Vulnerability Note VU#207540

TomatoCart with PayPal Express Checkout design flaw vulnerability

Original Release date: 30 Oct 2012 | Last revised: 30 Oct 2012

Overview

TomatoCart 1.1.7 with PayPal Express Checkout, and possibly other versions, contains a design flaw that may allow an attacker to purchase items for free or less than advertised.

Description

It has been reported that TomatoCart 1.1.7 using the PayPal Express Checkout module in sandbox mode, and possibly other versions, suffers from a design flaw that may allow an attacker to purchase items for free or at a reduced price. An attacker may be able to manipulate the redirection URL from PayPal back to TomatoCart in a way that allows the attacker to purchase items for free or at a reduced price.

Impact

An attacker may be able to purchase items for free or at a reduced price.

Solution

We are currently unaware of a practical solution to this problem. Please consider the following workaround.

Disable PayPal Express

TomatoCart users should disable payments from the PayPal express checkout module until a patch is released.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
tomatoCartAffected15 Oct 201229 Oct 2012
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base 6.8 AV:N/AC:L/Au:S/C:N/I:C/A:N
Temporal 5.5 E:POC/RL:U/RC:UC
Environmental 5.5 CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to Giancarlo Pellegrino for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

  • CVE IDs: CVE-2012-4934
  • Date Public: 08 Oct 2012
  • Date First Published: 30 Oct 2012
  • Date Last Updated: 30 Oct 2012
  • Document Revision: 13

Feedback

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