Import bind-9.18.24 (previous was 9.16.42)

--- 9.18.24 released ---

6343. [bug] Fix case insensitive setting for isc_ht hashtable.
[GL #4568]

--- 9.18.23 released ---

6322. [security] Specific DNS answers could cause a denial-of-service
condition due to DNS validation taking a long time.
(CVE-2023-50387) [GL #4424]

6321. [security] Change 6315 inadvertently introduced regressions that
could cause named to crash. [GL #4234]

6320. [bug] Under some circumstances, the DoT code in client
mode could process more than one message at a time when
that was not expected. That has been fixed. [GL #4487]

--- 9.18.22 released ---

6319. [func] Limit isc_task_send() overhead for RBTDB tree pruning.
[GL #4383]

6317. [security] Restore DNS64 state when handling a serve-stale timeout.
(CVE-2023-5679) [GL #4334]

6316. [security] Specific queries could trigger an assertion check with
nxdomain-redirect enabled. (CVE-2023-5517) [GL #4281]

6315. [security] Speed up parsing of DNS messages with many different
names. (CVE-2023-4408) [GL #4234]

6314. [bug] Address race conditions in dns_tsigkey_find().
[GL #4182]

6312. [bug] Conversion from NSEC3 signed to NSEC signed could
temporarily put the zone into a state where it was
treated as unsigned until the NSEC chain was built.
Additionally conversion from one set of NSEC3 parameters
to another could also temporarily put the zone into a
state where it was treated as unsigned until the new
NSEC3 chain was built. [GL #1794] [GL #4495]

6310. [bug] Memory leak in zone.c:sign_zone. When named signed a
zone it could leak dst_keys due to a misplaced
'continue'. [GL #4488]

6306. [func] Log more details about the cause of "not exact" errors.
[GL #4500]

6304. [bug] The wrong time was being used to determine what RRSIGs
where to be generated when dnssec-policy was in use.
[GL #4494]

6302. [func] The "trust-anchor-telemetry" statement is no longer
marked as experimental. This silences a relevant log
message that was emitted even when the feature was
explicitly disabled. [GL #4497]

6300. [bug] Fix statistics export to use full 64 bit signed numbers
instead of truncating values to unsigned 32 bits.
[GL #4467]

6299. [port] NetBSD has added 'hmac' to libc which collides with our
use of 'hmac'. [GL #4478]

--- 9.18.21 released ---

6297. [bug] Improve LRU cleaning behaviour. [GL #4448]

6296. [func] The "resolver-nonbackoff-tries" and
"resolver-retry-interval" options are deprecated;
a warning will be logged if they are used. [GL #4405]

6294. [bug] BIND might sometimes crash after startup or
re-configuration when one 'tls' entry is used multiple
times to connect to remote servers due to initialisation
attempts from contexts of multiple threads. That has
been fixed. [GL #4464]

6290. [bug] Dig +yaml will now report "no servers could be reached"
also for UDP setup failure when no other servers or
tries are left. [GL #1229]

6287. [bug] Recognize escapes when reading the public key from file.
[GL !8502]

6286. [bug] Dig +yaml will now report "no servers could be reached"
on TCP connection failure as well as for UDP timeouts.
[GL #4396]

6282. [func] Deprecate AES-based DNS cookies. [GL #4421]

--- 9.18.20 released ---

6280. [bug] Fix missing newlines in the output of "rndc nta -dump".
[GL !8454]

6277. [bug] Take into account local authoritative zones when
falling back to serve-stale. [GL #4355]

6275. [bug] Fix assertion failure when using lock-file configuration
option together -X argument to named. [GL #4386]

6274. [bug] The 'lock-file' file was being removed when it
shouldn't have been making it ineffective if named was
started 3 or more times. [GL #4387]

6271. [bug] Fix a shutdown race in dns__catz_update_cb(). [GL #4381]

6269. [maint] B.ROOT-SERVERS.NET addresses are now 170.247.170.2 and
2801:1b8:10::b. [GL #4101]

6267. [func] The timeouts for resending zone refresh queries over UDP
were lowered to enable named to more quickly determine
that a primary is down. [GL #4260]

6265. [bug] Don't schedule resign operations on the raw version
of an inline-signing zone. [GL #4350]

6261. [bug] Fix a possible assertion failure on an error path in
resolver.c:fctx_query(), when using an uninitialized
link. [GL #4331]

6254. [cleanup] Add semantic patch to do an explicit cast from char
to unsigned char in ctype.h class of functions.
[GL #4327]

6252. [test] Python system tests have to be executed by invoking
pytest directly. Executing them with the legacy test
runner is no longer supported. [GL #4250]

6250. [bug] The wrong covered value was being set by
dns_ncache_current for RRSIG records in the returned
rdataset structure. This resulted in TYPE0 being
reported as the covered value of the RRSIG when dumping
the cache contents. [GL #4314]

--- 9.18.19 released ---

6246. [security] Fix use-after-free error in TLS DNS code when sending
data. (CVE-2023-4236) [GL #4242]

6245. [security] Limit the amount of recursion that can be performed
by isccc_cc_fromwire. (CVE-2023-3341) [GL #4152]

6244. [bug] Adjust log levels on malformed messages to NOTICE when
transferring in a zone. [GL #4290]

6241. [bug] Take into account the possibility of partial TLS writes
in TLS DNS code. That helps to prevent DNS messages
corruption on long DNS over TLS streams. [GL #4255]

6240. [bug] Use dedicated per-worker thread jemalloc memory
arenas for send buffers allocation to reduce memory
consumption and avoid lock contention. [GL #4038]

6239. [func] Deprecate the 'dnssec-must-be-secure' option.
[GL #3700]

6237. [bug] Address memory leaks due to not clearing OpenSSL error
stack. [GL #4159]

6235. [doc] Clarify BIND 9 time formats. [GL #4266]

6234. [bug] Restore stale-refresh-time value after flushing the
cache. [GL #4278]

6232. [bug] Following the introduction of krb5-subdomain-self-rhs
and ms-subdomain-self-rhs update rules, removal of
nonexistent PTR and SRV records via UPDATE could fail.
[GL #4280]

6231. [func] Make nsupdate honor -v for SOA requests if the server
is specified. [GL #1181]

6230. [bug] Prevent an unnecessary query restart if a synthesized
CNAME target points to the CNAME owner. [GL #3835]

6227. [bug] Check the statistics-channel HTTP Content-length
to prevent negative or overflowing values from
causing a crash. [GL #4125]

6224. [bug] Check the If-Modified-Since value length to prevent
out-of-bounds write. [GL #4124]

--- 9.18.18 released ---

6220. [func] Deprecate the 'dialup' and 'heartbeat-interval'
options. [GL #3700]

6219. [bug] Ignore 'max-zone-ttl' on 'dnssec-policy insecure'.
[GL #4032]

6215. [protocol] Return REFUSED to GSS-API TKEY requests if GSS-API
support is not configured. [GL #4225]

6213. [bug] Mark a primary server as temporarily unreachable if the
TCP connection attempt times out. [GL #4215]

6212. [bug] Don't process detach and close netmgr events when
the netmgr has been paused. [GL #4200]

--- 9.18.17 released ---

6206. [bug] Add shutdown checks in dns_catz_dbupdate_callback() to
avoid a race with dns_catz_shutdown_catzs(). [GL #4171]

6205. [bug] Restore support to read legacy HMAC-MD5 K file pairs.
[GL #4154]

6204. [bug] Use NS records for relaxed QNAME-minimization mode.
This reduces the number of queries named makes when
resolving, as it allows the non-existence of NS RRsets
at non-referral nodes to be cached in addition to the
referrals that are normally cached. [GL #3325]

6200. [bug] Fix nslookup erroneously reporting a timeout when the
input is delayed. [GL #4044]

6199. [bug] Improve HTTP Connection: header protocol conformance
in the statistics channel. [GL #4126]

6198. [func] Remove the holes in the isc_result_t enum to compact
the isc_result tables. [GL #4149]

6197. [bug] Fix a data race between the dns_zone and dns_catz
modules when registering/unregistering a database
update notification callback for a catalog zone.
[GL #4132]

6196. [cleanup] Report "permission denied" instead of "unexpected error"
when trying to update a zone file on a read-only file
system. Thanks to Midnight Veil. [GL #4134]

