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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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Gentoo Linux Security Advisory                           GLSA 200408-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Opera: Multiple new vulnerabilities
      Date: August 05, 2004
      Bugs: #59503
        ID: 200408-05

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Synopsis
========

Several new vulnerabilities were found and fixed in Opera, including
one allowing an attacker to read the local filesystem remotely.

Background
==========

Opera is a multi-platform web browser.

Affected packages
=================

    -------------------------------------------------------------------
     Package        /   Vulnerable   /                      Unaffected
    -------------------------------------------------------------------
  1  net-www/opera        <= 7.53                              >= 7.54

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

Multiple vulnerabilities have been found in the Opera web browser.
Opera fails to deny write access to the "location" browser object. An
attacker can overwrite methods in this object and gain script access to
any page that uses one of these methods. Furthermore, access to file://
URLs is possible even from pages loaded using other protocols. Finally,
spoofing a legitimate web page is still possible, despite the fixes
announced in GLSA 200407-15.

Impact
======

By enticing an user to visit specially crafted web pages, an attacker
can read files located on the victim's file system, read emails written
or received by M2, Opera's mail program, steal cookies, spoof URLs,
track user browsing history, etc.

Workaround
==========

There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version.

Resolution
==========

All Opera users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=net-www/opera-7.54"
    # emerge ">=net-www/opera-7.54"

References
==========

  [ 1 ] Opera Changelog
        http://www.opera.com/linux/changelogs/754/
  [ 2 ] Address bar spoofing issue disclosure

http://archives.neohapsis.com/archives/fulldisclosure/2004-07/1056.html
  [ 3 ] GreyMagic Security Advisory GM#008-OP
        http://www.greymagic.com/security/advisories/gm008-op/

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

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

    http://security.gentoo.org/glsa/glsa-200408-05.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

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Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

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