FreeBSD : tor -- traffic confirmation attack (31c09848-1829-11e4-bf04-60a44c524f57)

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

The Tor Project reports :

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.

See also :

http://www.nessus.org/u?df0e1d00
http://www.nessus.org/u?df709f16
http://www.nessus.org/u?833e04ab

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 76922 ()

Bugtraq ID:

CVE ID: CVE-2014-5117

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