From BugTraq:-

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Gentoo Linux Security Advisory GLSA 200407-15
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http://security.gentoo.org/
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Severity: Normal
Title: Opera: Multiple spoofing vulnerabilities
Date: July 20, 2004
Bugs: #56311, #56109
ID: 200407-15

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Synopsis
========

Opera contains three vulnerabilities, allowing an attacker to impersonate legitimate websites with URI obfuscation or to spoof websites with frame injection.

Background
==========

Opera is a multi-platform web browser.

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

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Package / Vulnerable / Unaffected
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1 net-www/opera <= 7.52 >= 7.53

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

Opera fails to remove illegal characters from an URI of a link and to check that the target frame of a link belongs to the same website as the link. Opera also updates the address bar before loading a page. Additionally, Opera contains a certificate verification problem.

Impact
======

These vulnerabilities could allow an attacker to impersonate legitimate websites to steal sensitive information from users. This could be done by obfuscating the real URI of a link or by injecting a malicious frame into an arbitrary frame of another browser window.

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-7.53"
# emerge ">=net-www/opera-7.53"

References
==========

[ 1 ] Bugtraq Announcement
http://www.securityfocus.com/bid/10517
[ 2 ] Secunia Advisory SA11978
http://secunia.com/advisories/11978/
[ 3 ] Secunia Advisory SA12028
http://secunia.com/advisories/12028/
[ 4 ] Opera Changelog
http://www.opera.com/linux/changelogs/753/

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

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

http://security.gentoo.org/glsa/glsa-200407-15.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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