W3C home > Mailing lists > Public > public-web-security@w3.org > June 2011

Re: CSP and web analytics

From: John Wilander <john.wilander@owasp.org>
Date: Wed, 8 Jun 2011 20:21:39 +0200
Message-ID: <BANLkTime5NeTitQxX=cO=F6D_kyMw1k6kQ@mail.gmail.com>
To: Adam Barth <w3c@adambarth.com>
Cc: public-web-security@w3.org
I agree web analytics are easier to cspify (pronounced 'cisspify' :) than
3rd party ads but I think they're first in line to obstruct CSP adoption. A
lot of organizations who I'd like to see implement CSP in the first round
don't have 3rd party ads, such as banks and insurance companies. Also, web
apps as opposed to web *sites* are less likely to have 3rd party code-based
content.

Eduardo, thanks for the info on Google Analytics. I figured that was the
case and as far as I can see ga.js doesn't generate any inline code blocks
but we'd have to check it with CSP to be sure. Any idea why the GA guides
don't show or even suggest the file solution? Seems unlikely the majority of
developers will fix this on their own, rather just follow the guide. Maybe
we can suggest the Google Analytics team to change it?

I will set up a meeting with some Omniture guys to discuss the issue with
them. Will get back on that one.

   /John

2011/6/8 Adam Barth <w3c@adambarth.com>

> Yeah, one of the challenges for CSP is that it imposes constraints on
> how you integrate with third-parties.  Web analytics is probably one
> of the easier examples of this issue.  Advertising is probably more
> challenging.  My sense is that CSP succeeding on this dimension is
> going to take a while.  Enough developers need to be interested in
> using the feature that providers of these third-party services have an
> incentive to play nicely with CSP.
>
> Adam
>
>
> On Wed, Jun 8, 2011 at 4:19 AM, John Wilander <john.wilander@owasp.org>
> wrote:
> > Hi PubWebSec!
> >
> > To get ready for Content Security Policy in production organizations have
> to
> > get JavaScript guidelines in place stating no inline JavaScript, only
> > JavaScript in files. That's fine for in-house developers but I'm starting
> to
> > get worried about web analytics tools such as Omniture SiteCatalyst and
> > Google Analytics. These are very popular out there and the decision to
> use
> > them are typically made by managers closer to money than the security
> > department typically is.
> >
> > I've been using both SiteCatalyst and Analytics before, both using inline
> > JavaScript. Looking at their online documentation and tutorials I only
> see
> > inline solutions.
> >
> > Example from SiteCatalyst tutorial
> > (https://developer.omniture.com/en_US/get-started/sitecatalyst-tagging):
> > [bla, bla] return to the Page Code tab and copy all of the code in the
> tab.
> > In the HTML files, locate the comment that says Begin Paste the
> SiteCatalyst
> > JavaScript Page code here and then paste the Page Code below the comment.
> >
> > Example from Analytics tutorial
> > (
> http://www.google.com/support/googleanalytics/bin/answer.py?answer=174090
> ):
> > In the Profile Settings page, click the "Check Status" link. You'll see
> > something similar to the code snippet below. (...) Once you find the code
> > snippet, copy and paste it into your web page, just before the closing
> > </head> tag.
> >
> > All of this will be a show stopper for CSP. I think we have to start
> working
> > with the web analytics vendors to 1) find working file-only solutions,
> and
> > 2) write good tutorials on how to get file-only web analytics working..
> We
> > might be successful since developers in general consider this "paste the
> > JavaScript into your page" practice quite ugly.
> >
> > Thoughts?
> >
> >    Regards, John
> >
> > --
> > John Wilander, https://twitter.com/johnwilander
> > Chapter co-leader OWASP Sweden, http://owaspsweden.blogspot.com
> > Conf Comm, http://www.owasp.org/index.php/Global_Conferences_Committee
> > My music http://www.johnwilander.com
> >
> >
>



-- 
John Wilander, https://twitter.com/johnwilander
Chapter co-leader OWASP Sweden, http://owaspsweden.blogspot.com
Conf Comm, http://www.owasp.org/index.php/Global_Conferences_Committee<http://owaspsweden.blogspot.com>
Received on Wednesday, 8 June 2011 18:22:08 UTC

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