Unspecified vulnerability in Tor before 0.2.0.33 has unspecified impact and remote attack vectors that trigger heap corruption.
https://www.redhat.com/archives/fedora-package-announce/2009-January/msg00902.html
http://www.vupen.com/english/advisories/2009/0210
http://www.securitytracker.com/id?1021633
http://www.securityfocus.com/bid/33399
http://security.gentoo.org/glsa/glsa-200904-11.xml
http://secunia.com/advisories/34583
http://secunia.com/advisories/33677
http://secunia.com/advisories/33635
http://blog.torproject.org/blog/tor-0.2.0.33-stable-released