Bug 153326

Tor 0.2.1.28 does some code cleanup to reduce the risk of remotely
exploitable bugs. 

The Common Vulnerabilities and Exposures project has assigned
CVE-2010-1676 to this issue.

All Tor users should upgrade.

Changes in version 0.2.1.28 - 2010-12-17
  o Major bugfixes:
    - Fix a remotely exploitable bug that could be used to crash instances
      of Tor remotely by overflowing on the heap. Remote-code execution
      hasn't been confirmed, but can't be ruled out. Everyone should
      upgrade. Bugfix on the 0.1.1 series and later.

  o Directory authority changes:
    - Change IP address and ports for gabelmoo (v3 directory authority).

  o Minor features:
    - Update to the December 1 2010 Maxmind GeoLite Country database.

Changes in version 0.2.1.27 - 2010-11-23
  o Major bugfixes:
    - Resolve an incompatibility with OpenSSL 0.9.8p and OpenSSL 1.0.0b:
      No longer set the tlsext_host_name extension on server SSL objects;
      but continue to set it on client SSL objects. Our goal in setting
      it was to imitate a browser, not a vhosting server. Fixes bug 2204;
      bugfix on 0.2.1.1-alpha.
    - Do not log messages to the controller while shrinking buffer
      freelists. Doing so would sometimes make the controller connection
      try to allocate a buffer chunk, which would mess up the internals
      of the freelist and cause an assertion failure. Fixes bug 1125;
      fixed by Robert Ransom. Bugfix on 0.2.0.16-alpha.
    - Learn our external IP address when we're a relay or bridge, even if
      we set PublishServerDescriptor to 0. Bugfix on 0.2.0.3-alpha,
      where we introduced bridge relays that don't need to publish to
      be useful. Fixes bug 2050.
    - Do even more to reject (and not just ignore) annotations on
      router descriptors received anywhere but from the cache. Previously
      we would ignore such annotations at first, but cache them to disk
      anyway. Bugfix on 0.2.0.8-alpha. Found by piebeer.
    - When you're using bridges and your network goes away and your
      bridges get marked as down, recover when you attempt a new socks
      connection (if the network is back), rather than waiting up to an
      hour to try fetching new descriptors for your bridges. Bugfix on
      0.2.0.3-alpha; fixes bug 1981.

  o Major features:
    - Move to the November 2010 Maxmind GeoLite country db (rather
      than the June 2009 ip-to-country GeoIP db) for our statistics that
      count how many users relays are seeing from each country. Now we'll
      have more accurate data, especially for many African countries.

  o New directory authorities:
    - Set up maatuska (run by Linus Nordberg) as the eighth v3 directory
      authority.

  o Minor bugfixes:
    - Fix an assertion failure that could occur in directory caches or
      bridge users when using a very short voting interval on a testing
      network. Diagnosed by Robert Hogan. Fixes bug 1141; bugfix on
      0.2.0.8-alpha.
    - Enforce multiplicity rules when parsing annotations. Bugfix on
      0.2.0.8-alpha. Found by piebeer.
    - Allow handshaking OR connections to take a full KeepalivePeriod
      seconds to handshake. Previously, we would close them after
      IDLE_OR_CONN_TIMEOUT (180) seconds, the same timeout as if they
      were open. Bugfix on 0.2.1.26; fixes bug 1840. Thanks to mingw-san
      for analysis help.
    - When building with --enable-gcc-warnings on OpenBSD, disable
      warnings in system headers. This makes --enable-gcc-warnings
      pass on OpenBSD 4.8.

  o Minor features:
    - Exit nodes didn't recognize EHOSTUNREACH as a plausible error code,
      and so sent back END_STREAM_REASON_MISC. Clients now recognize a new
      stream ending reason for this case: END_STREAM_REASON_NOROUTE.
      Servers can start sending this code when enough clients recognize
      it. Bugfix on 0.1.0.1-rc; fixes part of bug 1793.
    - Build correctly on mingw with more recent versions of OpenSSL 0.9.8.
      Patch from mingw-san.

  o Removed files:
    - Remove the old debian/ directory from the main Tor distribution.
      The official Tor-for-debian git repository lives at the URL
      https://git.torproject.org/debian/tor.git
    - Stop shipping the old doc/website/ directory in the tarball. We
      changed the website format in late 2010, and what we shipped in
      0.2.1.26 really wasn't that useful anyway.


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