Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 96 insertions, 0 deletions

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+.. 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 9.18.19
+----------------------
+
+Security Fixes
+~~~~~~~~~~~~~~
+
+- Previously, sending a specially crafted message over the control
+  channel could cause the packet-parsing code to run out of available
+  stack memory, causing :iscman:`named` to terminate unexpectedly.
+  This has been fixed. (CVE-2023-3341)
+
+  ISC would like to thank Eric Sesterhenn from X41 D-Sec GmbH for
+  bringing this vulnerability to our attention. :gl:`#4152`
+
+- A flaw in the networking code handling DNS-over-TLS queries could
+  cause :iscman:`named` to terminate unexpectedly due to an assertion
+  failure under significant DNS-over-TLS query load. This has been
+  fixed. (CVE-2023-4236)
+
+  ISC would like to thank Robert Story from USC/ISI Root Server
+  Operations for bringing this vulnerability to our attention.
+  :gl:`#4242`
+
+Removed Features
+~~~~~~~~~~~~~~~~
+
+- The :any:`dnssec-must-be-secure` option has been deprecated and will
+  be removed in a future release. :gl:`#4263`
+
+Feature Changes
+~~~~~~~~~~~~~~~
+
+- If the ``server`` command is specified, :iscman:`nsupdate` now honors
+  the :option:`nsupdate -v` option for SOA queries by sending both the
+  UPDATE request and the initial query over TCP. :gl:`#1181`
+
+Bug Fixes
+~~~~~~~~~
+
+- The value of the If-Modified-Since header in the statistics channel
+  was not being correctly validated for its length, potentially allowing
+  an authorized user to trigger a buffer overflow. Ensuring the
+  statistics channel is configured correctly to grant access exclusively
+  to authorized users is essential (see the :any:`statistics-channels`
+  block definition and usage section). :gl:`#4124`
+
+  This issue was reported independently by Eric Sesterhenn of X41 D-Sec
+  GmbH and Cameron Whitehead.
+
+- The Content-Length header in the statistics channel was lacking proper
+  bounds checking. A negative or excessively large value could
+  potentially trigger an integer overflow and result in an assertion
+  failure. :gl:`#4125`
+
+  This issue was reported by Eric Sesterhenn of X41 D-Sec GmbH.
+
+- Several memory leaks caused by not clearing the OpenSSL error stack
+  were fixed. :gl:`#4159`
+
+  This issue was reported by Eric Sesterhenn of X41 D-Sec GmbH.
+
+- The introduction of ``krb5-subdomain-self-rhs`` and
+  ``ms-subdomain-self-rhs`` UPDATE policies accidentally caused
+  :iscman:`named` to return SERVFAIL responses to deletion requests for
+  non-existent PTR and SRV records. This has been fixed. :gl:`#4280`
+
+- The :any:`stale-refresh-time` feature was mistakenly disabled when the
+  server cache was flushed by :option:`rndc flush`. This has been fixed.
+  :gl:`#4278`
+
+- BIND's memory consumption has been improved by implementing dedicated
+  jemalloc memory arenas for sending buffers. This optimization ensures
+  that memory usage is more efficient and better manages the return of
+  memory pages to the operating system. :gl:`#4038`
+
+- Previously, partial writes in the TLS DNS code were not accounted for
+  correctly, which could have led to DNS message corruption. This has
+  been fixed. :gl:`#4255`
+
+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.