[Bitcoin-development] Fwd: Live mtgox.com trade matching bug.

Doug Huff dhuff at jrbobdobbs.org
Tue Jun 28 02:48:17 UTC 2011

Begin forwarded message:

> From: Doug Huff <mith at jrbobdobbs.org>
> Date: June 27, 2011 9:46:13 PM CDT
> To: full-disclosure at lists.grok.org.uk, "Mt.Gox" <info at mtgox.com>
> Cc: Bitcoin Dev Development <bitcoin-development at lists.sourceforge.net>
> Subject: Live mtgox.com trade matching bug.
> Step 1: Have USD available for spending on mtgox.com.
> Step 2: Put in a buy order large enough to drain your account. Low enough under the current trading price that it will not execute immediately.
> Step 3: Withdraw all USD funds.
> Step 4: Wait for market to fall enough to meet your order.
> Step 5: ...(self explanatory)...
> There's a bit of luck in being able to take advantage, obviously.
> I would suggest you take the site down asap until this is corrected or publicly show how this order will never execute:
> ==========
> Welcome <username removed> 0.00000000 ฿TC 424.44901
> Buying  138468.901  0.01  Active  1384.69  06/26 15:27  cancel
> ==========
> I cannot guarantee this order will execute but from everything I've observed about the new trade matching code I have no reason to believe it will not.
> At the very least this could be used to influence market conditions if it is only a display bug.
> -- 
> Douglas Huff

Doug Huff

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