From: Raphael Marichez (falcogentoo.org)
Date: Tue Jul 24 2007 - 17:48:12 CDT

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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
securitygentoo.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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