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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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