Vulnerability Note VU#651928

Mozilla may allow violation of cross-domain scripting policies via dragging

Overview

A vulnerability affecting Mozilla web browsers may allow violation of cross-domain scripting policies and possibly execute code originating from a remote source.

I. Description

Mozilla web browsers allow the dragging of links and objects from one window to another. Should the object copied be javascript, then it may execute in the context of a script originating from a local source rather than a remote location. According to Mozilla's bug report:

"The user could be convinced to drag obscurred links in the context of a game or even a fake scrollbar. If the user could be convinced to drag two links in sequence into a separate window (not frame) the attacker would be able to run arbitrary programs."

II. Impact

This vulnerability could be used to exploit cross-domain scripting policies and possibly execute code originating from a remote source.

III. Solution

This vulnerability is resolved in Firefox Preview Release, Mozilla 1.7.3, and Thunderbird 0.8.

Systems Affected

Vendor	Status	Date Updated
Mozilla	Not Vulnerable	17-Sep-2004

References

http://secunia.com/advisories/12526/
http://bugzilla.mozilla.org/show_bug.cgi?id=250862
http://www.mozilla.org/projects/security/known-vulnerabilities.html
http://www.securitytracker.com/alerts/2004/Sep/1011317.html
http://www.securitytracker.com/alerts/2004/Sep/1011318.html

Credit

Thanks to Jesse Ruderman for reporting this vulnerability.

This document was written by Jason A Rafail.

Other Information

Date Public	09/14/2004
Date First Published	09/17/2004 02:02:40 PM
Date Last Updated	09/17/2004
CERT Advisory
CVE Name
US-CERT Technical Alerts
Metric	25.31
Document Revision	9

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