6193. [bug] Fix a catz db update notification callback registration
logic error, which could crash named when receiving an
AXFR update for a catalog zone while the previous update
process of the catalog zone was already running.
[GL #4136]

6166. [func] Retry without DNS COOKIE on FORMERR if it appears that
the FORMERR was due to the presence of a DNS COOKIE
option. [GL #4049]

Import bind-9.16.20

--- 9.16.20 released ---

5689. [security] An assertion failure occurred when named attempted to
send a UDP packet that exceeded the MTU size, if
Response Rate Limiting (RRL) was enabled.
(CVE-2021-25218) [GL #2856]

5688. [bug] Zones using KASP and inline-signed zones failed to apply
changes from the unsigned zone to the signed zone under
certain circumstances. This has been fixed. [GL #2735]

5687. [bug] "rndc reload <zonename>" could trigger a redundant
reload for an inline-signed zone whose zone file was not
modified since the last "rndc reload". This has been
fixed. [GL #2855]

5686. [func] The number of internal data structures allocated for
each zone was reduced. [GL #2829]

5685. [bug] named failed to check the opcode of responses when
performing zone refreshes, stub zone updates, and UPDATE
forwarding. This has been fixed. [GL #2762]

5682. [bug] Some changes to "zone-statistics" settings were not
properly processed by "rndc reconfig". This has been
fixed. [GL #2820]

5681. [func] Relax the checks in the dns_zone_cdscheck() function to
allow CDS and CDNSKEY records in the zone that do not
match an existing DNSKEY record, as long as the
algorithm matches. This allows a clean rollover from one
provider to another in a multi-signer DNSSEC
configuration. [GL #2710]

5679. [func] Thread affinity is no longer set. [GL #2822]

5678. [bug] The "check DS" code failed to release all resources upon
named shutdown when a refresh was in progress. This has
been fixed. [GL #2811]

5672. [bug] Authentication of rndc messages could fail if a
"controls" statement was configured with multiple key
algorithms for the same listener. This has been fixed.
[GL #2756]

--- 9.16.19 released ---

5671. [bug] A race condition could occur where two threads were
competing for the same set of key file locks, leading to
a deadlock. This has been fixed. [GL #2786]

5670. [bug] create_keydata() created an invalid placeholder keydata
record upon a refresh failure, which prevented the
database of managed keys from subsequently being read
back. This has been fixed. [GL #2686]

5669. [func] KASP support was extended with the "check DS" feature.
Zones with "dnssec-policy" and "parental-agents"
configured now check for DS presence and can perform
automatic KSK rollovers. [GL #1126]

5668. [bug] Rescheduling a setnsec3param() task when a zone failed
to load on startup caused a hang on shutdown. This has
been fixed. [GL #2791]

5667. [bug] The configuration-checking code failed to account for
the inheritance rules of the "dnssec-policy" option.
This has been fixed. [GL #2780]

5666. [doc] The safe "edns-udp-size" value was tweaked to match the
probing value from BIND 9.16 for better compatibility.
[GL #2183]

5665. [bug] If nsupdate sends an SOA request and receives a REFUSED
response, it now fails over to the next available
server. [GL #2758]

5664. [func] For UDP messages larger than the path MTU, named now
sends an empty response with the TC (TrunCated) bit set.
In addition, setting the DF (Don't Fragment) flag on
outgoing UDP sockets was re-enabled. [GL #2790]

5662. [bug] Views with recursion disabled are now configured with a
default cache size of 2 MB unless "max-cache-size" is
explicitly set. This prevents cache RBT hash tables from
being needlessly preallocated for such views. [GL #2777]

5661. [bug] Change 5644 inadvertently introduced a deadlock: when
locking the key file mutex for each zone structure in a
different view, the "in-view" logic was not considered.
This has been fixed. [GL #2783]

5658. [bug] Increasing "max-cache-size" for a running named instance
(using "rndc reconfig") did not cause the hash tables
used by cache databases to be grown accordingly. This
has been fixed. [GL #2770]

5655. [bug] Signed, insecure delegation responses prepared by named
either lacked the necessary NSEC records or contained
duplicate NSEC records when both wildcard expansion and
CNAME chaining were required to prepare the response.
This has been fixed. [GL #2759]

5653. [bug] A bug that caused the NSEC3 salt to be changed on every
restart for zones using KASP has been fixed. [GL #2725]

--- 9.16.18 released ---

5660. [bug] The configuration-checking code failed to account for
the inheritance rules of the "key-directory" option.
[GL #2778]

5659. [bug] When preparing DNS responses, named could replace the
letters 'W' (uppercase) and 'w' (lowercase) with '\000'.
This has been fixed. [GL #2779]

--- 9.16.17 released ---

5652. [bug] A copy-and-paste error in change 5584 caused the
IP_DONTFRAG socket option to be enabled instead of
disabled. This has been fixed. [GL #2746]

5651. [func] Refactor zone dumping to be processed asynchronously via
the uv_work_t thread pool API. [GL #2732]

5650. [bug] Prevent a crash that could occur if serve-stale was
enabled and a prefetch was triggered during a query
restart. [GL #2733]

5649. [bug] If a query was answered with stale data on a server with
DNS64 enabled, an assertion could occur if a non-stale
answer arrived afterward. [GL #2731]

5648. [bug] The calculation of the estimated IXFR transaction size
in dns_journal_iter_init() was invalid. [GL #2685]

5644. [bug] Fix a race condition in reading and writing key files
for zones using KASP and configured in multiple views.
[GL #1875]

5643. [cleanup] "make install" no longer creates an empty
${localstatedir}/run directory. [GL #2709]

5642. [bug] Zones which are configured in multiple views with
different values set for "dnssec-policy" and with
identical values set for "key-directory" are now
detected and treated as a configuration error.
[GL #2463]

5641. [bug] Address a potential memory leak in
dst_key_fromnamedfile(). [GL #2689]

5639. [bug] Check that the first and last SOA record of an AXFR are
consistent. [GL #2528]

5638. [bug] Improvements related to network manager/task manager
integration:
- isc_managers_create() and isc_managers_destroy()
functions were added to handle setup and teardown of
netmgr, taskmgr, timermgr, and socketmgr, since these
require a precise order of operations now.
- Event queue processing is now quantized to prevent
infinite looping.
- The netmgr can now be paused from within a netmgr
thread.
- Deadlocks due to a conflict between netmgr's
pause/resume and listen/stoplistening operations were
fixed.
[GL #2654]

5633. [doc] The "inline-signing" option was incorrectly described as
being inherited from the "options"/"view" levels and was
incorrectly accepted at those levels without effect.
This has been fixed. [GL #2536]

5624. [func] Task manager events are now processed inside network
manager loops. The task manager no longer needs its own
set of worker threads, which improves resolver
performance. [GL #2638]

--- 9.16.16 released ---

5637. [func] Change the default value of the "max-ixfr-ratio" option
to "unlimited". [GL #2671]

5636. [bug] named and named-checkconf did not report an error when
multiple zones with the "dnssec-policy" option set were
using the same zone file. This has been fixed.
[GL #2603]

5635. [bug] Journal compaction could fail when a journal with
invalid transaction headers was not detected at startup.
This has been fixed. [GL #2670]

5634. [bug] If "dnssec-policy" was active and a private key file was
temporarily offline during a rekey event, named could
incorrectly introduce replacement keys and break a
signed zone. This has been fixed. [GL #2596]

5633. [doc] The "inline-signing" option was incorrectly described as
being inherited from the "options"/"view" levels and was
incorrectly accepted at those levels without effect.
This has been fixed. [GL #2536]

5632. [func] Add a new built-in KASP, "insecure", which is used to
transition a zone from a signed to an unsigned state.
The existing built-in KASP "none" should no longer be
used to unsign a zone. [GL #2645]

5631. [protocol] Update the implementation of the ZONEMD RR type to match
RFC 8976. [GL #2658]

5630. [func] Treat DNSSEC responses containing NSEC3 records with
iteration counts greater than 150 as insecure.
[GL #2445]

5629. [func] Reduce the maximum supported number of NSEC3 iterations
that can be configured for a zone to 150. [GL #2642]

5627. [bug] RRSIG(SOA) RRsets placed anywhere other than at the zone
apex were triggering infinite resigning loops. This has
been fixed. [GL #2650]

5626. [bug] When generating zone signing keys, KASP now also checks
for key ID conflicts among newly created keys, rather
than just between new and existing ones. [GL #2628]

