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Gentoo Linux Security Advisory                           GLSA 201309-04
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: Snack: User-assisted execution of arbitrary code
     Date: September 11, 2013
     Bugs: #446822
       ID: 201309-04

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Synopsis
========

A buffer overflow in Snack could result in execution of arbitrary code
or Denial of Service.

Background
==========

Snack is a sound toolkit for creating multi-platform audio applications
with scripting languages.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-tcltk/snack            < 2.2.10-r5              >= 2.2.10-r5

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

The GetWavHeader() function in jkSoundFile.c does not have boundary
checks when parsing format sub-chunks or unknown sub-chunks.

Impact
======

A remote attacker could entice a user to open a specially crafted WAV
file with an application using Snack, possibly resulting in execution
of arbitrary code or a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Snack users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-tcltk/snack-2.2.10-r5"

References
==========

[ 1 ] CVE-2012-6303
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6303

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

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

 http://security.gentoo.org/glsa/glsa-201309-04.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
https://bugs.gentoo.org.

License
=======

Copyright 2013 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