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Re: Req for feedback? Add attribute to elements to defeat clickjacking

From: David Lindsay <thornmaker@gmail.com>
Date: Tue, 7 Jun 2011 13:33:08 -0400
Message-ID: <BANLkTim7=r3GDGQOYMu=b-mbcKdhxmGBMQ@mail.gmail.com>
To: Michal Zalewski <lcamtuf@coredump.cx>
Cc: sird@rckc.at, public-web-security@w3.org
Also, there can be ui-redressing problems when everything on a page
gets overlaid *except* the click-target element.

On Tue, Jun 7, 2011 at 12:36, Michal Zalewski <lcamtuf@coredump.cx> wrote:
>> <style>
>> #buyButton:hover{
>>    visibility: forced;/* or something else, I don't know.. */
>> }
>> </style>
>> <button id="buyButton">Click here to purchase server for $500.00.</button>
>
> I see two potential problems here:
>
> 1) What do you do when you have two overlapping "always on top"
> elements? You can only render one.
>
> 2) What if the button is visible (and therefore interactive), but only
> for a very short period of time before a premeditated click (not
> enough to give the user a chance to respond)?
>
> In general, I had the impression that vendors were very unhappy about
> implementing any solutions to clickjacking that would involve
> determining the actual on-screen visibility of a rendered element,
> because that can be complicated in some settings (my proposal in 2008
> was shot down on these grounds).
>
> /mz
>
>
Received on Tuesday, 7 June 2011 17:33:44 UTC

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