5625. [bug] A deadlock could occur when multiple "rndc addzone",
"rndc delzone", and/or "rndc modzone" commands were
invoked simultaneously for different zones. This has
been fixed. [GL #2626]

5622. [cleanup] The lib/samples/ directory has been removed, as export
versions of libraries are no longer maintained.
[GL !4835]

5619. [protocol] Implement draft-vandijk-dnsop-nsec-ttl, updating the
protocol such that NSEC(3) TTL values are set to the
minimum of the SOA MINIMUM value or the SOA TTL.
[GL #2347]

5618. [bug] Change 5149 introduced some inconsistencies in the way
record TTLs were presented in cache dumps. These
inconsistencies have been eliminated. [GL #389]
[GL #2289]

--- 9.16.12 released ---

5578. [protocol] Make "check-names" accept A records below "_spf",
"_spf_rate", and "_spf_verify" labels in order to cater
for the "exists" SPF mechanism specified in RFC 7208
section 5.7 and appendix D.1. [GL #2377]

5577. [bug] Fix the "three is a crowd" key rollover bug in KASP by
correctly implementing Equation (2) of the "Flexible and
Robust Key Rollover" paper. [GL #2375]

5575. [bug] When migrating to KASP, BIND 9 considered keys with the
"Inactive" and/or "Delete" timing metadata to be
possible active keys. This has been fixed. [GL #2406]

5572. [bug] Address potential double free in generatexml().
[GL #2420]

5571. [bug] named failed to start when its configuration included a
zone with a non-builtin "allow-update" ACL attached.
[GL #2413]

5570. [bug] Improve performance of the DNSSEC verification code by
reducing the number of repeated calls to
dns_dnssec_keyfromrdata(). [GL #2073]

5569. [bug] Emit useful error message when "rndc retransfer" is
applied to a zone of inappropriate type. [GL #2342]

5568. [bug] Fixed a crash in "dnssec-keyfromlabel" when using ECDSA
keys. [GL #2178]

5567. [bug] Dig now reports unknown dash options while pre-parsing
the options. This prevents "-multi" instead of "+multi"
from reporting memory usage before ending option parsing
with "Invalid option: -lti". [GL #2403]

5566. [func] Add "stale-answer-client-timeout" option, which is the
amount of time a recursive resolver waits before
attempting to answer the query using stale data from
cache. [GL #2247]

5565. [func] The SONAMEs for BIND 9 libraries now include the current
BIND 9 version number, in an effort to tightly couple
internal libraries with a specific release. [GL #2387]

5562. [security] Fix off-by-one bug in ISC SPNEGO implementation.
(CVE-2020-8625) [GL #2354]

5561. [bug] KASP incorrectly set signature validity to the value of
the DNSKEY signature validity. This is now fixed.
[GL #2383]

5560. [func] The default value of "max-stale-ttl" has been changed
from 12 hours to 1 day and the default value of
"stale-answer-ttl" has been changed from 1 second to 30
seconds, following RFC 8767 recommendations. [GL #2248]

5456. [func] Added "primaries" as a synonym for "masters" in
named.conf, and "primary-only" as a synonym for
"master-only" in the parameters to "notify", to bring
terminology up-to-date with RFC 8499. [GL #1948]

5362. [func] Limit the size of IXFR responses so that AXFR will
be used instead if it would be smaller. This is
controlled by the "max-ixfr-ratio" option, which
is a percentage representing the ratio of IXFR size
to the size of the entire zone. This value cannot
exceed 100%, which is the default. [GL #1515]

--- 9.16.11 released ---

5559. [bug] The --with-maxminddb=PATH form of the build-time option
enabling support for libmaxminddb was not working
correctly. This has been fixed. [GL #2366]

5557. [bug] Prevent RBTDB instances from being destroyed by multiple
threads at the same time. [GL #2317]

5556. [bug] Further tweak newline printing in dnssec-signzone and
dnssec-verify. [GL #2359]

5555. [bug] server->reload_status was not properly initialized.
[GL #2361]

5554. [bug] dnssec-signzone and dnssec-verify were missing newlines
between log messages. [GL #2359]

5553. [bug] When reconfiguring named, removing "auto-dnssec" did not
turn off DNSSEC maintenance. [GL #2341]

5552. [func] When switching to "dnssec-policy none;", named now
permits a safe transition to insecure mode and publishes
the CDS and CDNSKEY DELETE records, as described in RFC
8078. [GL #1750]

5551. [bug] named no longer attempts to assign threads to CPUs
outside the CPU affinity set. Thanks to Ole Bj��rn
Hessen. [GL #2245]

5550. [func] dnssec-signzone and named now log a warning when falling
back to the "increment" SOA serial method. [GL #2058]

5545. [func] OS support for load-balanced sockets is no longer
required to receive incoming queries in multiple netmgr
threads. [GL #2137]

5543. [bug] Fix UDP performance issues caused by making netmgr
callbacks asynchronous-only. [GL #2320]

5542. [bug] Refactor netmgr. [GL #1920] [GL #2034] [GL #2061]
[GL #2194] [GL #2221] [GL #2266] [GL #2283] [GL #2318]
[GL #2321]

--- 9.16.10 released ---

5544. [func] Restore the default value of "nocookie-udp-size" to 4096
bytes. [GL #2250]

5541. [func] Adjust the "max-recursion-queries" default from 75 to
100. [GL #2305]

5540. [port] Fix building with native PKCS#11 support for AEP Keyper.
[GL #2315]

5539. [bug] Tighten handling of missing DNS COOKIE responses over
UDP by falling back to TCP. [GL #2275]

5538. [func] Add NSEC3 support to KASP. A new option for
"dnssec-policy", "nsec3param", can be used to set the
desired NSEC3 parameters. NSEC3 salt collisions are
automatically prevented during resalting. Salt
generation is now logged with zone context. [GL #1620]

5534. [bug] The CNAME synthesized from a DNAME was incorrectly
followed when the QTYPE was CNAME or ANY. [GL #2280]

--- 9.16.9 released ---

5533. [func] Add the "stale-refresh-time" option, a time window that
starts after a failed lookup, during which a stale RRset
is served directly from cache before a new attempt to
refresh it is made. [GL #2066]

5530. [bug] dnstap did not capture responses to forwarded UPDATE
requests. [GL #2252]

5527. [bug] A NULL pointer dereference occurred when creating an NTA
recheck query failed. [GL #2244]

5525. [bug] Change 5503 inadvertently broke cross-compilation by
replacing a call to AC_LINK_IFELSE() with a call to
AC_RUN_IFELSE() in configure.ac. This has been fixed,
making cross-compilation possible again. [GL #2237]

5523. [bug] The initial lookup in a zone transitioning to/from a
signed state could fail if the DNSKEY RRset was not
found. [GL #2236]

5522. [bug] Fixed a race/NULL dereference in TCPDNS send. [GL #2227]

5520. [bug] Fixed a number of shutdown races, reference counting
errors, and spurious log messages that could occur
in the network manager. [GL #2221]

5518. [bug] Stub zones now work correctly with primary servers using
"minimal-responses yes". [GL #1736]

5517. [bug] Do not treat UV_EOF as a TCP4RecvErr or a TCP6RecvErr.
[GL #2208]

--- 9.16.8 released ---

5516. [func] The default EDNS buffer size has been changed from 4096
to 1232 bytes. [GL #2183]

5515. [func] Add 'rndc dnssec -rollover' command to trigger a manual
rollover for a specific key. [GL #1749]

5514. [bug] Fix KASP expected key size for Ed25519 and Ed448.
[GL #2171]

5513. [doc] The ARM section describing the "rrset-order" statement
was rewritten to make it unambiguous and up-to-date with
the source code. [GL #2139]

5512. [bug] "rrset-order" rules using "order none" were causing
named to crash despite named-checkconf treating them as
valid. [GL #2139]

5511. [bug] 'dig -u +yaml' failed to display timestamps to the
microsecond. [GL #2190]

5510. [bug] Implement the attach/detach semantics for dns_message_t
to fix a data race in accessing an already-destroyed
fctx->rmessage. [GL #2124]

5509. [bug] filter-aaaa: named crashed upon shutdown if it was in
the process of recursing for A RRsets. [GL #1040]

5508. [func] Added new parameter "-expired" for "rndc dumpdb" that
also prints expired RRsets (awaiting cleanup) to the
dump file. [GL #1870]

