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Gentoo Linux Security Advisory                           GLSA 201110-13
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 Severity: High
    Title: Tor: Multiple vulnerabilities
     Date: October 18, 2011
     Bugs: #351920, #359789
       ID: 201110-13

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Synopsis
========

Multiple vulnerabilities were found in Tor, the most severe of which
may allow a remote attacker to execute arbitrary code.

Background
==========

Tor is an implementation of second generation Onion Routing, a
connection-oriented anonymizing communication service.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-misc/tor                < 0.2.1.30               >= 0.2.1.30

Description
===========

Multiple vulnerabilities have been discovered in Tor. Please review the
CVE identifiers referenced below for details.

Impact
======

A remote unauthenticated attacker may be able to execute arbitrary code
with the privileges of the Tor process or create a Denial of Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Tor users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.1.30"

NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since April 2, 2011. It is likely that your system is already
no longer affected by this issue.

References
==========

[ 1 ] CVE-2011-0015
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0015
[ 2 ] CVE-2011-0016
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0016
[ 3 ] CVE-2011-0427
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0427
[ 4 ] CVE-2011-0490
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0490
[ 5 ] CVE-2011-0491
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0491
[ 6 ] CVE-2011-0492
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0492
[ 7 ] CVE-2011-0493
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0493
[ 8 ] CVE-2011-1924
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1924

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 http://security.gentoo.org/glsa/glsa-201110-13.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2011 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


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