1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
.. Copyright (C) Internet Systems Consortium, Inc. ("ISC")
..
.. SPDX-License-Identifier: MPL-2.0
..
.. This Source Code Form is subject to the terms of the Mozilla Public
.. License, v. 2.0. If a copy of the MPL was not distributed with this
.. file, you can obtain one at https://mozilla.org/MPL/2.0/.
..
.. See the COPYRIGHT file distributed with this work for additional
.. information regarding copyright ownership.
Notes for BIND 9.18.16
----------------------
Security Fixes
~~~~~~~~~~~~~~
- The overmem cleaning process has been improved, to prevent the cache from
significantly exceeding the configured :any:`max-cache-size` limit.
(CVE-2023-2828)
ISC would like to thank Shoham Danino from Reichman University, Anat
Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University,
and Yuval Shavitt from Tel-Aviv University for bringing this vulnerability to
our attention. :gl:`#4055`
- A query that prioritizes stale data over lookup triggers a fetch to refresh
the stale data in cache. If the fetch is aborted for exceeding the recursion
quota, it was possible for :iscman:`named` to enter an infinite callback
loop and crash due to stack overflow. This has been fixed. (CVE-2023-2911)
:gl:`#4089`
New Features
~~~~~~~~~~~~
- The system test suite can now be executed with pytest (along with
pytest-xdist for parallel execution). :gl:`#3978`
Removed Features
~~~~~~~~~~~~~~~~
- TKEY mode 2 (Diffie-Hellman Exchanged Keying) is now deprecated, and
will be removed in a future release. A warning will be logged when
the :any:`tkey-dhkey` option is used in ``named.conf``. :gl:`#3905`
Bug Fixes
~~~~~~~~~
- BIND could get stuck on reconfiguration when a :any:`listen-on`
statement for HTTP is removed from the configuration. That has been
fixed. :gl:`#4071`
- Previously, it was possible for a delegation from cache to be returned
to the client after the :any:`stale-answer-client-timeout` duration.
This has been fixed. :gl:`#3950`
- BIND could allocate too big buffers when sending data via
stream-based DNS transports, leading to increased memory usage.
This has been fixed. :gl:`#4038`
- When the :any:`stale-answer-enable` option was enabled and the
:any:`stale-answer-client-timeout` option was enabled and larger than
0, :iscman:`named` previously allocated two slots from the
:any:`clients-per-query` limit for each client and failed to gradually
auto-tune its value, as configured. This has been fixed. :gl:`#4074`
Known Issues
~~~~~~~~~~~~
- There are no new known issues with this release. See :ref:`above
<relnotes_known_issues>` for a list of all known issues affecting this
BIND 9 branch.
|
