[tor-talk] Tor 0.3.5.5-alpha is released

[Nick Mathewson <nickm@xxxxxxxxxxxxxx>]

Hi, all!
There's a new alpha Tor release! Because it's an alpha, you should
only run it if you're ready to find more bugs than usual, and report
them on trac.torproject.org.

The source code is available from the downlaod page on
www.torproject.org; if you build Tor from source, why not give it a
try? And if you don't build Tor from source, packages should be ready
over the coming days, with a Tor Browser alpha release likely by the
end of next week.

Here's what's new:

Changes in version 0.3.5.5-alpha - 2018-11-16
  Tor 0.3.5.5-alpha includes numerous bugfixes on earlier releases,
  including several that we hope to backport to older release series in
  the future.

  o Major bugfixes (OpenSSL, portability):
    - Fix our usage of named groups when running as a TLS 1.3 client in
      OpenSSL 1.1.1. Previously, we only initialized EC groups when
      running as a relay, which caused clients to fail to negotiate TLS
      1.3 with relays. Fixes bug 28245; bugfix on 0.2.9.15 (when TLS 1.3
      support was added).

  o Minor features (geoip):
    - Update geoip and geoip6 to the November 6 2018 Maxmind GeoLite2
      Country database. Closes ticket 28395.

  o Minor bugfixes (compilation):
    - Initialize a variable unconditionally in aes_new_cipher(), since
      some compilers cannot tell that we always initialize it before
      use. Fixes bug 28413; bugfix on 0.2.9.3-alpha.

  o Minor bugfixes (connection, relay):
    - Avoid a logging a BUG() stacktrace when closing connection held
      open because the write side is rate limited but not the read side.
      Now, the connection read side is simply shut down until Tor is
      able to flush the connection and close it. Fixes bug 27750; bugfix
      on 0.3.4.1-alpha.

  o Minor bugfixes (continuous integration, Windows):
    - Manually configure the zstd compiler options, when building using
      mingw on Appveyor Windows CI. The MSYS2 mingw zstd package does
      not come with a pkg-config file. Fixes bug 28454; bugfix
      on 0.3.4.1-alpha.
    - Stop using an external OpenSSL install, and stop installing MSYS2
      packages, when building using mingw on Appveyor Windows CI. Fixes
      bug 28399; bugfix on 0.3.4.1-alpha.

  o Minor bugfixes (documentation):
    - Make Doxygen work again after the code movement in the 0.3.5
      source tree. Fixes bug 28435; bugfix on 0.3.5.1-alpha.

  o Minor bugfixes (Linux seccomp2 sandbox):
    - Permit the "shutdown()" system call, which is apparently used by
      OpenSSL under some circumstances. Fixes bug 28183; bugfix
      on 0.2.5.1-alpha.

  o Minor bugfixes (logging):
    - Stop talking about the Named flag in log messages. Clients have
      ignored the Named flag since 0.3.2. Fixes bug 28441; bugfix
      on 0.3.2.1-alpha.

  o Minor bugfixes (memory leaks):
    - Fix a harmless memory leak in libtorrunner.a. Fixes bug 28419;
      bugfix on 0.3.3.1-alpha. Patch from Martin Kepplinger.

  o Minor bugfixes (onion services):
    - On an intro point for a version 3 onion service, stop closing
      introduction circuits on an NACK. This lets the client decide
      whether to reuse the circuit or discard it. Previously, we closed
      intro circuits when sending NACKs. Fixes bug 27841; bugfix on
      0.3.2.1-alpha. Patch by Neel Chaunan.
    - When replacing a descriptor in the client cache, make sure to
      close all client introduction circuits for the old descriptor, so
      we don't end up with unusable leftover circuits. Fixes bug 27471;
      bugfix on 0.3.2.1-alpha.
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