Microsoft Internet Explorer 7 may allow address bar spoofing

2006-10-26T00:00:00
ID VU:347188
Type cert
Reporter Secunia
Modified 2006-10-26T00:00:00

Description

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.


Systems Affected

Vendor| Status| Date Notified| Date Updated
---|---|---|---
Microsoft Corporation| | -| 26 Oct 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics

Group | Score | Vector
---|---|---
Base | N/A | N/A
Temporal | N/A | N/A
Environmental | N/A | N/A

References

  • <http://www.us-cert.gov/reading_room/securing_browser/#Internet_Explorer>
  • <http://secunia.com/advisories/22542/>
  • <http://isc.sans.org/diary.php?storyid=1804>
  • <http://secunia.com/internet_explorer_7_popup_address_bar_spoofing_test/>
  • <http://www.microsoft.com/windows/ie/ie7/about/features/default.mspx>
  • <http://blogs.msdn.com/ie/archive/2005/11/21/495507.aspx>

Credit

This vulnerability was publicly disclosed by Secunia.

This document was written by Will Dormann.

Other Information

  • CVE IDs: Unknown
  • Date Public: 25 Oct 2006
  • Date First Published: 26 Oct 2006
  • Date Last Updated: 26 Oct 2006
  • Severity Metric: 2.83
  • Document Revision: 5