From 45b4fac602bef294a8a58e9b2e5e2220aef6f8e2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20K=C4=99pie=C5=84?= Date: Thu, 2 Oct 2025 18:13:26 +0200 Subject: [PATCH] Prepare release notes for BIND 9.20.14 --- doc/arm/notes.rst | 1 + doc/notes/notes-9.20.14.rst | 107 ++++++++++++++++++++++++++++++++++++ 2 files changed, 108 insertions(+) create mode 100644 doc/notes/notes-9.20.14.rst diff --git a/doc/arm/notes.rst b/doc/arm/notes.rst index 65ea30de4f..17523cb87b 100644 --- a/doc/arm/notes.rst +++ b/doc/arm/notes.rst @@ -45,6 +45,7 @@ The list of known issues affecting the latest version in the 9.20 branch can be found at https://gitlab.isc.org/isc-projects/bind9/-/wikis/Known-Issues-in-BIND-9.20 +.. include:: ../notes/notes-9.20.14.rst .. include:: ../notes/notes-9.20.13.rst .. include:: ../notes/notes-9.20.12.rst .. include:: ../notes/notes-9.20.11.rst diff --git a/doc/notes/notes-9.20.14.rst b/doc/notes/notes-9.20.14.rst new file mode 100644 index 0000000000..f200b4e854 --- /dev/null +++ b/doc/notes/notes-9.20.14.rst @@ -0,0 +1,107 @@ +.. 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 9.20.14 +---------------------- + +Security Fixes +~~~~~~~~~~~~~~ + +- [CVE-2025-8677] DNSSEC validation fails if matching but invalid DNSKEY + is found. + + Previously, if a matching but cryptographically invalid key was + encountered during DNSSEC validation, the key was skipped and not + counted towards validation failures. :iscman:`named` now treats such + DNSSEC keys as hard failures and the DNSSEC validation fails + immediately, instead of continuing with the next DNSKEYs in the RRset. + + ISC would like to thank Zuyao Xu and Xiang Li from the All-in-One + Security and Privacy Laboratory at Nankai University for bringing this + vulnerability to our attention. :gl:`#5343` + +- [CVE-2025-40778] Address various spoofing attacks. + + Previously, several issues could be exploited to poison a DNS cache + with spoofed records for zones which were not DNSSEC-signed or if the + resolver was configured to not do DNSSEC validation. These issues were + assigned CVE-2025-40778 and have now been fixed. + + As an additional layer of protection, :iscman:`named` no longer + accepts DNAME records or extraneous NS records in the AUTHORITY + section unless these are received via spoofing-resistant transport + (TCP, UDP with DNS cookies, TSIG, or SIG(0)). + + ISC would like to thank Yuxiao Wu, Yunyi Zhang, Baojun Liu, and Haixin + Duan from Tsinghua University for bringing this vulnerability to our + attention. :gl:`#5414` + +- [CVE-2025-40780] Cache-poisoning due to weak pseudo-random number + generator. + + It was discovered during research for an upcoming academic paper that + a xoshiro128\*\* internal state can be recovered by an external 3rd + party, allowing the prediction of UDP ports and DNS IDs in outgoing + queries. This could lead to an attacker spoofing the DNS answers with + great efficiency and poisoning the DNS cache. + + The internal random generator has been changed to a cryptographically + secure pseudo-random generator. + + ISC would like to thank Prof. Amit Klein and Omer Ben Simhon from + Hebrew University of Jerusalem for bringing this vulnerability to our + attention. :gl:`#5484` + +New Features +~~~~~~~~~~~~ + +- Add dnssec-policy keys configuration check to named-checkconf. + + A new option `-k` is added to `named-checkconf` that allows checking + the `dnssec-policy` `keys` configuration against the configured key + stores. If the found key files are not in sync with the given + `dnssec-policy`, the check will fail. + + This is useful to run before migrating to `dnssec-policy`. :gl:`#5486` + +Bug Fixes +~~~~~~~~~ + +- Use signer name when disabling DNSSEC algorithms. + + ``disable-algorithms`` could cause DNSSEC validation failures when the + parent zone was signed with the algorithms that were being disabled + for the child zone. This has been fixed; `disable-algorithms` now + works on a whole-of-zone basis. + + If the zone's name is at or below the ``disable-algorithms`` name the + algorithm is disabled for that zone, using deepest match when there + are multiple ``disable-algorithms`` clauses. :gl:`#5165` + +- Rndc sign during ZSK rollover will now replace signatures. + + When performing a ZSK rollover, if the new DNSKEY is omnipresent, the + :option:`rndc sign` command now signs the zone completely with the + successor key, replacing all zone signatures from the predecessor key + with new ones. :gl:`#5483` + +- Missing DNSSEC information when CD bit is set in query. + + The RRSIGs for glue records were not being cached correctly for CD=1 + queries. This has been fixed. :gl:`#5502` + +- Preserve cache when reload fails and reload the server again. + + Fixes an issue where failing to reconfigure/reload the server would + prevent to preserved the views caches on the subsequent server + reconfiguration/reload. :gl:`#5523` + +