CVE-2012-3519 Information

Description

routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen which might allow remote attackers to obtain sensitive information about relay selection via a timing side-channel attack.

Reference

http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html http://openwall.com/lists/oss-security/2012/08/21/6 http://secunia.com/advisories/50583 http://security.gentoo.org/glsa/glsa-201301-03.xml https://gitweb.torproject.org/tor.git/commit/308f6dad20675c42b29862f4269ad1fbfb00dc9a https://gitweb.torproject.org/tor.git/commit/d48cebc5e498b0ae673635f40fc57cdddab45d5b https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html https://trac.torproject.org/projects/tor/ticket/6537