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Gentoo Linux Security Advisory                           GLSA 200605-06
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  Severity: Normal
     Title: Mozilla Firefox: Potential remote code execution
      Date: May 06, 2006
      Bugs: #131138
        ID: 200605-06

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Synopsis
========

The Mozilla Firefox 1.5 line is vulnerable to a buffer overflow in the
JavaScript extension which may in theory lead to remote execution of
arbitrary code.

Background
==========

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

Affected packages
=================

    -------------------------------------------------------------------
     Package                         /  Vulnerable  /       Unaffected
    -------------------------------------------------------------------
  1  www-client/mozilla-firefox          < 1.5.0.3          >= 1.5.0.3
                                                                 < 1.5
  2  www-client/mozilla-firefox-bin      < 1.5.0.3          >= 1.5.0.3
                                                                 < 1.5
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

Martijn Wargers and Nick Mott discovered a vulnerability when rendering
malformed JavaScript content. The Mozilla Firefox 1.0 line is not
affected.

Impact
======

If JavaScript is enabled, by tricking a user into visiting a malicious
web page which would send a specially crafted HTML script that contains
references to deleted objects with the "designMode" property enabled,
an attacker can crash the web browser and in theory manage to execute
arbitrary code with the rights of the user running the browser.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Mozilla Firefox 1.5 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=www-client/mozilla-firefox-1.5.0.3"

All Mozilla Firefox 1.5 binary users should upgrade to the latest
version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=www-client/mozilla-firefox-bin-1.5.0.3"

References
==========

  [ 1 ] CVE-2006-1993
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1993

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

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

  http://security.gentoo.org/glsa/glsa-200605-06.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 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/2.0



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