W3C home > Mailing lists > Public > public-webappsec@w3.org > February 2016

Re: [UI Security] iframe URL indicator

From: Bil Corry <bil@corry.biz>
Date: Mon, 22 Feb 2016 14:11:23 +0100
Message-ID: <CACdphr7EW_5R4+07JqGgu7b6545jd9ZoS5ujET3JBBXw0OtA=g@mail.gmail.com>
To: Dan Kaminsky <dan@doxpara.com>
Cc: Brad Hill <hillbrad@gmail.com>, "public-webappsec@w3.org" <public-webappsec@w3.org>
Is it possible for the specification to simply state that the in-focus
iframe URL must be presented to the user and leave it up to the implementer
to determine how best to do it?

The specification solves the problem of visibility of the iframe, but as
written, doesn't solve the problem of identifying the origin, which is what
is required for secure iframe interactions where sensitive information is
being entered (e.g. credentials to the iframed site).

I agree that there are some challenges, such as user understanding or
swapping out the legitimate iframe for a phishing iframe upon a click
event, but hopefully we can understand those limitations with Dan's test

- Bil

On Mon, Feb 22, 2016 at 10:05 AM, Dan Kaminsky <dan@doxpara.com> wrote:

> Perhaps true, but there's wide classes of interactions that cannot be
> secured without address bar management. I'm hoping to have a usable test
> platform including this feature in the next 4-6 weeks.  Where I think
> everyone would agree is that this feature needs user data before approval
> in a way normal features might not.
> On Sunday, February 21, 2016, Brad Hill <hillbrad@gmail.com> wrote:
>> These kinds of decisions have proven in practice to be beyond the ability
>> of groups like ours to specify well.  Our intuituons about users'
>> understandings are not as good as data, may not be universal, or may need
>> different treatment on different devices and experiences.  With my editor
>> hat on, I'm inclined to leave this to each UA to experiment with and
>> determine what is best for their userbase.
>> -Brad
>> On Sat, Feb 13, 2016, 5:21 AM Bil Corry <bil@corry.biz> wrote:
>>> Hi,
>>> i was reviewing the UI Security draft [1] and wondered if there were
>>> plans to incorporate IronFrame's URL indicator for the iframe domain [2].
>>> That is to say, will a user be able to see the URL of the iframe that is in
>>> focus?
>>> Thanks,
>>> - Bil
>>> [1] http://w3c.github.io/webappsec-uisecurity/
>>> [2] Slide 72:
>>> http://dankaminsky.com/2015/08/09/defcon-23-lets-end-clickjacking/
Received on Monday, 22 February 2016 13:11:53 UTC

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