[Full-disclosure] [ GLSA 201201-07 ] NX Server Free Edition, NX Node: Privilege escalation

[Sean Amoss]

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Gentoo Linux Security Advisory                           GLSA 201201-07
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                                            http://security.gentoo.org/
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 Severity: High
    Title: NX Server Free Edition, NX Node: Privilege escalation
     Date: January 23, 2012
     Bugs: #378345
       ID: 201201-07

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Synopsis
========

An unspecified vulnerability in NX Server Free Edition and NX Node
could allow local attackers to gain root privileges.

Background
==========

NX Server Free Edition is a remote display technology by No Machine. NX
Node provides the shared components for NX Server.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-misc/nxserver-freeedition
                                 < 3.5.0.5                 >= 3.5.0.5
  2  net-misc/nxnode             < 3.5.0.4                 >= 3.5.0.4
    -------------------------------------------------------------------
     2 affected packages

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

NX Server Free Edition and NX Node use nxconfigure.sh, a setuid script
containing an unspecified vulnerability.

Impact
======

A local attacker could gain escalated privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All NX Server Free Edition users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=net-misc/nxserver-freeedition-3.5.0.5"

All NX Node users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-misc/nxnode-3.5.0.4"

NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since August 23, 2011. It is likely that your system is
already no longer affected by this issue.

References
==========

[ 1 ] CVE-2011-3977
      http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-3977

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

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

 http://security.gentoo.org/glsa/glsa-201201-07.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 at gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2012 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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