From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Jul 08 2004 - 02:49:49 CDT

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TITLE:
Comersus Shopping Cart Cross-Site Scripting and Price Manipulation

SECUNIA ADVISORY ID:
SA12026

VERIFY ADVISORY:
http://secunia.com/advisories/12026/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting, Manipulation of data

WHERE:
From remote

SOFTWARE:
Comersus Shopping Cart 5.x
http://secunia.com/product/3664/
Comersus Shopping Cart 4.x
http://secunia.com/product/1801/

DESCRIPTION:
Thomas Ryan has reported some vulnerabilities in Comersus Shopping
Cart, which can be exploited by malicious people to conduct
cross-site scripting attacks or manipulate orders.

1) Input passed to certain parameters in the following scripts isn't
properly sanitised before being returned to users.

* "store/comersus_customerAuthenticateForm.asp"
* "backofficeLite/comersus_backoffice_message.asp"
* "store/comersus_supportError.asp"
* "store/comersus_message.asp"

This can be exploited to execute arbitrary HTML and script code in a
user's browser session in context of a vulnerable site by tricking
the user into visiting a malicious website or follow a specially
crafted link.

2) Orders are reportedly submitted insecurely via a GET request to
the "store/comersus_gatewayPayPal.asp" script. This can be exploited
by malicious users to manipulate input in various parameters
including pricing.

The vulnerabilities have been reported in version 5.09. Other
versions may also be affected.

SOLUTION:
Update to version 5.098.
http://www.comersus.com/

PROVIDED AND/OR DISCOVERED BY:
Thomas Ryan, Provide Security.

ORIGINAL ADVISORY:
http://www.providesecurity.com/research/advisories/07062004-01.asp
http://www.providesecurity.com/research/advisories/07062004-02.asp

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