[ SOURCE: http://www.secureroot.com/security/advisories/9713662053.html ] ============================================================================ Delphis Consulting Plc ============================================================================ Security Team Advisories [22/09/2000] securityteam@delphisplc.com [http://www.delphisplc.com/thinking/whitepapers/] ============================================================================ Adv : DST2K0036 Title : Price modification possible in CyberOffice Shopping Cart Author : DCIST (securityteam@delphisplc.com) O/S : Microsoft Windows NT 4 Server (SP5) Product : CyberOffice Shopping Cart v2 Date : 22/09/2000 I. Description II. Delphis Solution III. Vendor Comments IV. Disclaimer ============================================================================ I. Description ============================================================================ Vendor URL: http://www.smartwin.com.au/smartwin.htm Delphis Consulting Internet Security Team (DCIST) discovered the following vulnerability in CyberOffice Shopping Cart v2 under Windows NT. Severity: high - Price modification possible It is possible to modify the unit price of items as it is submitted as a hidden field as part of the order form. By saving a copy of the order form down locally and modify the value it is possible to submit a order form with a zero or even negative price value. example: The vendor solutions relies on referrers and is easily bypassed. II. Delphis Solution ============================================================================ Vendor Status: Informed Currently Delphis recommend the following: o Make transactions non-realtime (i.e. Manual authorisation) III. Vendor Comments ============================================================================ SmartWin is aware of the problem and has provided solution since about 6 months ago. Under Global / System Settings of the Shop Manager, you can set Authorized URL(s) to specify the Web sites (folders) where the shopping pages reside. This effectively stops the problem you reported in this article. Typically, merchants will switch on the option for real-time services. IV. Disclaimer ============================================================================ THE INFORMATION CONTAINED IN THIS ADVISORY IS BELIEVED TO BE ACCURATE AT THE TIME OF PRINTING, BUT NO REPRESENTATION OR WARRANTY IS GIVEN, EXPRESS OR IMPLIED, AS TO ITS ACCURACY OR COMPLETENESS. NEITHER THE AUTHOR NOR THE PUBLISHER ACCEPTS ANY LIABILITY WHATSOEVER FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL LOSS OR DAMAGE ARISING IN ANY WAY FROM ANY USE OF, OR RELIANCE PLACED ON, THIS INFORMATION FOR ANY PURPOSE. ============================================================================