Software Update: Unbound 1.14.0

When you perform a dns lookup, a recursor initially starts by asking the lookup query to a dns root server. This can then redirect to other servers, from where it can redirect to other servers and so on, until finally a server is reached that knows the answer or knows that the look-up is not possible. The latter can be the case if the name does not exist or the servers do not respond. The process of going through different authoritative servers is called recursion. Unbound is a dns recursor with support for modern standards such as Query Name Minimization† Aggressive Use of Dnssec-Validated Cache and authority zones† The developers have released version 1.14.0 with the following changes and improvements:

New Features:

• merge #401: RPZ triggers. This add additional RPZ triggers, unbound supports a full set of rpz triggers, and this now includes nsdname, nsip and clientip triggers. Also actions are fully supported, and this now includes the tcp-only action.
• merge #519: Support for selective enabling tcp-upstream for stub/forward zones.
• Merge PR #514from ziollek: Docker environment for run tests.
• Support using system-wide crypto policies.
• Fix that –with-ssl can use “/usr/include/openssl11” to pass the location of a different openssl version.
• merged #41 from Moritz Schneider: made outbound-msg-retry configurable.
• Implement RFC8375: Special-Use Domain ‘home.arpa.’.
• Merge PR #555 from fobser: Allow interface names as scope-id in IPv6 link-local addresses.

Bug Fixes:

• Add test tool readzone to .gitignore.
• merge #521: Update mini_event.c.
• merge #523: fix: free() call more than once with the same pointer.
• for #519: note stub-tcp-upstream and forward-tcp-upstream in the example configuration file.
• for #519: yacc and lex. And fix python bindings, and test program unbound-dnstap-socket.
• for #519: fix comments for doxygen.
• Fix to print error from unbound-anchor for writing to the key file, also when not verbose.
• for #514: generate configure.
• fix for #431: Squelch permission denied errors for udp connect, and udp send, they are visible at higher verbosity settings.
• Fix zonemd verification of key that is not in DNS but in the zone and needs a chain of trust.
• zonemd, fix order or bogus printout string manipulation.
• Fix to support harden-algo-downgrade for ZONEMD dnssec checks.
• Merge PR #528 from fobser: Make sldns_str2wire_svcparam_buf() static.
• fix #527: not sending quad9 cert to syslog (and may be more).
• Fix sed script in ssldir split handling.
• fix #529: Fix: log_asset does nothing if UNBOUND_DEBUG is undefined.
• fix #531: Fix: passed to proc after free.
• fix #536: error: RPZ: name of record (drop.spamhaus.org.rpz.local.) to insert into RPZ.
• Fix the stream wait stream_wait_count_lock and http2 buffer locks setup and desetup from race condition.
• Fix RPZ locks. Do not unlock zones lock if requested and rpz find zone does not find the zone. Readlock the clientip that is found for ipbased triggers. Unlock the nsdname zone lock when done. Unlock zone and ip in rpz nsip and nsdname callback. Unlock authzone and localzone if clientip found in rpz worker call.
• Fix compile warning in libunbound for listen desetup routine.
• Fix asynclook unit test for setup of lockchecks before log.
• fix #533: Negative responses get cached even when setting cache-max-negative-ttl: 1
• Fix tcp fastopen failure when disabled, try normal connect instead.
• fix #538: Fix subnet cache statistics.
• Small fixes for #41: changelog, conflicts resolved, processQueryResponse takes an iterator env argument like other functions in the iterator, no colon in string for set_option, and some whitespace style, to make it similar to the rest.
• fix for #41: change outbound retry to int to fix signed comparison warnings.
• Fix root_anchor test to check with new icannbundle date.
• Fix initialization errors reported by gcc sanitizer.
• Fix lock debug code for gcc sanitizer reports.
• Fix more initialization errors reported by gcc sanitizer.
• Fix crosscompile on windows to work with openssl 3.0.0 the link with ws2_32 needs -l:libssp.a for __strcpy_chk. Also copy results from lib64 directory if needed.
• For crosscompile on windows, detect 64bit stackprotector library.
• Fix crosscompile shell syntax.
• Fix crosscompile windows to use libssp when it exists.
• For the windows compile script disable gost.
• Fix that on windows, use BIO_set_callback_ex instead of deprecated BIO_set_callback.
• Fix crosscompile script for the shared build flags.
• Fix to add example.conf note for outbound-msg-retry.
• Fix chaos replies to have truncation for short message lengths, or long reply strings.
• Fix to protect custom regional create against small values.
• fix #552: Unbound assumes index.html exists on RPZ host.
• Fix that forward-zone name is documented as the full name of the zone. It is not relative but a fully qualified domain name.
• Fix analyzer review failure in rpz action override code to not crash on unlocking the local zone lock.
• Fix to remove unused code from rpz resolve client and action function.
• merge #565: unbound.service.in: Disable ProtectKernelTunables again.
• fix for #558: fix loop in comm_point->tcp_free when a comm_point is reclaimed more than once during callbacks.
• fix for #558: clear the UB_EV_TIMEOUT bit before adding an event.
• Improve EDNS option handling, now also works for synthesized responses such as local-data and server.id CH TXT responses.
• Merge PR #570 from rex4539: Fix typos.
• fix for #570: regen aclocal.m4, fix configure.ac for spelling.
• Fix to make python module opt_list use opt_list_in.
• fix #574: unbound-checkconf reports fatal error if interface names are used as value for interfaces:
• fix #574: Review fixes for it.
• fix #576† [FR] UB_* error codes in unbound.h
• fix #574: Review fix for spelling.
• Fix to remove git tracking and ci information from release tarballs.
• iana port list update.
• Merge PR #511 from yan12125: Reduce unnecessary linking.
• Merge PR #493 from Jaap: Fix generation of libunbound.pc.
• Merge PR #562 from Willem: Reset keepalive per new tcp session.
• Merge PR #522 from sibeream: memory management violations fixed.
• Merge PR #530 from Shchelk: Fix: dereferencing a null pointer.
• fix #454: listen_dnsport.c:825: error: ‘IPV6_TCLASS’ undeclared.
• fix #574: Review fixes for size allocation.
• Fix doc/unbound.doxygen to remove obsolete tag warning.