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Gentoo: 201309-24 Xen: Multiple vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Gentoo Multiple vulnerabilities have been found in Xen, allowing attackers on a Xen Virtual Machine to execute arbitrary code, cause Denial of Service, or gain access to data on the host.
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Gentoo Linux Security Advisory                           GLSA 201309-24
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                                            http://security.gentoo.org/
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 Severity: High
    Title: Xen: Multiple vulnerabilities
     Date: September 27, 2013
     Bugs: #385319, #386371, #420875, #431156, #454314, #464724,
           #472214, #482860
       ID: 201309-24

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Synopsis
========

Multiple vulnerabilities have been found in Xen, allowing attackers on
a Xen Virtual Machine to execute arbitrary code, cause Denial of
Service, or gain access to data on the host.

Background
==========

Xen is a bare-metal hypervisor.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-emulation/xen           < 4.2.2-r1               >= 4.2.2-r1
  2  app-emulation/xen-tools     < 4.2.2-r3               >= 4.2.2-r3
  3  app-emulation/xen-pvgrub
                                 < 4.2.2-r1               >= 4.2.2-r1
    -------------------------------------------------------------------
     3 affected packages

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

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

Impact
======

Guest domains could possibly gain privileges, execute arbitrary code,
or cause a Denial of Service on the host domain (Dom0). Additionally,
guest domains could gain information about other virtual machines
running on the same host or read arbitrary files on the host.

Workaround
==========

The CVEs listed below do not currently have fixes, but only apply to
Xen setups which have "tmem" specified on the hypervisor command line.
TMEM is not currently supported for use in production systems, and
administrators using tmem should disable it.
Relevant CVEs:
* CVE-2012-2497
* CVE-2012-6030
* CVE-2012-6031
* CVE-2012-6032
* CVE-2012-6033
* CVE-2012-6034
* CVE-2012-6035
* CVE-2012-6036

Resolution
==========

All Xen users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.2.2-r1"

All Xen-tools users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.2.2-r3"

All Xen-pvgrub users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=app-emulation/xen-pvgrub-4.2.2-r1"

References
==========

[  1 ] CVE-2011-2901
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2901
[  2 ] CVE-2011-3262
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3262
[  3 ] CVE-2011-3262
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3262
[  4 ] CVE-2012-0217
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0217
[  5 ] CVE-2012-0218
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0218
[  6 ] CVE-2012-2934
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2934
[  7 ] CVE-2012-3432
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3432
[  8 ] CVE-2012-3433
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3433
[  9 ] CVE-2012-3494
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3494
[ 10 ] CVE-2012-3495
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3495
[ 11 ] CVE-2012-3496
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3496
[ 12 ] CVE-2012-3497
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3497
[ 13 ] CVE-2012-3498
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3498
[ 14 ] CVE-2012-3515
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3515
[ 15 ] CVE-2012-4411
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4411
[ 16 ] CVE-2012-4535
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4535
[ 17 ] CVE-2012-4536
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4536
[ 18 ] CVE-2012-4537
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4537
[ 19 ] CVE-2012-4538
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4538
[ 20 ] CVE-2012-4539
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4539
[ 21 ] CVE-2012-5510
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5510
[ 22 ] CVE-2012-5511
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5511
[ 23 ] CVE-2012-5512
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5512
[ 24 ] CVE-2012-5513
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5513
[ 25 ] CVE-2012-5514
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5514
[ 26 ] CVE-2012-5515
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5515
[ 27 ] CVE-2012-5525
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5525
[ 28 ] CVE-2012-5634
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-5634
[ 29 ] CVE-2012-6030
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6030
[ 30 ] CVE-2012-6031
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6031
[ 31 ] CVE-2012-6032
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6032
[ 32 ] CVE-2012-6033
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6033
[ 33 ] CVE-2012-6034
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6034
[ 34 ] CVE-2012-6035
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6035
[ 35 ] CVE-2012-6036
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6036
[ 36 ] CVE-2012-6075
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6075
[ 37 ] CVE-2012-6333
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6333
[ 38 ] CVE-2013-0151
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0151
[ 39 ] CVE-2013-0152
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0152
[ 40 ] CVE-2013-0153
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0153
[ 41 ] CVE-2013-0154
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0154
[ 42 ] CVE-2013-0215
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-0215
[ 43 ] CVE-2013-1432
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1432
[ 44 ] CVE-2013-1917
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1917
[ 45 ] CVE-2013-1918
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1918
[ 46 ] CVE-2013-1919
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1919
[ 47 ] CVE-2013-1920
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1920
[ 48 ] CVE-2013-1922
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1922
[ 49 ] CVE-2013-1952
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1952
[ 50 ] CVE-2013-1964
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1964
[ 51 ] CVE-2013-2076
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2076
[ 52 ] CVE-2013-2077
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2077
[ 53 ] CVE-2013-2078
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2078
[ 54 ] CVE-2013-2194
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2194
[ 55 ] CVE-2013-2195
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2195
[ 56 ] CVE-2013-2196
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2196
[ 57 ] CVE-2013-2211
       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2211
[ 58 ] Xen TMEM
       http://lists.xen.org/archives/html/xen-announce/2012-09/msg00006.html

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

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

 http://security.gentoo.org/glsa/glsa-201309-24.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 2013 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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