[ GLSA 200908-10 ] Dillo: User-assisted execution of arbitrary code

[Alex Legler <a3li () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200908-10
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Dillo: User-assisted execution of arbitrary code
      Date: August 18, 2009
      Bugs: #276432
        ID: 200908-10

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Synopsis
========

An integer overflow in the PNG handling of Dillo might result in the
remote execution of arbitrary code.

Background
==========

Dillo is a graphical web browser known for its speed and small
footprint.

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

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  www-client/dillo       < 2.1.1                           >= 2.1.1

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

Tilei Wang reported an integer overflow in the Png_datainfo_callback()
function, possibly leading to a heap-based buffer overflow.

Impact
======

A remote attacker could entice a user to open an HTML document
containing a specially crafted, large PNG image, possibly resulting in
the execution of arbitrary code with the privileges of the user running
the application.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Dillo users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =www-client/dillo-2.1.1

References
==========

  [ 1 ] CVE-2009-2294
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2294

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

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

  http://security.gentoo.org/glsa/glsa-200908-10.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 2009 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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