[ GLSA 201110-13 ] Tor: Multiple vulnerabilities

[Tim Sammut <underling () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 201110-13
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                                            http://security.gentoo.org/
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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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