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Gentoo Linux Security Advisory                        GLSA 200411-12:01
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: zgv: Multiple buffer overflows
      Date: November 07, 2004
      Bugs: #69150
        ID: 200411-12:01

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Synopsis
========

zgv contains multiple buffer overflows that can potentially lead to the
execution of arbitrary code.

Background
==========

zgv is a console image viewer based on svgalib.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  media-gfx/zgv        < 5.8                                 >= 5.8

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

Multiple arithmetic overflows have been detected in the image
processing code of zgv.

Impact
======

An attacker could entice a user to open a specially-crafted image file,
potentially resulting in execution of arbitrary code with the rights of
the user running zgv.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All zgv users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-gfx/zgv-5.8"

References
==========

  [ 1 ] BugTraq Advisory
        http://www.securityfocus.com/archive/1/379472

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

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

  http://security.gentoo.org/glsa/glsa-200411-12.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 2004 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/1.0