1497bf0b8Schristos.. Copyright (C) Internet Systems Consortium, Inc. ("ISC") 2497bf0b8Schristos.. 3497bf0b8Schristos.. SPDX-License-Identifier: MPL-2.0 4497bf0b8Schristos.. 5497bf0b8Schristos.. This Source Code Form is subject to the terms of the Mozilla Public 6497bf0b8Schristos.. License, v. 2.0. If a copy of the MPL was not distributed with this 7497bf0b8Schristos.. file, you can obtain one at https://mozilla.org/MPL/2.0/. 8497bf0b8Schristos.. 9497bf0b8Schristos.. See the COPYRIGHT file distributed with this work for additional 10497bf0b8Schristos.. information regarding copyright ownership. 11497bf0b8Schristos 12497bf0b8SchristosNotes for BIND 9.16.33 13497bf0b8Schristos---------------------- 14497bf0b8Schristos 15497bf0b8SchristosSecurity Fixes 16497bf0b8Schristos~~~~~~~~~~~~~~ 17497bf0b8Schristos 18497bf0b8Schristos- Previously, there was no limit to the number of database lookups 19497bf0b8Schristos performed while processing large delegations, which could be abused to 20497bf0b8Schristos severely impact the performance of :iscman:`named` running as a 21497bf0b8Schristos recursive resolver. This has been fixed. (CVE-2022-2795) 22497bf0b8Schristos 23497bf0b8Schristos ISC would like to thank Yehuda Afek from Tel-Aviv University and Anat 24497bf0b8Schristos Bremler-Barr & Shani Stajnrod from Reichman University for bringing 25497bf0b8Schristos this vulnerability to our attention. :gl:`#3394` 26497bf0b8Schristos 27497bf0b8Schristos- :iscman:`named` running as a resolver with the 28497bf0b8Schristos ``stale-answer-client-timeout`` option set to ``0`` could crash with 29497bf0b8Schristos an assertion failure, when there was a stale CNAME in the cache for 30497bf0b8Schristos the incoming query. This has been fixed. (CVE-2022-3080) :gl:`#3517` 31497bf0b8Schristos 32497bf0b8Schristos- A memory leak was fixed that could be externally triggered in the 33497bf0b8Schristos DNSSEC verification code for the ECDSA algorithm. (CVE-2022-38177) 34497bf0b8Schristos :gl:`#3487` 35497bf0b8Schristos 36497bf0b8Schristos- Memory leaks were fixed that could be externally triggered in the 37497bf0b8Schristos DNSSEC verification code for the EdDSA algorithm. (CVE-2022-38178) 38497bf0b8Schristos :gl:`#3487` 39497bf0b8Schristos 40497bf0b8SchristosFeature Changes 41497bf0b8Schristos~~~~~~~~~~~~~~~ 42497bf0b8Schristos 43497bf0b8Schristos- Response Rate Limiting (RRL) code now treats all QNAMEs that are 44497bf0b8Schristos subject to wildcard processing within a given zone as the same name, 45497bf0b8Schristos to prevent circumventing the limits enforced by RRL. :gl:`#3459` 46497bf0b8Schristos 47497bf0b8Schristos- Zones using ``dnssec-policy`` now require dynamic DNS or 48497bf0b8Schristos ``inline-signing`` to be configured explicitly. :gl:`#3381` 49497bf0b8Schristos 50497bf0b8Schristos- A backward-compatible approach was implemented for encoding 51497bf0b8Schristos internationalized domain names (IDN) in :iscman:`dig` and converting 52497bf0b8Schristos the domain to IDNA2008 form; if that fails, BIND tries an IDNA2003 53497bf0b8Schristos conversion. :gl:`#3485` 54497bf0b8Schristos 55497bf0b8SchristosBug Fixes 56497bf0b8Schristos~~~~~~~~~ 57497bf0b8Schristos 58497bf0b8Schristos- A serve-stale bug was fixed, where BIND would try to return stale data 59497bf0b8Schristos from cache for lookups that received duplicate queries or queries that 60497bf0b8Schristos would be dropped. This bug resulted in premature SERVFAIL responses, 61497bf0b8Schristos and has now been resolved. :gl:`#2982` 62*4bcbe0a3Schristos 63*4bcbe0a3SchristosKnown Issues 64*4bcbe0a3Schristos~~~~~~~~~~~~ 65*4bcbe0a3Schristos 66*4bcbe0a3Schristos- There are no new known issues with this release. See :ref:`above 67*4bcbe0a3Schristos <relnotes_known_issues>` for a list of all known issues affecting this 68*4bcbe0a3Schristos BIND 9 branch. 69