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Vulnerability Note VU#714496

Mozilla products allow execution of arbitrary JavaScript

Overview

Multiple Mozilla products allow running JavaScript to be recompiled while executing. This vulnerability may allow a remote attacker to execute arbitrary JavaScript bytecode.

I. Description

According to Mozilla Foundation Security Advisory 2006-67:

    ...it was possible to modify a Script object while it was executing, potentially leading to the execution of arbitrary JavaScript bytecode.

This vulnerability requires JavaScript to be enabled. JavaScript is enabled by default in the Firefox web browser, but not in the Mozilla Thunderbird email client.

Note that this issue affects Mozilla Firefox, Thunderbird, and SeaMonkey. For more information refer to Mozilla Foundation Security Advisory 2006-67.

II. Impact

A remote, unauthenticated attacker may be able to execute arbitrary JavaScript bytecode.

III. Solution

Apply an update

According to the Mozilla Foundation Security Update 2006-67, this vulnerability is addressed in Firefox 1.5.0.8, Thunderbird 1.5.0.8, and SeaMonkey 1.0.6.

Disable JavaScript

For instructions on how to disable JavaScript in Firefox, please refer to the Firefox section of the Securing Your Web Browser document.

Systems Affected

VendorStatusDate Updated
MozillaVulnerable8-Nov-2006

References


https://bugzilla.mozilla.org/show_bug.cgi?id=355655
http://www.mozilla.org/security/announce/2006/mfsa2006-67.html
http://secunia.com/advisories/22929/
http://secunia.com/advisories/22980/
http://secunia.com/advisories/23013/
http://secunia.com/advisories/22763/
http://secunia.com/advisories/23009/
http://secunia.com/advisories/22815/
http://secunia.com/advisories/22727/

Credit

This vulnerability was reported in Mozilla Foundation Security Advisory 2006-67. Mozilla credits shutdown for providing information concerning this issue.

This document was written by Chris Taschner.

Other Information

Date Public11/08/2006
Date First Published11/08/2006 01:31:29 PM
Date Last Updated12/21/2006
CERT Advisory 
CVE NameCVE-2006-5463
US-CERT Technical Alerts 
Metric14.04
Document Revision24

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