Security bugs are reported here via bugzilla

[Thomas Houssin <thomas.houssin AT gmail.com>]

Synopsis
========
Tor clients can lose anonymity, confidentiality, and data integrity if
the first Tor server in their path is malicious.

Background
==========
tor is an anonymous Internet communication system.

Description
===========
CAN-2005-2643:
Tor 0.1.0.13 and earlier, and experimental versions 0.1.1.4-alpha and
earlier, does not reject certain weak keys when using ephemeral
Diffie-Hellman (DH) handshakes, which allows malicious Tor servers to
obtain the keys that a client uses for other systems in the circuit.

Affected packages
=================
tor in stable-rc 0.2 and stable 0.1 grimoires is affected. This is now
fixed in all grimoires.

Resolution
==========
All tor users should upgrade to the latest available version:
         # scribe update
         # cast -c tor

References
==========
   [ 1 ] CAN-2005-2643
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2643
   [ 2 ] Tor security advisory: DH handshake flaw
         http://archives.seul.org/or/announce/Aug-2005/msg00002.html


-- 
Thomas Houssin

Security Team Leader Source Mage GNU/Linux (http://www.sourcemage.org)
Key fingerprint = 3CB8 3FC4 840D B272 E623  BCB8 54DB F4E3 4240 4C36
http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x42404C36

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