5507. [bug] Named could compute incorrect SIG(0) responses.
[GL #2109]

5506. [bug] Properly handle failed sysconf() calls, so we don't
report invalid memory size. [GL #2166]

5505. [bug] Updating contents of a mixed-case RPZ could cause some
rules to be ignored. [GL #2169]

5503. [bug] Cleaned up reference counting of network manager
handles, now using isc_nmhandle_attach() and _detach()
instead of _ref() and _unref(). [GL #2122]

--- 9.16.7 released ---

5501. [func] Log CDS/CDNSKEY publication. [GL #1748]

5500. [bug] Fix (non-)publication of CDS and CDNSKEY records.
[GL #2103]

5499. [func] Add '-P ds' and '-D ds' arguments to dnssec-settime.
[GL #1748]

5497. [bug] 'dig +bufsize=0' failed to disable EDNS. [GL #2054]

5496. [bug] Address a TSAN report by ensuring each rate limiter
object holds a reference to its task. [GL #2081]

5495. [bug] With query minimization enabled, named failed to
resolve ip6.arpa. names that had extra labels to the
left of the IPv6 part. [GL #1847]

5494. [bug] Silence the EPROTO syslog message on older systems.
[GL #1928]

5493. [bug] Fix off-by-one error when calculating new hash table
size. [GL #2104]

5492. [bug] Tighten LOC parsing to reject a period (".") and/or "m"
as a value. Fix handling of negative altitudes which are
not whole meters. [GL #2074]

5491. [bug] rbtversion->glue_table_size could be read without the
appropriate lock being held. [GL #2080]

5489. [bug] Named erroneously accepted certain invalid resource
records that were incorrectly processed after
subsequently being written to disk and loaded back, as
the wire format differed. Such records include: CERT,
IPSECKEY, NSEC3, NSEC3PARAM, NXT, SIG, TLSA, WKS, and
X25. [GL !3953]

5488. [bug] NTA code needed to have a weak reference on its
associated view to prevent the latter from being deleted
while NTA tests were being performed. [GL #2067]

5486. [func] Add 'rndc dnssec -checkds' command, which signals to
named that the DS record for a given zone or key has
been updated in the parent zone. [GL #1613]

--- 9.16.6 released ---

5484. [func] Expire zero TTL records quickly rather than using them
for stale answers. [GL #1829]

5483. [func] A new configuration option "stale-cache-enable" has been
introduced to enable or disable keeping stale answers in
cache. [GL #1712]

5482. [bug] If the Duplicate Address Detection (DAD) mechanism had
not yet finished after adding a new IPv6 address to the
system, BIND 9 would fail to bind to IPv6 addresses in a
tentative state. [GL #2038]

5481. [security] "update-policy" rules of type "subdomain" were
incorrectly treated as "zonesub" rules, which allowed
keys used in "subdomain" rules to update names outside
of the specified subdomains. The problem was fixed by
making sure "subdomain" rules are again processed as
described in the ARM. (CVE-2020-8624) [GL #2055]

5480. [security] When BIND 9 was compiled with native PKCS#11 support, it
was possible to trigger an assertion failure in code
determining the number of bits in the PKCS#11 RSA public
key with a specially crafted packet. (CVE-2020-8623)
[GL #2037]

5479. [security] named could crash in certain query resolution scenarios
where QNAME minimization and forwarding were both
enabled. (CVE-2020-8621) [GL #1997]

5478. [security] It was possible to trigger an assertion failure by
sending a specially crafted large TCP DNS message.
(CVE-2020-8620) [GL #1996]

5477. [bug] The idle timeout for connected TCP sockets, which was
previously set to a high fixed value, is now derived
from the client query processing timeout configured for
a resolver. [GL #2024]

5476. [security] It was possible to trigger an assertion failure when
verifying the response to a TSIG-signed request.
(CVE-2020-8622) [GL #2028]

5475. [bug] Wildcard RPZ passthru rules could incorrectly be
overridden by other rules that were loaded from RPZ
zones which appeared later in the "response-policy"
statement. This has been fixed. [GL #1619]

5474. [bug] dns_rdata_hip_next() failed to return ISC_R_NOMORE
when it should have. [GL !3880]

5473. [func] The RBT hash table implementation has been changed
to use a faster hash function (HalfSipHash2-4) and
Fibonacci hashing for better distribution. Setting
"max-cache-size" now preallocates a fixed-size hash
table so that rehashing does not cause resolution
brownouts while the hash table is grown. [GL #1775]

5471. [bug] The introduction of KASP support inadvertently caused
the second field of "sig-validity-interval" to always be
calculated in hours, even in cases when it should have
been calculated in days. This has been fixed. (Thanks to
Tony Finch.) [GL !3735]

5469. [port] On illumos, a constant called SEC is already defined in
<sys/time.h>, which conflicts with an identically named
constant in libbind9. This conflict has been resolved.
[GL #1993]

5468. [bug] Addressed potential double unlock in process_fd().
[GL #2005]

5466. [bug] Addressed an error in recursive clients stats reporting.
[GL #1719]

5465. [func] Added fallback to built-in trust-anchors, managed-keys,
or trusted-keys if the bindkeys-file (bind.keys) cannot
be parsed. [GL #1235]

5464. [bug] Requesting more than 128 files to be saved when rolling
dnstap log files caused a buffer overflow. This has been
fixed. [GL #1989]

5462. [bug] Move LMDB locking from LMDB itself to named. [GL #1976]

5461. [bug] The STALE rdataset header attribute was updated while
the write lock was not being held, leading to incorrect
statistics. The header attributes are now converted to
use atomic operations. [GL #1475]

branches: 1.1.1.1.2; 1.1.1.1.4;
Import bind-9.12.2-P2 since bind-9.10 (the last BSD version) is
now out of support. The changes since our last version imported
(9.10.7) version are too big to include inline here; please consult
the CHANGES file in this directory.

Import bind-9.16.20

--- 9.16.20 released ---

5689. [security] An assertion failure occurred when named attempted to
send a UDP packet that exceeded the MTU size, if
Response Rate Limiting (RRL) was enabled.
(CVE-2021-25218) [GL #2856]

5688. [bug] Zones using KASP and inline-signed zones failed to apply
changes from the unsigned zone to the signed zone under
certain circumstances. This has been fixed. [GL #2735]

5687. [bug] "rndc reload <zonename>" could trigger a redundant
reload for an inline-signed zone whose zone file was not
modified since the last "rndc reload". This has been
fixed. [GL #2855]

5686. [func] The number of internal data structures allocated for
each zone was reduced. [GL #2829]

5685. [bug] named failed to check the opcode of responses when
performing zone refreshes, stub zone updates, and UPDATE
forwarding. This has been fixed. [GL #2762]

5682. [bug] Some changes to "zone-statistics" settings were not
properly processed by "rndc reconfig". This has been
fixed. [GL #2820]

5681. [func] Relax the checks in the dns_zone_cdscheck() function to
allow CDS and CDNSKEY records in the zone that do not
match an existing DNSKEY record, as long as the
algorithm matches. This allows a clean rollover from one
provider to another in a multi-signer DNSSEC
configuration. [GL #2710]

5679. [func] Thread affinity is no longer set. [GL #2822]

5678. [bug] The "check DS" code failed to release all resources upon
named shutdown when a refresh was in progress. This has
been fixed. [GL #2811]

5672. [bug] Authentication of rndc messages could fail if a
"controls" statement was configured with multiple key
algorithms for the same listener. This has been fixed.
[GL #2756]

--- 9.16.19 released ---

5671. [bug] A race condition could occur where two threads were
competing for the same set of key file locks, leading to
a deadlock. This has been fixed. [GL #2786]

5670. [bug] create_keydata() created an invalid placeholder keydata
record upon a refresh failure, which prevented the
database of managed keys from subsequently being read
back. This has been fixed. [GL #2686]

5669. [func] KASP support was extended with the "check DS" feature.
Zones with "dnssec-policy" and "parental-agents"
configured now check for DS presence and can perform
automatic KSK rollovers. [GL #1126]

5668. [bug] Rescheduling a setnsec3param() task when a zone failed
to load on startup caused a hang on shutdown. This has
been fixed. [GL #2791]

5667. [bug] The configuration-checking code failed to account for
the inheritance rules of the "dnssec-policy" option.
This has been fixed. [GL #2780]

