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Gentoo Linux Security Advisory                           GLSA 200807-07
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  Severity: Normal
     Title: NX: User-assisted execution of arbitrary code
      Date: July 09, 2008
      Bugs: #230147
        ID: 200807-07

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Synopsis
========

NX uses code from the X.org X11 server which is prone to multiple
vulnerabilities.

Background
==========

NoMachine's NX establishes remote connections to X11 desktops over
small bandwidth links. NX and NX Node are the compression core
libraries, whereas NX is used by FreeNX and NX Node by the binary-only
NX servers.

Affected packages
=================

    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  net-misc/nxnode     < 3.2.0-r3                        >= 3.2.0-r3
  2  net-misc/nx         < 3.2.0-r2                        >= 3.2.0-r2
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Multiple integer overflow and buffer overflow vulnerabilities have been
discovered in the X.Org X server as shipped by NX and NX Node (GLSA
200806-07).

Impact
======

A remote attacker could exploit these vulnerabilities via unspecified
vectors, leading to the execution of arbitrary code with the privileges
of the user on the machine running the NX server.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All NX Node users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/nxnode-3.2.0-r3"

All NX users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/nx-3.2.0-r2"

References
==========

  [ 1 ] GLSA 200806-07
        http://www.gentoo.org/security/en/glsa/glsa-200806-07.xml

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

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

  http://security.gentoo.org/glsa/glsa-200807-07.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
http://bugs.gentoo.org.

License
=======

Copyright 2008 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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