full-disclosure - Re: Orange Spain disclosing user phone number

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Message-ID: <4C7BA88F.9010203@betaversion.net>
Date: Mon, 30 Aug 2010 14:48:15 +0200
From: Collin Mulliner <collin@...aversion.net>
To: full-disclosure@...ts.grok.org.uk
Subject: Re: Orange Spain disclosing user phone number

mmmh I have done this stuff quite some time ago. See:
http://www.mulliner.org/security/httpheaderprivacy.php

I even made a site where you can check your operator (by visiting it
from your phone): http://www.mulliner.org/pc.cgi

xufi . wrote:
> Hi,
> Doing an assessment on mobile GWs I found that Orange Spain is adding
> the user MSISDN in any HTTP request sent in it´s network. That means
> that is really simple to get the user phone number from a Orange Spain
> user. On one hand, I saw that Orange Spain uses the header
> x-up-calling-line-id to add a user temporary ID that changes every 24h
> but I also found that in any HTTP request they will add the user phone
> number in the header X-Network-info. In particular the HTTP header
> looks like as follow:
> 
> X-Network-info: CSD,34xxxxxxxxx,unsecured
> 
> where xxxxxxxxx is the user MSISDN
> 
> I notified Orange Spain more than a month ago regarding the
> misconfiguration and its effects on their own customers but
> unfortunately they just ignored it.
> 
> If you are a user of Orange Spain have in mind that every web site you
> access with your mobile phone will get your phone number.
> 
> I posted more details in
> http://certificateerror.blogspot.com/2010/08/orange-spain-disclosing-user-phone.html
> 
> @xuf_
> 
> _______________________________________________
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-- 
Collin R. Mulliner <collin@...aversion.net>
info/pgp: finger collin@...aversion.net
If you have to run heating in winter, you don't own enough computers.

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/