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Gentoo Linux Security Advisory                           GLSA 200707-08
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: NVClock: Insecure file usage
      Date: July 24, 2007
      Bugs: #184071
        ID: 200707-08

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Synopsis
========

A vulnerability has been discovered in NVClock, allowing for the
execution of arbitrary code.

Background
==========

NVClock is an utility for changing NVidia graphic chipsets internal
frequency.

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

    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  media-video/nvclock      < 0.7-r2                       >= 0.7-r2

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

Tavis Ormandy of the Gentoo Linux Security Team discovered that NVClock
makes usage of an insecure temporary file in the /tmp directory.

Impact
======

A local attacker could create a specially crafted temporary file in
/tmp to execute arbitrary code with the privileges of the user running
NVCLock.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All NVClock users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
 ">=media-video/nvclock-0.7-r2"

References
==========

  [ 1 ] CVE-2007-3531
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3531

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

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

  http://security.gentoo.org/glsa/glsa-200707-08.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 2007 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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