice on an "AS IS" basis. No warranty or guarantee of any kind is expressed in this notice and none should be implied. ISC expressly excludes and disclaims any warranties regarding this notice or materials referred to in this notice, including, without limitation, any implied warranty of merchantability, fitness for a particular purpose, absence of hidden defects, or of non-infringement. Your use or reliance on this notice or materials referred to in this notice is at your own risk. ISC may change this notice at any time. A stand-alone copy or paraphrase of the text of this document that omits the document URL is an uncontrolled copy. Uncontrolled copies may lack important information, be out of date, or contain factual errors. (c) 2001-2012 Internet Systems Consortium ___ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
