[NT] IE Gopher View Cross Site Scripting

From: support@securiteam.com
Date: 06/17/02 

From: support@securiteam.com
To: list@securiteam.com
Date: Mon, 17 Jun 2002 22:01:56 +0200 (CEST)

The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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  IE Gopher View Cross Site Scripting
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SUMMARY

Internet Explorer 5 allows cross site scripting while its in gopher view.
This would allow an attacker to cause the execution of arbitrary
JavaScript and HTML.

DETAILS

Impact:
The usual cross site scripting attack consequences are subject here. Your
script must fit into a finite amount of character space or it will be
truncated thus making it fail.

Exploit:
In order to duplicate this attack you can use gn gohperd, and add the
following malicious ".cache" file:
Name=<script>alert('When can we see the source code bill?')</script>
Path=0/hrmm
Type=0
Host=10.0.1.234
Port=70

Next open the link <gopher://10.0.1.234/1> gopher://10.0.1.234/1, and an
alert box will appear.

ADDITIONAL INFORMATION

The information has been provided by <mailto:dotslash@snosoft.com> KF.

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