Unbound 1.13.0rc2 pre-release

Wouter Wijngaards wouter at nlnetlabs.nl
Wed Nov 25 13:31:37 UTC 2020 

Hi,

Unbound 1.13.0rc2 pre-release is available:
https://nlnetlabs.nl/downloads/unbound/unbound-1.13.0rc2.tar.gz
sha256 63a626a301fe11d4aaf5990f0d46c645d7c99262ead76a9066e3515179f71417
pgp https://nlnetlabs.nl/downloads/unbound/unbound-1.13.0rc2.tar.gz.asc

This RC2 fixes bugs that were reported on the RC1 candidate.

Bug Fixes
- Fix crash when TLS connection is closed prematurely, when
  reuse tree comparison is not properly identical to insertion.
- Fix padding of struct regional for 32bit systems.
- with udp-connect ignore connection refused with UDP timeouts.
- Fix udp-connect on FreeBSD, do send calls on connected UDP socket.
- Better fix for reuse tree comparison for is-tls sockets.  Where
  the tree key identity is preserved after cleanup of the TLS state.
- Fix memory leak for edns client tag opcode config element.
- Attempt fix for libevent state in tcp reuse cases after a packet
  is written.
- Fix readagain and writeagain callback functions for comm point
  cleanup.

Best regards, Wouter

On 24/11/2020 15:28, Wouter Wijngaards via maintainers wrote:
> Hi,
> 
> Unbound 1.13.0rc1 pre-release is available:
> https://nlnetlabs.nl/downloads/unbound/unbound-1.13.0rc1.tar.gz
> sha256 a55e8b5dfc290867017e7fbb75f1023ee2f6234943f870a5c24694b0908d7c17
> pgp https://nlnetlabs.nl/downloads/unbound/unbound-1.13.0rc1.tar.gz.asc
> 
> 
> This version has fixes to connect for UDP sockets, slowing down
> potential ICMP side channel leakage.  The fix can be controlled with the
> option udp-connect: yes, it is enabled by default.
> 
> Additionally CVE-2020-28935 is fixed, this solves a problem where the
> pidfile is altered by a symlink, and fails if a symlink is encountered.
> See https://nlnetlabs.nl/downloads/unbound/CVE-2020-28935.txt for more
> information.
> 
> New features are upstream TCP and TLS query reuse, where a channel is
> reused for several queries.  And http-notls-downstream: yesno for
> unencrypted DoH, useful for back end support servers.  The option
> infra-keep-probing can be used to probe hosts that are down more
> frequently.
> 
> The options edns-client-string and edns-client-string-opcode can be used
> to add an EDNS option with the specified string in queries towards
> servers, with the servers specified by IP address.  It replaces the
> edns-client-tag option.
> 
> Features
> - Pass the comm_reply information to the inplace_cb_reply* functions
>   during the mesh state and update the documentation on that.
> - Fix #330: [Feature request] Add unencrypted DNS over HTTPS support.
>   This adds the option http-notls-downstream: yesno to change that,
>   and the dohclient test code has the -n option.
> - Merge PR #228 : infra-keep-probing option to probe hosts that are
>   down.  Add infra-keep-probing: yes option. Hosts that are down are
>   probed more frequently.
>   With the option turned on, it probes about every 120 seconds,
>   eventually after exponential backoff, and that keeps that way. If
>   traffic keeps up for the domain. It probes with one at a time, eg.
>   one query is allowed to probe, other queries within that 120 second
>   interval are turned away.
> - Merge PR #313 from Ralph Dolmans: Replace edns-client-tag with
>   edns-client-string option.
> - Merge PR #283 : Stream reuse.  This implements upstream stream
>   reuse for performing several queries over the same TCP or TLS
>   channel.
> - Fix to connect() to UDP destinations, default turned on,
>   this lowers vulnerability to ICMP side channels.
>   Option to toggle udp-connect, default is enabled.
> 
> Bug Fixes
> - Fix #319: potential memory leak on config failure, in rpz config.
> - Fix dnstap socket and the chroot not applied properly to the dnstap
>   socket path.
> - Fix warning in libnss compile, nss_buf2dsa is not used without DSA.
> - Fix #323: unbound testsuite fails on mock build in systemd-nspawn
>   if systemd support is build.
> - Fix for python reply callback to see mesh state reply_list member,
>   it only removes it briefly for the commpoint call so that it does
>   not drop it and attempt to modify the reply list during reply.
> - Fix that if there are on reply callbacks, those are called per
>   reply and a new message created if that was modified by the call.
> - Free up auth zone parse region after use for lookup of host
> - Merge PR #326 from netblue30: DoH: implement content-length
>   header field.
> - DoH content length, simplify code, remove declaration after
>   statement and fix cast warning.
> - Fix that if there are reply callbacks for the given rcode, those
>   are called per reply and a new message created if that was modified
>   by the call.
> - Fix that the out of order TCP processing does not limit the
>   number of outstanding queries over a connection.
> - Fix python documentation warning on functions.rst inplace_cb_reply.
> - Log ip address when http session recv fails, eg. due to tls fail.
> - Fix to set the tcp handler event toggle flag back to default when
>   the handler structure is reused.
> - Clean the fix for out of order TCP processing limits on number
>   of queries.  It was tested to work.
> - Fix that http settings have colon in set_option, for
>   http-endpoint, http-max-streams, http-query-buffer-size,
>   http-response-buffer-size, and http-nodelay.
> - Fix memory leak of https port string when reading config.
> - local-zone regional allocations outside of chunk
> - Merge PR #324 from James Renken: Add modern X.509v3 extensions to
>   unbound-control TLS certificates.
> - Fix for PR #324 to attach the x509v3 extensions to the client
>   certificate.
> - Fix #327: net/if.h check fails on some darwin versions; contribution by
>   Joshua Root.
> - Fix #320: potential memory corruption due to size miscomputation upton
>   custom region alloc init.
> - Fix #333: Unbound Segmentation Fault w/ log_info Functions From
>   Python Mod.
> - Fix that minimal-responses does not remove addresses from a priming
>   query response.
> - In man page note that tls-cert-bundle is read before permission
>   drop and chroot.
> - Fix #341: fixing a possible memory leak.
> - Fix memory leak after fix for possible memory leak failure.
> - Fix #343: Fail to build --with-libnghttp2 with error: 'SSIZE_MAX'
>   undeclared.
> - Fix for #303 CVE-2020-28935 : Fix that symlink does not interfere
>   with chown of pidfile.
> - Fix #347: IP_DONTFRAG broken on Apple xcode 12.2.
> - Fix #350: with the AF_NETLINK permission, to fix 1.12.0 error:
>   failed to list interfaces: getifaddrs: Address family not
>   supported by protocol.
> - Merge #351 from dvzrv: Add AF_NETLINK to set of allowed socket
>   address families.
> - iana portlist updated.
> 
> Best regards, Wouter
> 
> 
> _______________________________________________
> maintainers mailing list
> maintainers at lists.nlnetlabs.nl
> https://lists.nlnetlabs.nl/mailman/listinfo/maintainers
> 

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