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Re: Privacy Review Request for CSS Sizing Level 3

From: Christine Runnegar <runnegar@isoc.org>
Date: Mon, 2 Nov 2020 23:24:22 +0000
To: fantasai <fantasai.lists@inkedblade.net>
CC: "public-privacy@w3.org" <public-privacy@w3.org>, "www-style@w3.org" <www-style@w3.org>
Message-ID: <9C9145B6-36DA-4C59-9A62-CDC961F61DD4@isoc.org>
Thanks for sending in this request Fantasai. We will assign the review at our next PING meeting on 5 November 2020.

Christine

> On Oct 23, 2020, at 4:40 PM, fantasai <fantasai.lists@inkedblade.net> wrote:
> 
> [sorry for the resend; forgot to CC www-style]
> 
> The CSSWG requests formal review of the CSS Sizing Module Level 3:
>  https://www.w3.org/TR/css-sizing-3/

> 
> This CSS module defines the various sizing properties and concepts used throughout CSS. New features since CSS2 are summarized in
>  https://www.w3.org/TR/css-sizing-3/#changes-3

> 
> This specification is in the “almost CR” stage of development, so we expect it to transition, in more or less its current form, after completing horizontal review.
> 
> The Privacy and Security Considerations section is here:
>  https://www.w3.org/TR/css-sizing-3/#priv-sec

> 
> Please raise any issues in the csswg GitHub repo:
>   https://github.com/w3c/csswg-drafts/issues

> and let us know when you have completed your review.
> 
> 
> = Self-Review Questionnaire: Security and Privacy =
> 
> 2.1 What information might this feature expose to Web sites or other parties, and for what purposes is that exposure necessary?
> 
> In order to support automatic layout, CSS sizes boxes to fit their contents. In conjunction with various DOM and CSSOM APIs which can return the size of those boxes in JS, this can expose information about those contents. However, this information is more directly and easily available by inspecting the DOM for the contents, rather than indirecting through the parent's size. Containers that can't have their contents inspected (such as cross-origin iframes) also do not expose sizing information to the outer page, except insofar as replaced elements such as images expose their intrinsic size and/or aspect ratio.
> 
> 2.2 Is this specification exposing the minimum amount of information necessary to power the feature?
> 
> Yes
> 
> 2.3 How does this specification deal with personal information or personally-identifiable information or information derived thereof?
> 
> Not applicable
> 
> 2.4 How does this specification deal with sensitive information?
> 
> Not applicable
> 
> 2.5 Does this specification introduce new state for an origin that persists across browsing sessions?
> 
> No
> 
> 2.6 What information from the underlying platform, e.g. configuration data, is exposed by this specification to an origin?
> 
> None
> 
> 2.7 Does this specification allow an origin access to sensors on a user’s device
> 
> No
> 
> 2.8 What data does this specification expose to an origin? Please also document what data is identical to data exposed by other features, in the same or different contexts.
> 
> None
> 
> 2.9 Does this specification enable new script execution/loading mechanisms?
> 
> No
> 
> 2.10 Does this specification allow an origin to access other devices?
> 
> No
> 
> 2.11 Does this specification allow an origin some measure of control over a user agent’s native UI?
> 
> No
> 
> 2.12 What temporary identifiers might this this specification create or expose to the web?
> 
> None
> 
> 2.13 How does this specification distinguish between behavior in first-party and third-party contexts?
> 
> Not applicable
> 
> 2.14 How does this specification work in the context of a user agent’s Private Browsing or "incognito" mode?
> 
> No difference
> 
> 2.15 Does this specification have a "Security Considerations" and "Privacy Considerations" section?
> 
> Yes https://drafts.csswg.org/css-sizing-3/#priv-sec

> 
> 2.16 Does this specification allow downgrading default security characteristics?
> 
> No
> 
> 2.17 What should this questionnaire have asked?
> 
> Nothing springs to mind.
> 
> Thanks~
> ~fantasai
> 
> 

Received on Monday, 2 November 2020 23:24:38 UTC

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