Secunia Research: Mozilla Products Dialog Origin Spoofing Vulnerability

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                   Secunia Research 21/06/2005

      - Mozilla Products Dialog Origin Spoofing Vulnerability -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
About Secunia........................................................7
Verification.........................................................8

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1) Affected Software

Mozilla 1.7.8
FireFox 1.04
Camino 0.8.4

Prior versions may also be affected.

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2) Severity

Rating: Less critical
Impact: Spoofing
Where:  From remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in Mozilla, Firefox, 
and Camino, which can be exploited by malicious web sites to spoof
dialog boxes.

The problem is that JavaScript dialog boxes do not display or include
their origin, which allows a new window to open e.g. a prompt dialog
box, which appears to be from a trusted site.

Successful exploitation normally requires that a user is tricked into
opening a link from a malicious web site to a trusted web site.

Secunia has constructed a test, which can be used to check if your
browser is affected by this issue:
http://secunia.com/multiple_browsers_dialog_origin_vulnerability_test/

The vulnerability has been confirmed in Mozilla 1.7.8, FireFox 1.04,
and Camino 0.8.4. Prior versions may also be affected.

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4) Solution

Do not browse untrusted web sites while browsing trusted sites.

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5) Time Table

24/05/2005 - Vulnerability discovered and reported to vendor.
21/06/2005 - Public disclosure.

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6) Credits

Discovered by Jakob Balle, Secunia Research.

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7) About Secunia

Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia web site:

http://secunia.com/

Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/

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8) Verification

Please verify this advisory by visiting the Secunia web site:
http://secunia.com/secunia_research/2005-11/advisory/

Complete list of vulnerability reports released by Secunia Research:
http://secunia.com/secunia_research/

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