[gentoo-announce] [ GLSA 200503-31 ] Mozilla Firefox: Multiple vulnerabilities

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200503-31
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Mozilla Firefox: Multiple vulnerabilities
      Date: March 25, 2005
      Bugs: #86148
        ID: 200503-31

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Synopsis
========

Mozilla Firefox 1.0.2 fixes new security vulnerabilities, including the
remote execution of arbitrary code through malicious GIF images or
sidebars.

Background
==========

Mozilla Firefox is the popular next-generation browser from the Mozilla
project.

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

    -------------------------------------------------------------------
     Package                         /  Vulnerable  /       Unaffected
    -------------------------------------------------------------------
  1  www-client/mozilla-firefox           < 1.0.2             >= 1.0.2
  2  www-client/mozilla-firefox-bin       < 1.0.2             >= 1.0.2
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

The following vulnerabilities were found and fixed in Mozilla Firefox:

* Mark Dowd from ISS X-Force reported an exploitable heap overrun in
  the GIF processing of obsolete Netscape extension 2 (CAN-2005-0399)

* Kohei Yoshino discovered that a page bookmarked as a sidebar could
  bypass privileges control (CAN-2005-0402)

* Michael Krax reported a new way to bypass XUL security restrictions
  through drag-and-drop of items like scrollbars (CAN-2005-0401)

Impact
======

* The GIF heap overflow could be triggered by a malicious GIF image
  that would end up executing arbitrary code with the rights of the
  user running Firefox

* By tricking the user into bookmarking a malicious page as a
  Sidebar, a remote attacker could potentially execute arbitrary code
  with the rights of the user running the browser

* By setting up a malicious website and convincing users to obey very
  specific drag-and-drop instructions, attackers may leverage
  drag-and-drop features to bypass XUL security restrictions, which
  could be used as a stepping stone to exploit other vulnerabilities

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Mozilla Firefox users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/mozilla-firefox-1.0.2"

All Mozilla Firefox binary users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=www-client/mozilla-firefox-bin-1.0.2"

References
==========

  [ 1 ] CAN-2005-0399
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0399
  [ 2 ] CAN-2005-0401
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0401
  [ 3 ] CAN-2005-0402
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0402
  [ 4 ] Mozilla Security Advisories
        http://www.mozilla.org/projects/security/known-vulnerabilities.html

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

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

  http://security.gentoo.org/glsa/glsa-200503-31.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 2005 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/2.0

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