80 lines
2.7 KiB
ReStructuredText
80 lines
2.7 KiB
ReStructuredText
.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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..
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.. SPDX-License-Identifier: MPL-2.0
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..
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.. This Source Code Form is subject to the terms of the Mozilla Public
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.. License, v. 2.0. If a copy of the MPL was not distributed with this
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.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
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..
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.. See the COPYRIGHT file distributed with this work for additional
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.. information regarding copyright ownership.
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Notes for BIND 9.18.16
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----------------------
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Security Fixes
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~~~~~~~~~~~~~~
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- The overmem cleaning process has been improved, to prevent the cache from
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significantly exceeding the configured :any:`max-cache-size` limit.
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(CVE-2023-2828)
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ISC would like to thank Shoham Danino from Reichman University, Anat
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Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University,
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and Yuval Shavitt from Tel-Aviv University for bringing this vulnerability to
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our attention. :gl:`#4055`
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- A query that prioritizes stale data over lookup triggers a fetch to refresh
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the stale data in cache. If the fetch is aborted for exceeding the recursion
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quota, it was possible for :iscman:`named` to enter an infinite callback
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loop and crash due to stack overflow. This has been fixed. (CVE-2023-2911)
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:gl:`#4089`
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New Features
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~~~~~~~~~~~~
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- None.
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- The system test suite can now be executed with pytest (along with
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pytest-xdist for parallel execution). :gl:`#3978`
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Removed Features
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~~~~~~~~~~~~~~~~
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- TKEY mode 2 (Diffie-Hellman Exchanged Keying) is now deprecated, and
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will be removed in a future release. A warning will be logged when
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the ``tkey-dhkey`` option is used in ``named.conf``. :gl:`#3905`
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Feature Changes
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~~~~~~~~~~~~~~~
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- None.
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Bug Fixes
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~~~~~~~~~
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- BIND could get stuck on reconfiguration when a `listen` statement
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for HTTP is removed from the configuration. That has been fixed.
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:gl:`#4071`
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- It could happen that after the :any:`stale-answer-client-timeout` duration,
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a delegation from cache was returned to the client. This has now been fixed.
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:gl:`#3950`
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- BIND could allocate too big buffers when sending data via
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stream-based DNS transports, leading to increased memory usage.
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This has been fixed. :gl:`#4038`
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- When the :any:`stale-answer-enable` option was enabled and the
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:any:`stale-answer-client-timeout` option was enabled and larger than 0,
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``named`` was taking two places from the :any:`clients-per-query` limit for
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each client and was failing to gradually auto-tune its value, as configured.
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This has been fixed. :gl:`#4074`
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Known Issues
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~~~~~~~~~~~~
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- There are no new known issues with this release. See :ref:`above
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<relnotes_known_issues>` for a list of all known issues affecting this
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BIND 9 branch.
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