Vulnerability Note VU#349217

Mozilla XUL web applications may hide the titlebar

Overview

Mozilla's XUL contains a vulnerability that may allow a web application to cover an active window's titlebar.

I. Description

XUL is Mozilla's XML-based user interface language. XUL can be used to create Mozilla applications, extensions, and web applications.

From Mozilla Foundation Security Advisory 2007-33:

Mozilla developer Eli Friedman discovered that web pages written in the XUL markup language (rather than the usual HTML) can hide their window's titlebar. It may have been possible to abuse this ablity to create more convincing spoof and phishing pages.

II. Impact

An attacker may be able to create phishing or spoofed websites.

III. Solution

Upgrade

Mozilla has released Firefox 2.0.0.8 and SeaMonkey 1.1.5 to address this issue.

Systems Affected

Vendor	Status	Date Updated
Mozilla	Vulnerable	19-Oct-2007

References

https://bugzilla.mozilla.org/show_bug.cgi?id=391043
http://www.mozilla.org/security/announce/2007/mfsa2007-33.html
http://www.mozilla.org/projects/xul/

Credit

Thanks to Mozilla for information that was used in this report. Mozilla credits Eli Friedman for discovering this vulnerability.

This document was written by Ryan Giobbi.

Other Information

Date Public	10/19/2007
Date First Published	10/19/2007 02:32:19 PM
Date Last Updated	10/19/2007
CERT Advisory
CVE Name	CVE-2007-5334
US-CERT Technical Alerts
Metric	3.23
Document Revision	3

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Produced 2007 by US-CERT, a government organization
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