5666. [doc] The safe "edns-udp-size" value was tweaked to match the
probing value from BIND 9.16 for better compatibility.
[GL #2183]

5665. [bug] If nsupdate sends an SOA request and receives a REFUSED
response, it now fails over to the next available
server. [GL #2758]

5664. [func] For UDP messages larger than the path MTU, named now
sends an empty response with the TC (TrunCated) bit set.
In addition, setting the DF (Don't Fragment) flag on
outgoing UDP sockets was re-enabled. [GL #2790]

5662. [bug] Views with recursion disabled are now configured with a
default cache size of 2 MB unless "max-cache-size" is
explicitly set. This prevents cache RBT hash tables from
being needlessly preallocated for such views. [GL #2777]

5661. [bug] Change 5644 inadvertently introduced a deadlock: when
locking the key file mutex for each zone structure in a
different view, the "in-view" logic was not considered.
This has been fixed. [GL #2783]

5658. [bug] Increasing "max-cache-size" for a running named instance
(using "rndc reconfig") did not cause the hash tables
used by cache databases to be grown accordingly. This
has been fixed. [GL #2770]

5655. [bug] Signed, insecure delegation responses prepared by named
either lacked the necessary NSEC records or contained
duplicate NSEC records when both wildcard expansion and
CNAME chaining were required to prepare the response.
This has been fixed. [GL #2759]

5653. [bug] A bug that caused the NSEC3 salt to be changed on every
restart for zones using KASP has been fixed. [GL #2725]

--- 9.16.18 released ---

5660. [bug] The configuration-checking code failed to account for
the inheritance rules of the "key-directory" option.
[GL #2778]

5659. [bug] When preparing DNS responses, named could replace the
letters 'W' (uppercase) and 'w' (lowercase) with '\000'.
This has been fixed. [GL #2779]

--- 9.16.17 released ---

5652. [bug] A copy-and-paste error in change 5584 caused the
IP_DONTFRAG socket option to be enabled instead of
disabled. This has been fixed. [GL #2746]

5651. [func] Refactor zone dumping to be processed asynchronously via
the uv_work_t thread pool API. [GL #2732]

5650. [bug] Prevent a crash that could occur if serve-stale was
enabled and a prefetch was triggered during a query
restart. [GL #2733]

5649. [bug] If a query was answered with stale data on a server with
DNS64 enabled, an assertion could occur if a non-stale
answer arrived afterward. [GL #2731]

5648. [bug] The calculation of the estimated IXFR transaction size
in dns_journal_iter_init() was invalid. [GL #2685]

5644. [bug] Fix a race condition in reading and writing key files
for zones using KASP and configured in multiple views.
[GL #1875]

5643. [cleanup] "make install" no longer creates an empty
${localstatedir}/run directory. [GL #2709]

5642. [bug] Zones which are configured in multiple views with
different values set for "dnssec-policy" and with
identical values set for "key-directory" are now
detected and treated as a configuration error.
[GL #2463]

5641. [bug] Address a potential memory leak in
dst_key_fromnamedfile(). [GL #2689]

5639. [bug] Check that the first and last SOA record of an AXFR are
consistent. [GL #2528]

5638. [bug] Improvements related to network manager/task manager
integration:
- isc_managers_create() and isc_managers_destroy()
functions were added to handle setup and teardown of
netmgr, taskmgr, timermgr, and socketmgr, since these
require a precise order of operations now.
- Event queue processing is now quantized to prevent
infinite looping.
- The netmgr can now be paused from within a netmgr
thread.
- Deadlocks due to a conflict between netmgr's
pause/resume and listen/stoplistening operations were
fixed.
[GL #2654]

5633. [doc] The "inline-signing" option was incorrectly described as
being inherited from the "options"/"view" levels and was
incorrectly accepted at those levels without effect.
This has been fixed. [GL #2536]

5624. [func] Task manager events are now processed inside network
manager loops. The task manager no longer needs its own
set of worker threads, which improves resolver
performance. [GL #2638]

--- 9.16.16 released ---

5637. [func] Change the default value of the "max-ixfr-ratio" option
to "unlimited". [GL #2671]

5636. [bug] named and named-checkconf did not report an error when
multiple zones with the "dnssec-policy" option set were
using the same zone file. This has been fixed.
[GL #2603]

5635. [bug] Journal compaction could fail when a journal with
invalid transaction headers was not detected at startup.
This has been fixed. [GL #2670]

5634. [bug] If "dnssec-policy" was active and a private key file was
temporarily offline during a rekey event, named could
incorrectly introduce replacement keys and break a
signed zone. This has been fixed. [GL #2596]

5633. [doc] The "inline-signing" option was incorrectly described as
being inherited from the "options"/"view" levels and was
incorrectly accepted at those levels without effect.
This has been fixed. [GL #2536]

5632. [func] Add a new built-in KASP, "insecure", which is used to
transition a zone from a signed to an unsigned state.
The existing built-in KASP "none" should no longer be
used to unsign a zone. [GL #2645]

5631. [protocol] Update the implementation of the ZONEMD RR type to match
RFC 8976. [GL #2658]

5630. [func] Treat DNSSEC responses containing NSEC3 records with
iteration counts greater than 150 as insecure.
[GL #2445]

5629. [func] Reduce the maximum supported number of NSEC3 iterations
that can be configured for a zone to 150. [GL #2642]

5627. [bug] RRSIG(SOA) RRsets placed anywhere other than at the zone
apex were triggering infinite resigning loops. This has
been fixed. [GL #2650]

5626. [bug] When generating zone signing keys, KASP now also checks
for key ID conflicts among newly created keys, rather
than just between new and existing ones. [GL #2628]

5625. [bug] A deadlock could occur when multiple "rndc addzone",
"rndc delzone", and/or "rndc modzone" commands were
invoked simultaneously for different zones. This has
been fixed. [GL #2626]

5622. [cleanup] The lib/samples/ directory has been removed, as export
versions of libraries are no longer maintained.
[GL !4835]

5619. [protocol] Implement draft-vandijk-dnsop-nsec-ttl, updating the
protocol such that NSEC(3) TTL values are set to the
minimum of the SOA MINIMUM value or the SOA TTL.
[GL #2347]

5618. [bug] Change 5149 introduced some inconsistencies in the way
record TTLs were presented in cache dumps. These
inconsistencies have been eliminated. [GL #389]
[GL #2289]

--- 9.16.12 released ---

5578. [protocol] Make "check-names" accept A records below "_spf",
"_spf_rate", and "_spf_verify" labels in order to cater
for the "exists" SPF mechanism specified in RFC 7208
section 5.7 and appendix D.1. [GL #2377]

5577. [bug] Fix the "three is a crowd" key rollover bug in KASP by
correctly implementing Equation (2) of the "Flexible and
Robust Key Rollover" paper. [GL #2375]

5575. [bug] When migrating to KASP, BIND 9 considered keys with the
"Inactive" and/or "Delete" timing metadata to be
possible active keys. This has been fixed. [GL #2406]

5572. [bug] Address potential double free in generatexml().
[GL #2420]

5571. [bug] named failed to start when its configuration included a
zone with a non-builtin "allow-update" ACL attached.
[GL #2413]

5570. [bug] Improve performance of the DNSSEC verification code by
reducing the number of repeated calls to
dns_dnssec_keyfromrdata(). [GL #2073]

5569. [bug] Emit useful error message when "rndc retransfer" is
applied to a zone of inappropriate type. [GL #2342]

5568. [bug] Fixed a crash in "dnssec-keyfromlabel" when using ECDSA
keys. [GL #2178]

5567. [bug] Dig now reports unknown dash options while pre-parsing
the options. This prevents "-multi" instead of "+multi"
from reporting memory usage before ending option parsing
with "Invalid option: -lti". [GL #2403]

5566. [func] Add "stale-answer-client-timeout" option, which is the
amount of time a recursive resolver waits before
attempting to answer the query using stale data from
cache. [GL #2247]

5565. [func] The SONAMEs for BIND 9 libraries now include the current
BIND 9 version number, in an effort to tightly couple
internal libraries with a specific release. [GL #2387]

5562. [security] Fix off-by-one bug in ISC SPNEGO implementation.
(CVE-2020-8625) [GL #2354]

5561. [bug] KASP incorrectly set signature validity to the value of
the DNSKEY signature validity. This is now fixed.
[GL #2383]

