Fedora 29: FEDORA-2019-20f95b0b39 Critical: Knot-Resolver Input Issues

The Knot Resolver is a DNSSEC-enabled caching full resolver implementation

written in C and LuaJIT, including both a resolver library and a daemon.

Modular architecture of the library keeps the core tiny and efficient, and

provides a state-machine like API for extensions.

The package is pre-configured as local caching resolver.

To start using it, start a single kresd instance:

$ systemctl start kresd@1.service

* Wed Jul 10 2019 Tomas Krizek - 4.1.0-1

- update to new upstream version 4.1.0

- add kres-cache-gc.service

* Wed May 29 2019 Tomas Krizek - 4.0.0.-1

- rebase to new upstream release 4.0.0

- bump Knot DNS libraries to 2.8 (ABI compat)

- use new upstream build system - meson

- add knot-resolver-module-http package along with new lua dependecies

* Fri Feb 1 2019 Fedora Release Engineering - 3.2.1-2

- Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild

* Thu Jan 10 2019 Tomas Krizek - 3.2.1-1

Knot Resolver 3.2.1 (2019-01-10)

===============================

Bugfixes

--------- trust_anchors: respect validity time range during TA bootstrap (!748)

- fix TLS rehandshake handling (!739)

- make TLS_FORWARD compatible with GnuTLS 3.3 (!741)

- special thanks to Grigorii Demidov for his long-term work on Knot Resolver!

Improvements

------------- improve handling of timeouted outgoing TCP connections (!734)

- trust_anchors: check syntax of public keys in DNSKEY RRs (!748)

- validator: clarify message about bogus non-authoritative data (!735)

- dnssec validation failures contain more verbose reasoning (!735)

- new function trust_anchors.summary() describes state of DNSSEC TAs (!737),

and logs new state of trust anchors after start up and automatic changes

- trust anchors: refuse revoked DNSKEY even if specified explicitly,

and downgrade missing the SEP bit to a warning

* Mon Dec 17 2018 Tomas Krizek - 3.2.0-1

Knot Resolver 3.2.0 (2018-12-17)

===============================

New features

------------- module edns_keepalive to implement server side of RFC 7828 (#408)

- module nsid to implement server side of RFC 5001 (#289)

- module bogus_log provides .frequent() table (!629, credit Ulrich Wisser)

- module stats collects flags from answer messages (!629, credit Ulrich Wisser)

- module view supports multiple rules with identical address/TSIG specification

and keeps trying rules until a "non-chain" action is executed (!678)

- module experimental_dot_auth implements an DNS-over-TLS to auth protocol

(!711, credit Manu Bretelle)

- net.bpf bindings allow advanced users to use eBPF socket filters

Bugfixes

--------- http module: only run prometheus in parent process if using --forks=N,

as the submodule collects metrics from all sub-processes as well.

- TLS fixes for corner cases (!700, !714, !716, !721, !728)

- fix build with -DNOVERBOSELOG (#424)

- policy.{FORWARD,TLS_FORWARD,STUB}: respect net.ipv{4,6} setting (!710)

- avoid SERVFAILs due to certain kind of NS dependency cycles, again

(#374) this time seen as 'circular dependency' in verbose logs

- policy and view modules do not overwrite result finished requests (!678)

Improvements

------------- Dockerfile: rework, basing on Debian instead of Alpine

- policy.{FORWARD,TLS_FORWARD,STUB}: give advantage to IPv6

when choosing whom to ask, just as for iteration

- use pseudo-randomness from gnutls instead of internal ISAAC (#233)

- tune the way we deal with non-responsive servers (!716, !723)

- documentation clarifies interaction between policy and view modules (!678, !730)

Module API changes

------------------- new layer is added: answer_finalize

- kr_request keeps ::qsource.packet beyond the begin layer

- kr_request::qsource.tcp renamed to ::qsource.flags.tcp

- kr_request::has_tls renamed to ::qsource.flags.tls

- kr_zonecut_add(), kr_zonecut_del() and kr_nsrep_sort() changed parameters slightly

* Fri Nov 2 2018 Tomas Krizek - 3.1.0-1

Knot Resolver 3.1.0 (2018-11-02)

===============================

Incompatible changes

--------------------- hints.use_nodata(true) by default; that's what most users want

- libknot >= 2.7.2 is required

Improvements

------------- cache: handle out-of-space SIGBUS slightly better (#197)

- daemon: improve TCP timeout handling (!686)

Bugfixes

--------- cache.clear('name'): fix some edge cases in API (#401)

- fix error handling from TLS writes (!669)

- avoid SERVFAILs due to certain kind of NS dependency cycles (#374)

[ 1 ] Bug #1727211 - CVE-2019-10191 knot-resolver: improper input validation in DNS resolver allows remote attacker to poison cache by unsigned negative answer

https://bugzilla.redhat.com/show_bug.cgi?id=1727211

[ 2 ] Bug #1727208 - CVE-2019-10190 knot-resolver: improper input validation in DNS resolver allows remote attacker to bypass DNSSEC validation

https://bugzilla.redhat.com/show_bug.cgi?id=1727208

su -c 'dnf upgrade --advisory FEDORA-2019-20f95b0b39' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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