CVE-2014-5117 Information

Description

Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client which makes it easier for remote attackers to conduct traffic-confirmation attacks by using the pattern of RELAY and RELAY_EARLY cells as a means of communicating information about hidden service names.

Reference

http://secunia.com/advisories/60084 http://secunia.com/advisories/60647 https://blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attack https://lists.torproject.org/pipermail/tor-announce/2014-July/000093.html https://lists.torproject.org/pipermail/tor-announce/2014-July/000094.html https://lists.torproject.org/pipermail/tor-talk/2014-July/034180.html https://trac.torproject.org/projects/tor/ticket/1038