Re: BT/Cellnet Genie vulnerability

[james () CLOUD9 CO UK (James Fidell)]

I wrote:

> The webmail service from BT Cellnet's Genie site appears have a vulnerability
> which allows any user to read messages irrespective of their intended
> recipient.  Once logged in, other messages can be retrieved by merely
> changing the message-id in the URL for your own messages.

Engaging brain and writing this a little more clearly...

The Web server logs all SMS messages sent from the site to a mobile
phone.  The log is displayed once a Genie user has sean SMS message, which
requires authentication.  By selecting a message sent by themselves, it's
then possible to modify the URL used to retrieve your own message to read
other messages sent via the service.

James.

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