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Vulnerability Note VU#237257

Mozilla privilege escalation using addSelectionListener

Overview

A privilege escalation vulnerability exists in the Mozilla addSelectionListener method. This may allow a remote attacker to execute arbitrary code.

I. Description

addSelectionListener

Web content can add a SelectionListener to the Selection object by using addSelectionListener method of the nsISelectionPrivate interface. This listener would be called when the user performs a "find" or "select all" command.

The problem

The notifications are created in a privileged context, which can be leveraged to execute arbitrary code. Mozilla Firefox and SeaMonkey are reported to be vulnerable.

II. Impact

By convincing a user to view a specially crafted HTML document (e.g., a web page, an HTML email message, or an HTML email attachment), an attacker may be able to execute arbitrary code with the privileges of the user.

III. Solution

Apply an update

Refer to Mozilla Foundation Security Advisory 2006-43 for fixed versions of Mozilla products.

Disable JavaScript

This vulnerability can be mitigated by disabling JavaScript.

Systems Affected

VendorStatusDate Updated
Mozilla, Inc.Vulnerable2-Jun-2006

References


http://www.mozilla.org/security/announce/2006/mfsa2006-43.html
https://bugzilla.mozilla.org/show_bug.cgi?id=336830
http://www.xulplanet.com/references/xpcomref/ifaces/nsISelectionPrivate.html
http://secunia.com/advisories/21188/
http://www.securityfocus.com/bid/18228

Credit

Thanks to the Mozilla Foundation Security Advisory for reporting this vulnerability, who in turn credit moz_bug_r_a4.

This document was written by Will Dormann.

Other Information

Date Public06/01/2006
Date First Published06/02/2006 10:50:29 AM
Date Last Updated02/09/2007
CERT Advisory 
CVE NameCVE-2006-2777
US-CERT Technical Alerts 
Metric18.36
Document Revision17

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