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Application: Wayport Public Access PC
Vendor: http://www.wayport.net
Bug: Authorisation Bypass
Risk: High
Date: 8 April 2008
Author: Pascal Cretain
e-mail: Pascal.Cretain at Gmail dot com
List: BugTraq (SecurityFocus)
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Product

Wayport's Public Access PC

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Bug

There is an Authentication Bypass weakness on Wayport's Public Access
PCs. To exploit the weakness, one needs to open an Internet Explorer
Window through the 'help' function that is available before the card
gets swiped and do the following:
Help –> Tools –> Manage Add-ons –> Disable Blocker Class
This add-on controls the entire charging element of the Solution.

An attacker who successfully exploits this misconfiguration could,
besides browsing the web for free, use a public access PC as a
launching pad.

Wayport know about it since the 14th of February. The following reply
was received by them on the 15th of February:

"Dear Pascal,

Thank you very much for your timely advisory and your high moral
values. We have verified your findings and made a fix that will get
deployed worldwide ASAP (within a week or so)."