Gentoo: Mozilla Suite, Mozilla Firefox Remote compromise
Posted by Benjamin D. Thomas   
Gentoo Several vulnerabilities in the Mozilla Suite and Firefox allow an attacker to conduct cross-site scripting attacks or to execute arbitrary code.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200505-11
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                            http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: Normal
     Title: Mozilla Suite, Mozilla Firefox: Remote compromise
      Date: May 15, 2005
      Bugs: #91859, #92393, #92394
        ID: 200505-11

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

Several vulnerabilities in the Mozilla Suite and Firefox allow an
attacker to conduct cross-site scripting attacks or to execute
arbitrary code.

Background
==========

The Mozilla Suite is a popular all-in-one web browser that includes a
mail and news reader. Mozilla Firefox is the next-generation browser
from the Mozilla project.

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

    -------------------------------------------------------------------
     Package                         /  Vulnerable  /       Unaffected
    -------------------------------------------------------------------
  1  www-client/mozilla-firefox           < 1.0.4             >= 1.0.4
  2  www-client/mozilla-firefox-bin       < 1.0.4             >= 1.0.4
  3  www-client/mozilla                   < 1.7.8             >= 1.7.8
  4  www-client/mozilla-bin               < 1.7.8             >= 1.7.8
    -------------------------------------------------------------------
     4 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

The Mozilla Suite and Firefox do not properly protect "IFRAME"
JavaScript URLs from being executed in context of another URL in the
history list (CAN-2005-1476). The Mozilla Suite and Firefox also fail
to verify the "IconURL" parameter of the "InstallTrigger.install()"
function (CAN-2005-1477). Michael Krax and Georgi Guninski discovered
that it is possible to bypass JavaScript-injection security checks by
wrapping the javascript: URL within the view-source: or jar:
pseudo-protocols (MFSA2005-43).

Impact
======

A malicious remote attacker could use the "IFRAME" issue to execute
arbitrary JavaScript code within the context of another website,
allowing to steal cookies or other sensitive data. By supplying a
javascript: URL as the "IconURL" parameter of the
"InstallTrigger.Install()" function, a remote attacker could also
execute arbitrary JavaScript code. Combining both vulnerabilities with
a website which is allowed to install software or wrapping javascript:
URLs within the view-source: or jar: pseudo-protocols could possibly
lead to the execution of arbitrary code with user privileges.

Workaround
==========

Affected systems can be protected by disabling JavaScript. However, we
encourage Mozilla Suite or Mozilla Firefox users to upgrade to the
latest available version.

Resolution
==========

All Mozilla Firefox users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/mozilla-firefox-1.0.4"

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

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/mozilla-firefox-bin-1.0.4"

All Mozilla Suite users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/mozilla-1.7.8"

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

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-client/mozilla-bin-1.7.8"

References
==========

  [ 1 ] CAN-2005-1476
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1476
  [ 2 ] CAN-2005-1477
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1477
  [ 3 ] Mozilla Foundation Security Advisory 2005-43
        http://www.mozilla.org/security/announce/mfsa2005-43.html

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

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

  http://security.gentoo.org/glsa/glsa-200505-11.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