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UNIRAS Brief - 725/06 - Gentoo Linux Security Advisory: GLSA 200611-03 - NVIDIA binary graphics driver: Privilege escalation vulnerability



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______________________________________________________________________________

 UNIRAS (UK Government CERT) Briefing - 725/06 dated 08.11.06 time 14:15
 UNIRAS is part of NISCC (the UK National Infrastructure Security
 Co-ordination Centre)
______________________________________________________________________________

 UNIRAS material is available from the NISCC website at www.niscc.gov.uk
______________________________________________________________________________

Title
=====

Gentoo Linux Security Advisory: GLSA 200611-03 - NVIDIA binary graphics 
driver: Privilege escalation vulnerability 

Detail
======

Rapid7 reported a boundary error in the NVIDIA binary graphics driver
that leads to a buffer overflow in the accelerated rendering
functionality.


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Gentoo Linux Security Advisory                           GLSA 200611-03
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                                            http://security.gentoo.org/
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  Severity: High
     Title: NVIDIA binary graphics driver: Privilege escalation
            vulnerability
      Date: November 07, 2006
      Bugs: #151635
        ID: 200611-03

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Synopsis
========

The NVIDIA binary graphics driver is vulnerable to a local privilege
escalation through an X session.

Background
==========

The NVIDIA binary graphics driver from NVIDIA Corporation provides the
kernel module and the GL modules for graphic acceleration on the NVIDIA
based graphic cards.

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

    -------------------------------------------------------------------
     Package                     /  Vulnerable  /           Unaffected
    -------------------------------------------------------------------
  1  x11-drivers/nvidia-drivers     < 1.0.8776             >= 1.0.8776
                                                            < 1.0-8762

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

Rapid7 reported a boundary error in the NVIDIA binary graphics driver
that leads to a buffer overflow in the accelerated rendering
functionality.

Impact
======

An X client could trigger the buffer overflow with a maliciously
crafted series of glyphs. A remote attacker could also entice a user to
open a specially crafted web page, document or X client that will
trigger the buffer overflow. This could result in the execution of
arbitrary code with root privileges or at least in the crash of the X
server.

Workaround
==========

Disable the accelerated rendering functionality in the Device section
of xorg.conf :
    Option      "RenderAccel" "false"

Resolution
==========

NVIDIA binary graphics driver users should upgrade to the latest
version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=x11-drivers/nvidia-drivers-1.0.8776"

References
==========

  [ 1 ] CVE-2006-5379
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5379

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

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

  http://security.gentoo.org/glsa/glsa-200611-03.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@xxxxxxxxxx or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 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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______________________________________________________________________________

UNIRAS wishes to acknowledge the contributions of Gentoo for the
information contained in this briefing.
______________________________________________________________________________

This notice contains information released by the original author.
Some of the information may have changed since it was released. If the
vulnerability affects you, it may be prudent to retrieve the advisory
from the site of the original source to ensure that you receive the most
current information concerning that problem.

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The views and opinions of authors expressed within this notice shall not
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______________________________________________________________________________

<End of UNIRAS Briefing>

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