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Microsoft Internet Explorer 7 may allow address bar spoofing

Vulnerability Note VU#347188

Original Release Date: 2006-10-26 | Last Revised: 2006-10-26

Overview

Internet Explorer 7 may allow address bar spoofing in pop-up windows. This could let an attacker spoof the address of a web site.

Description

Internet Explorer 7 includes a new feature called "Address bar protection." This makes sure that every window, including pop-ups, will present an address bar to the user. By using a specially crafted URI, an attacker can spoof this address bar in a pop-up window.

Impact

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

Solution

We are currently unaware of a practical solution to this problem.

Disable Active scripting

Disabling Active scripting in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this vulnerability. Instructions for disabling Active scripting in the Internet Zone can be found in the "Securing Your Web Browser" document.

Verify web site certificates

Before providing sensitive information to a web site, verify the site's certificate as specified in US-CERT Cyber Security Tip ST05-010.

Vendor Information

347188
 
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Microsoft Corporation Affected

Updated:  October 26, 2006

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please disable Active scripting, as specified in the "Securing Your Web Browser" document.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


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References

Acknowledgements

This vulnerability was publicly disclosed by Secunia.

This document was written by Will Dormann.

Other Information

CVE IDs: None
Severity Metric: 2.84
Date Public: 2006-10-25
Date First Published: 2006-10-26
Date Last Updated: 2006-10-26 17:55 UTC
Document Revision: 7

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