5560. [func] The default value of "max-stale-ttl" has been changed
from 12 hours to 1 day and the default value of
"stale-answer-ttl" has been changed from 1 second to 30
seconds, following RFC 8767 recommendations. [GL #2248]

5456. [func] Added "primaries" as a synonym for "masters" in
named.conf, and "primary-only" as a synonym for
"master-only" in the parameters to "notify", to bring
terminology up-to-date with RFC 8499. [GL #1948]

5362. [func] Limit the size of IXFR responses so that AXFR will
be used instead if it would be smaller. This is
controlled by the "max-ixfr-ratio" option, which
is a percentage representing the ratio of IXFR size
to the size of the entire zone. This value cannot
exceed 100%, which is the default. [GL #1515]

--- 9.16.11 released ---

5559. [bug] The --with-maxminddb=PATH form of the build-time option
enabling support for libmaxminddb was not working
correctly. This has been fixed. [GL #2366]

5557. [bug] Prevent RBTDB instances from being destroyed by multiple
threads at the same time. [GL #2317]

5556. [bug] Further tweak newline printing in dnssec-signzone and
dnssec-verify. [GL #2359]

5555. [bug] server->reload_status was not properly initialized.
[GL #2361]

5554. [bug] dnssec-signzone and dnssec-verify were missing newlines
between log messages. [GL #2359]

5553. [bug] When reconfiguring named, removing "auto-dnssec" did not
turn off DNSSEC maintenance. [GL #2341]

5552. [func] When switching to "dnssec-policy none;", named now
permits a safe transition to insecure mode and publishes
the CDS and CDNSKEY DELETE records, as described in RFC
8078. [GL #1750]

5551. [bug] named no longer attempts to assign threads to CPUs
outside the CPU affinity set. Thanks to Ole Bj��rn
Hessen. [GL #2245]

5550. [func] dnssec-signzone and named now log a warning when falling
back to the "increment" SOA serial method. [GL #2058]

5545. [func] OS support for load-balanced sockets is no longer
required to receive incoming queries in multiple netmgr
threads. [GL #2137]

5543. [bug] Fix UDP performance issues caused by making netmgr
callbacks asynchronous-only. [GL #2320]

5542. [bug] Refactor netmgr. [GL #1920] [GL #2034] [GL #2061]
[GL #2194] [GL #2221] [GL #2266] [GL #2283] [GL #2318]
[GL #2321]

--- 9.16.10 released ---

5544. [func] Restore the default value of "nocookie-udp-size" to 4096
bytes. [GL #2250]

5541. [func] Adjust the "max-recursion-queries" default from 75 to
100. [GL #2305]

5540. [port] Fix building with native PKCS#11 support for AEP Keyper.
[GL #2315]

5539. [bug] Tighten handling of missing DNS COOKIE responses over
UDP by falling back to TCP. [GL #2275]

5538. [func] Add NSEC3 support to KASP. A new option for
"dnssec-policy", "nsec3param", can be used to set the
desired NSEC3 parameters. NSEC3 salt collisions are
automatically prevented during resalting. Salt
generation is now logged with zone context. [GL #1620]

5534. [bug] The CNAME synthesized from a DNAME was incorrectly
followed when the QTYPE was CNAME or ANY. [GL #2280]

--- 9.16.9 released ---

5533. [func] Add the "stale-refresh-time" option, a time window that
starts after a failed lookup, during which a stale RRset
is served directly from cache before a new attempt to
refresh it is made. [GL #2066]

5530. [bug] dnstap did not capture responses to forwarded UPDATE
requests. [GL #2252]

5527. [bug] A NULL pointer dereference occurred when creating an NTA
recheck query failed. [GL #2244]

5525. [bug] Change 5503 inadvertently broke cross-compilation by
replacing a call to AC_LINK_IFELSE() with a call to
AC_RUN_IFELSE() in configure.ac. This has been fixed,
making cross-compilation possible again. [GL #2237]

5523. [bug] The initial lookup in a zone transitioning to/from a
signed state could fail if the DNSKEY RRset was not
found. [GL #2236]

5522. [bug] Fixed a race/NULL dereference in TCPDNS send. [GL #2227]

5520. [bug] Fixed a number of shutdown races, reference counting
errors, and spurious log messages that could occur
in the network manager. [GL #2221]

5518. [bug] Stub zones now work correctly with primary servers using
"minimal-responses yes". [GL #1736]

5517. [bug] Do not treat UV_EOF as a TCP4RecvErr or a TCP6RecvErr.
[GL #2208]

--- 9.16.8 released ---

5516. [func] The default EDNS buffer size has been changed from 4096
to 1232 bytes. [GL #2183]

5515. [func] Add 'rndc dnssec -rollover' command to trigger a manual
rollover for a specific key. [GL #1749]

5514. [bug] Fix KASP expected key size for Ed25519 and Ed448.
[GL #2171]

5513. [doc] The ARM section describing the "rrset-order" statement
was rewritten to make it unambiguous and up-to-date with
the source code. [GL #2139]

5512. [bug] "rrset-order" rules using "order none" were causing
named to crash despite named-checkconf treating them as
valid. [GL #2139]

5511. [bug] 'dig -u +yaml' failed to display timestamps to the
microsecond. [GL #2190]

5510. [bug] Implement the attach/detach semantics for dns_message_t
to fix a data race in accessing an already-destroyed
fctx->rmessage. [GL #2124]

5509. [bug] filter-aaaa: named crashed upon shutdown if it was in
the process of recursing for A RRsets. [GL #1040]

5508. [func] Added new parameter "-expired" for "rndc dumpdb" that
also prints expired RRsets (awaiting cleanup) to the
dump file. [GL #1870]

5507. [bug] Named could compute incorrect SIG(0) responses.
[GL #2109]

5506. [bug] Properly handle failed sysconf() calls, so we don't
report invalid memory size. [GL #2166]

5505. [bug] Updating contents of a mixed-case RPZ could cause some
rules to be ignored. [GL #2169]

5503. [bug] Cleaned up reference counting of network manager
handles, now using isc_nmhandle_attach() and _detach()
instead of _ref() and _unref(). [GL #2122]

--- 9.16.7 released ---

5501. [func] Log CDS/CDNSKEY publication. [GL #1748]

5500. [bug] Fix (non-)publication of CDS and CDNSKEY records.
[GL #2103]

5499. [func] Add '-P ds' and '-D ds' arguments to dnssec-settime.
[GL #1748]

5497. [bug] 'dig +bufsize=0' failed to disable EDNS. [GL #2054]

5496. [bug] Address a TSAN report by ensuring each rate limiter
object holds a reference to its task. [GL #2081]

5495. [bug] With query minimization enabled, named failed to
resolve ip6.arpa. names that had extra labels to the
left of the IPv6 part. [GL #1847]

5494. [bug] Silence the EPROTO syslog message on older systems.
[GL #1928]

5493. [bug] Fix off-by-one error when calculating new hash table
size. [GL #2104]

5492. [bug] Tighten LOC parsing to reject a period (".") and/or "m"
as a value. Fix handling of negative altitudes which are
not whole meters. [GL #2074]

5491. [bug] rbtversion->glue_table_size could be read without the
appropriate lock being held. [GL #2080]

5489. [bug] Named erroneously accepted certain invalid resource
records that were incorrectly processed after
subsequently being written to disk and loaded back, as
the wire format differed. Such records include: CERT,
IPSECKEY, NSEC3, NSEC3PARAM, NXT, SIG, TLSA, WKS, and
X25. [GL !3953]

5488. [bug] NTA code needed to have a weak reference on its
associated view to prevent the latter from being deleted
while NTA tests were being performed. [GL #2067]

5486. [func] Add 'rndc dnssec -checkds' command, which signals to
named that the DS record for a given zone or key has
been updated in the parent zone. [GL #1613]

--- 9.16.6 released ---

5484. [func] Expire zero TTL records quickly rather than using them
for stale answers. [GL #1829]

5483. [func] A new configuration option "stale-cache-enable" has been
introduced to enable or disable keeping stale answers in
cache. [GL #1712]

5482. [bug] If the Duplicate Address Detection (DAD) mechanism had
not yet finished after adding a new IPv6 address to the
system, BIND 9 would fail to bind to IPv6 addresses in a
tentative state. [GL #2038]

5481. [security] "update-policy" rules of type "subdomain" were
incorrectly treated as "zonesub" rules, which allowed
keys used in "subdomain" rules to update names outside
of the specified subdomains. The problem was fixed by
making sure "subdomain" rules are again processed as
described in the ARM. (CVE-2020-8624) [GL #2055]

