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.

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.

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Impact

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

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Solution

Upgrade

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

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Vendor Information

349217

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Updated: October 19, 2007

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

See <http://www.mozilla.org/security/announce/2007/mfsa2007-33.html&gt; for more details.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23349217 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

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

Acknowledgements

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

CVE IDs:	CVE-2007-5334
Severity Metric:	3.23 Date Public: