Unspecified vulnerability in Tor before 0.2.0.34 allows attackers to cause a denial of service (infinite loop) via "corrupt votes."
https://euvd.enisa.europa.eu/vulnerability/EUVD-2009-0933
http://www.securityfocus.com/bid/33713
http://security.gentoo.org/glsa/glsa-200904-11.xml
http://secunia.com/advisories/34583