5480. [security] When BIND 9 was compiled with native PKCS#11 support, it
was possible to trigger an assertion failure in code
determining the number of bits in the PKCS#11 RSA public
key with a specially crafted packet. (CVE-2020-8623)
[GL #2037]

5479. [security] named could crash in certain query resolution scenarios
where QNAME minimization and forwarding were both
enabled. (CVE-2020-8621) [GL #1997]

5478. [security] It was possible to trigger an assertion failure by
sending a specially crafted large TCP DNS message.
(CVE-2020-8620) [GL #1996]

5477. [bug] The idle timeout for connected TCP sockets, which was
previously set to a high fixed value, is now derived
from the client query processing timeout configured for
a resolver. [GL #2024]

5476. [security] It was possible to trigger an assertion failure when
verifying the response to a TSIG-signed request.
(CVE-2020-8622) [GL #2028]

5475. [bug] Wildcard RPZ passthru rules could incorrectly be
overridden by other rules that were loaded from RPZ
zones which appeared later in the "response-policy"
statement. This has been fixed. [GL #1619]

5474. [bug] dns_rdata_hip_next() failed to return ISC_R_NOMORE
when it should have. [GL !3880]

5473. [func] The RBT hash table implementation has been changed
to use a faster hash function (HalfSipHash2-4) and
Fibonacci hashing for better distribution. Setting
"max-cache-size" now preallocates a fixed-size hash
table so that rehashing does not cause resolution
brownouts while the hash table is grown. [GL #1775]

5471. [bug] The introduction of KASP support inadvertently caused
the second field of "sig-validity-interval" to always be
calculated in hours, even in cases when it should have
been calculated in days. This has been fixed. (Thanks to
Tony Finch.) [GL !3735]

5469. [port] On illumos, a constant called SEC is already defined in
<sys/time.h>, which conflicts with an identically named
constant in libbind9. This conflict has been resolved.
[GL #1993]

5468. [bug] Addressed potential double unlock in process_fd().
[GL #2005]

5466. [bug] Addressed an error in recursive clients stats reporting.
[GL #1719]

5465. [func] Added fallback to built-in trust-anchors, managed-keys,
or trusted-keys if the bindkeys-file (bind.keys) cannot
be parsed. [GL #1235]

5464. [bug] Requesting more than 128 files to be saved when rolling
dnstap log files caused a buffer overflow. This has been
fixed. [GL #1989]

5462. [bug] Move LMDB locking from LMDB itself to named. [GL #1976]

5461. [bug] The STALE rdataset header attribute was updated while
the write lock was not being held, leading to incorrect
statistics. The header attributes are now converted to
use atomic operations. [GL #1475]

branches: 1.1.1.1.2; 1.1.1.1.4;
Import bind-9.12.2-P2 since bind-9.10 (the last BSD version) is
now out of support. The changes since our last version imported
(9.10.7) version are too big to include inline here; please consult
the CHANGES file in this directory.

--- 9.16.12 released ---

5578. [protocol] Make "check-names" accept A records below "_spf",
"_spf_rate", and "_spf_verify" labels in order to cater
for the "exists" SPF mechanism specified in RFC 7208
section 5.7 and appendix D.1. [GL #2377]

5577. [bug] Fix the "three is a crowd" key rollover bug in KASP by
correctly implementing Equation (2) of the "Flexible and
Robust Key Rollover" paper. [GL #2375]

5575. [bug] When migrating to KASP, BIND 9 considered keys with the
"Inactive" and/or "Delete" timing metadata to be
possible active keys. This has been fixed. [GL #2406]

5572. [bug] Address potential double free in generatexml().
[GL #2420]

5571. [bug] named failed to start when its configuration included a
zone with a non-builtin "allow-update" ACL attached.
[GL #2413]

5570. [bug] Improve performance of the DNSSEC verification code by
reducing the number of repeated calls to
dns_dnssec_keyfromrdata(). [GL #2073]

5569. [bug] Emit useful error message when "rndc retransfer" is
applied to a zone of inappropriate type. [GL #2342]

5568. [bug] Fixed a crash in "dnssec-keyfromlabel" when using ECDSA
keys. [GL #2178]

5567. [bug] Dig now reports unknown dash options while pre-parsing
the options. This prevents "-multi" instead of "+multi"
from reporting memory usage before ending option parsing
with "Invalid option: -lti". [GL #2403]

5566. [func] Add "stale-answer-client-timeout" option, which is the
amount of time a recursive resolver waits before
attempting to answer the query using stale data from
cache. [GL #2247]

5565. [func] The SONAMEs for BIND 9 libraries now include the current
BIND 9 version number, in an effort to tightly couple
internal libraries with a specific release. [GL #2387]

5562. [security] Fix off-by-one bug in ISC SPNEGO implementation.
(CVE-2020-8625) [GL #2354]

5561. [bug] KASP incorrectly set signature validity to the value of
the DNSKEY signature validity. This is now fixed.
[GL #2383]

5560. [func] The default value of "max-stale-ttl" has been changed
from 12 hours to 1 day and the default value of
"stale-answer-ttl" has been changed from 1 second to 30
seconds, following RFC 8767 recommendations. [GL #2248]

5456. [func] Added "primaries" as a synonym for "masters" in
named.conf, and "primary-only" as a synonym for
"master-only" in the parameters to "notify", to bring
terminology up-to-date with RFC 8499. [GL #1948]

5362. [func] Limit the size of IXFR responses so that AXFR will
be used instead if it would be smaller. This is
controlled by the "max-ixfr-ratio" option, which
is a percentage representing the ratio of IXFR size
to the size of the entire zone. This value cannot
exceed 100%, which is the default. [GL #1515]

--- 9.16.11 released ---

5559. [bug] The --with-maxminddb=PATH form of the build-time option
enabling support for libmaxminddb was not working
correctly. This has been fixed. [GL #2366]

5557. [bug] Prevent RBTDB instances from being destroyed by multiple
threads at the same time. [GL #2317]

5556. [bug] Further tweak newline printing in dnssec-signzone and
dnssec-verify. [GL #2359]

5555. [bug] server->reload_status was not properly initialized.
[GL #2361]

5554. [bug] dnssec-signzone and dnssec-verify were missing newlines
between log messages. [GL #2359]

5553. [bug] When reconfiguring named, removing "auto-dnssec" did not
turn off DNSSEC maintenance. [GL #2341]

5552. [func] When switching to "dnssec-policy none;", named now
permits a safe transition to insecure mode and publishes
the CDS and CDNSKEY DELETE records, as described in RFC
8078. [GL #1750]

5551. [bug] named no longer attempts to assign threads to CPUs
outside the CPU affinity set. Thanks to Ole Bj��rn
Hessen. [GL #2245]

5550. [func] dnssec-signzone and named now log a warning when falling
back to the "increment" SOA serial method. [GL #2058]

5545. [func] OS support for load-balanced sockets is no longer
required to receive incoming queries in multiple netmgr
threads. [GL #2137]

5543. [bug] Fix UDP performance issues caused by making netmgr
callbacks asynchronous-only. [GL #2320]

5542. [bug] Refactor netmgr. [GL #1920] [GL #2034] [GL #2061]
[GL #2194] [GL #2221] [GL #2266] [GL #2283] [GL #2318]
[GL #2321]

--- 9.16.10 released ---

5544. [func] Restore the default value of "nocookie-udp-size" to 4096
bytes. [GL #2250]

5541. [func] Adjust the "max-recursion-queries" default from 75 to
100. [GL #2305]

5540. [port] Fix building with native PKCS#11 support for AEP Keyper.
[GL #2315]

5539. [bug] Tighten handling of missing DNS COOKIE responses over
UDP by falling back to TCP. [GL #2275]

5538. [func] Add NSEC3 support to KASP. A new option for
"dnssec-policy", "nsec3param", can be used to set the
desired NSEC3 parameters. NSEC3 salt collisions are
automatically prevented during resalting. Salt
generation is now logged with zone context. [GL #1620]

5534. [bug] The CNAME synthesized from a DNAME was incorrectly
followed when the QTYPE was CNAME or ANY. [GL #2280]

--- 9.16.9 released ---

5533. [func] Add the "stale-refresh-time" option, a time window that
starts after a failed lookup, during which a stale RRset
is served directly from cache before a new attempt to
refresh it is made. [GL #2066]

