Vulnerability Note VU#988768

Microsoft Internet Explorer (IE) permits modification of URL displayed in address bar

Overview

A vulnerability exists in Microsoft Internet Explorer which could could enable an attacker to spoof trusted web sites.

I. Description

A vulnerability exists in Microsoft Internet Explorer. This vulnerability could enable a web page to display the URL
from a different web site in the IE address bar. This spoofing could occur within a valid SSL session with the impersonated site, meaning that a web site operator could make it appear that the content from his or her Web site actually originated from another site, even a trusted or secure Web site, when in fact, it did not.

More information on this problem is available from Microsoft at:

http://www.microsoft.com/technet/security/bulletin/MS01-027.asp

II. Impact

This vulnerability could be used to convince a user that the intruder's web site was actually a different one - a web site that the user
trusts and might provide sensitive information to.

III. Solution

Apply the patch described in http://www.microsoft.com/technet/security/bulletin/MS01-027.asp

Systems Affected

Vendor	Status	Date Updated
Microsoft	Vulnerable	5-Jun-2001

References

http://www.microsoft.com/technet/security/bulletin/MS01-027.asp
http://www.securityfocus.com/bid/2737

Credit

Our thanks to Microsoft for the information contained in their bulletin.

This document was written by Ian A. Finlay and is based on information obtained from a Microsoft Security Advisory.

Other Information

Date Public	05/17/2001
Date First Published	06/07/2001 03:10:38 PM
Date Last Updated	06/07/2001
CERT Advisory
CVE Name	CAN-2001-0339
Metric	0.00
Document Revision	22

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