Tor 0.2.2.20-alpha is out (security patches)

Tor 0.2.2.20-alpha does some code cleanup to reduce the risk of remotely
exploitable bugs. Thanks to Willem Pinckaers for notifying us of the
issue. The Common Vulnerabilities and Exposures project has assigned
CVE-2010-1676 to this issue.

We also fix a variety of other significant bugs, change the IP address
for one of our directory authorities, and update the minimum version
that Tor relays must run to join the network.

All Tor users should upgrade.

https://www.torproject.org/download/download

Changes in version 0.2.2.20-alpha - 2010-12-17
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.
• Fix a bug that could break accounting on 64-bit systems with large
  time_t values, making them hibernate for impossibly long intervals.
  Fixes bug 2146. Bugfix on 0.0.9pre6; fix by boboper.
• Fix a logic error in directory_fetches_from_authorities() that
  would cause all _non_-exits refusing single-hop-like circuits
  to fetch from authorities, when we wanted to have _exits_ fetch
  from authorities. Fixes more of 2097. Bugfix on 0.2.2.16-alpha;
  fix by boboper.
• Fix a stream fairness bug that would cause newer streams on a given
  circuit to get preference when reading bytes from the origin or
  destination. Fixes bug 2210. Fix by Mashael AlSabah. This bug was
  introduced before the first Tor release, in svn revision r152.

Directory authority changes:

• Change IP address and ports for gabelmoo (v3 directory authority).

Minor bugfixes:

• Avoid crashes when AccountingMax is set on clients. Fixes bug 2235.
  Bugfix on 0.2.2.18-alpha. Diagnosed by boboper.
• Fix an off-by-one error in calculating some controller command
  argument lengths. Fortunately, this mistake is harmless since
  the controller code does redundant NUL termination too. Found by
  boboper. Bugfix on 0.1.1.1-alpha.
• Do not dereference NULL if a bridge fails to build its
  extra-info descriptor. Found by an anonymous commenter on
  Trac. Bugfix on 0.2.2.19-alpha.

Minor features:

• Update to the December 1 2010 Maxmind GeoLite Country database.
• Directory authorities now reject relays running any versions of
  Tor between 0.2.1.3-alpha and 0.2.1.18 inclusive; they have
  known bugs that keep RELAY_EARLY cells from working on rendezvous
  circuits. Followup to fix for bug 2081.
• Directory authorities now reject relays running any version of Tor
  older than 0.2.0.26-rc. That version is the earliest that fetches
  current directory information correctly. Fixes bug 2156.
• Report only the top 10 ports in exit-port stats in order not to
  exceed the maximum extra-info descriptor length of 50 KB. Implements
  task 2196.