5530. [bug] dnstap did not capture responses to forwarded UPDATE
requests. [GL #2252]

5527. [bug] A NULL pointer dereference occurred when creating an NTA
recheck query failed. [GL #2244]

5525. [bug] Change 5503 inadvertently broke cross-compilation by
replacing a call to AC_LINK_IFELSE() with a call to
AC_RUN_IFELSE() in configure.ac. This has been fixed,
making cross-compilation possible again. [GL #2237]

5523. [bug] The initial lookup in a zone transitioning to/from a
signed state could fail if the DNSKEY RRset was not
found. [GL #2236]

5522. [bug] Fixed a race/NULL dereference in TCPDNS send. [GL #2227]

5520. [bug] Fixed a number of shutdown races, reference counting
errors, and spurious log messages that could occur
in the network manager. [GL #2221]

5518. [bug] Stub zones now work correctly with primary servers using
"minimal-responses yes". [GL #1736]

5517. [bug] Do not treat UV_EOF as a TCP4RecvErr or a TCP6RecvErr.
[GL #2208]

--- 9.16.8 released ---

5516. [func] The default EDNS buffer size has been changed from 4096
to 1232 bytes. [GL #2183]

5515. [func] Add 'rndc dnssec -rollover' command to trigger a manual
rollover for a specific key. [GL #1749]

5514. [bug] Fix KASP expected key size for Ed25519 and Ed448.
[GL #2171]

5513. [doc] The ARM section describing the "rrset-order" statement
was rewritten to make it unambiguous and up-to-date with
the source code. [GL #2139]

5512. [bug] "rrset-order" rules using "order none" were causing
named to crash despite named-checkconf treating them as
valid. [GL #2139]

5511. [bug] 'dig -u +yaml' failed to display timestamps to the
microsecond. [GL #2190]

5510. [bug] Implement the attach/detach semantics for dns_message_t
to fix a data race in accessing an already-destroyed
fctx->rmessage. [GL #2124]

5509. [bug] filter-aaaa: named crashed upon shutdown if it was in
the process of recursing for A RRsets. [GL #1040]

5508. [func] Added new parameter "-expired" for "rndc dumpdb" that
also prints expired RRsets (awaiting cleanup) to the
dump file. [GL #1870]

5507. [bug] Named could compute incorrect SIG(0) responses.
[GL #2109]

5506. [bug] Properly handle failed sysconf() calls, so we don't
report invalid memory size. [GL #2166]

5505. [bug] Updating contents of a mixed-case RPZ could cause some
rules to be ignored. [GL #2169]

5503. [bug] Cleaned up reference counting of network manager
handles, now using isc_nmhandle_attach() and _detach()
instead of _ref() and _unref(). [GL #2122]

--- 9.16.7 released ---

5501. [func] Log CDS/CDNSKEY publication. [GL #1748]

5500. [bug] Fix (non-)publication of CDS and CDNSKEY records.
[GL #2103]

5499. [func] Add '-P ds' and '-D ds' arguments to dnssec-settime.
[GL #1748]

5497. [bug] 'dig +bufsize=0' failed to disable EDNS. [GL #2054]

5496. [bug] Address a TSAN report by ensuring each rate limiter
object holds a reference to its task. [GL #2081]

5495. [bug] With query minimization enabled, named failed to
resolve ip6.arpa. names that had extra labels to the
left of the IPv6 part. [GL #1847]

5494. [bug] Silence the EPROTO syslog message on older systems.
[GL #1928]

5493. [bug] Fix off-by-one error when calculating new hash table
size. [GL #2104]

5492. [bug] Tighten LOC parsing to reject a period (".") and/or "m"
as a value. Fix handling of negative altitudes which are
not whole meters. [GL #2074]

5491. [bug] rbtversion->glue_table_size could be read without the
appropriate lock being held. [GL #2080]

5489. [bug] Named erroneously accepted certain invalid resource
records that were incorrectly processed after
subsequently being written to disk and loaded back, as
the wire format differed. Such records include: CERT,
IPSECKEY, NSEC3, NSEC3PARAM, NXT, SIG, TLSA, WKS, and
X25. [GL !3953]

5488. [bug] NTA code needed to have a weak reference on its
associated view to prevent the latter from being deleted
while NTA tests were being performed. [GL #2067]

5486. [func] Add 'rndc dnssec -checkds' command, which signals to
named that the DS record for a given zone or key has
been updated in the parent zone. [GL #1613]

--- 9.16.6 released ---

5484. [func] Expire zero TTL records quickly rather than using them
for stale answers. [GL #1829]

5483. [func] A new configuration option "stale-cache-enable" has been
introduced to enable or disable keeping stale answers in
cache. [GL #1712]

5482. [bug] If the Duplicate Address Detection (DAD) mechanism had
not yet finished after adding a new IPv6 address to the
system, BIND 9 would fail to bind to IPv6 addresses in a
tentative state. [GL #2038]

5481. [security] "update-policy" rules of type "subdomain" were
incorrectly treated as "zonesub" rules, which allowed
keys used in "subdomain" rules to update names outside
of the specified subdomains. The problem was fixed by
making sure "subdomain" rules are again processed as
described in the ARM. (CVE-2020-8624) [GL #2055]

5480. [security] When BIND 9 was compiled with native PKCS#11 support, it
was possible to trigger an assertion failure in code
determining the number of bits in the PKCS#11 RSA public
key with a specially crafted packet. (CVE-2020-8623)
[GL #2037]

5479. [security] named could crash in certain query resolution scenarios
where QNAME minimization and forwarding were both
enabled. (CVE-2020-8621) [GL #1997]

5478. [security] It was possible to trigger an assertion failure by
sending a specially crafted large TCP DNS message.
(CVE-2020-8620) [GL #1996]

5477. [bug] The idle timeout for connected TCP sockets, which was
previously set to a high fixed value, is now derived
from the client query processing timeout configured for
a resolver. [GL #2024]

5476. [security] It was possible to trigger an assertion failure when
verifying the response to a TSIG-signed request.
(CVE-2020-8622) [GL #2028]

5475. [bug] Wildcard RPZ passthru rules could incorrectly be
overridden by other rules that were loaded from RPZ
zones which appeared later in the "response-policy"
statement. This has been fixed. [GL #1619]

5474. [bug] dns_rdata_hip_next() failed to return ISC_R_NOMORE
when it should have. [GL !3880]

5473. [func] The RBT hash table implementation has been changed
to use a faster hash function (HalfSipHash2-4) and
Fibonacci hashing for better distribution. Setting
"max-cache-size" now preallocates a fixed-size hash
table so that rehashing does not cause resolution
brownouts while the hash table is grown. [GL #1775]

5471. [bug] The introduction of KASP support inadvertently caused
the second field of "sig-validity-interval" to always be
calculated in hours, even in cases when it should have
been calculated in days. This has been fixed. (Thanks to
Tony Finch.) [GL !3735]

5469. [port] On illumos, a constant called SEC is already defined in
<sys/time.h>, which conflicts with an identically named
constant in libbind9. This conflict has been resolved.
[GL #1993]

5468. [bug] Addressed potential double unlock in process_fd().
[GL #2005]

5466. [bug] Addressed an error in recursive clients stats reporting.
[GL #1719]

5465. [func] Added fallback to built-in trust-anchors, managed-keys,
or trusted-keys if the bindkeys-file (bind.keys) cannot
be parsed. [GL #1235]

5464. [bug] Requesting more than 128 files to be saved when rolling
dnstap log files caused a buffer overflow. This has been
fixed. [GL #1989]

5462. [bug] Move LMDB locking from LMDB itself to named. [GL #1976]

5461. [bug] The STALE rdataset header attribute was updated while
the write lock was not being held, leading to incorrect
statistics. The header attributes are now converted to
use atomic operations. [GL #1475]

branches: 1.1.1.1.2; 1.1.1.1.4;
Import bind-9.12.2-P2 since bind-9.10 (the last BSD version) is
now out of support. The changes since our last version imported
(9.10.7) version are too big to include inline here; please consult
the CHANGES file in this directory.

branches: 1.1.1.1.2;
Import bind-9.12.2-P2 since bind-9.10 (the last BSD version) is
now out of support. The changes since our last version imported
(9.10.7) version are too big to include inline here; please consult
the CHANGES file in this directory.