[BSA-014] New Tor packages fix potential code execution

Willem Pinckaers discovered that Tor, a tool to enable online anonymity,
does not correctly handle all data read from the network. By supplying
specially crafted packets a remote attacker can cause Tor to overflow
its heap, crashing the process in turn. Arbitrary code execution has
not been confirmed but also cannot be ruled out completely.

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

For the lenny-backports archive this problem has been fixed in
version 0.2.1.26-6~bpo50+1.

For the stable distribution (lenny) this problem has been fixed in
version 0.2.1.26-1~lenny+3 (DSA-2136-1).

For the testing distribution (squeeze) and unstable distribution (sid)
this problem has been fixed in version 0.2.1.26-6.

Upgrade instructions

If you don't use pinning (see [1]) you have to update the package
manually via "apt-get -t lenny-backports install <packagelist>" with
the packagelist of your installed packages affected by this update.
[1] <http://backports.debian.org/Instructions&gt;

We recommend to pin (in /etc/apt/preferences) the backports repository to
200 so that new versions of installed backports will be installed
automatically.

Package: *
Pin: release a=lenny-backports
Pin-Priority: 200