I don't think it's necessary to say "do the right things with cookies" in
the Security BCP. The Browser Apps BCP has a much deeper discussion of how
different browser-based architectures work with cookies so that seems like
a better place to actually have a real discussion about it.

Also +1 to what Daniel said about not continuing to add little things. Plus
I think it's too late anyway, publication has already been requested for
the Security BCP.

Aaron

On Sun, Nov 5, 2023 at 11:14 AM Daniel Fett <fett=
40danielfett...@dmarc.ietf.org> wrote:

> I agree with Aaron!
>
> Also we should be very careful about any additions to the Security BCP at
> this point. It is very easy to re-start the "one more thing" loop we've
> been stuck in for the last years. There may be more useful things to say,
> but we should put them on the list for a future second version of the BCP.
>
> -Daniel
> Am 05.11.23 um 20:03 schrieb Aaron Parecki:
>
> I don't think the Security BCP should incorporate cookie best practices
> directly in the document. If anything, it sounds like possibly a candidate
> for inclusion in the Browser Apps BCP.
>
> There are already some mentions of these cookie properties mentioned in
> the Browser Apps BCP, though only in reference to specific architectures,
> not as a general best practice. For example:
>
>
> https://www.ietf.org/archive/id/draft-ietf-oauth-browser-based-apps-15.html#pattern-bff-cookie-security
>
> Aaron
>
> On Sun, Nov 5, 2023 at 10:48 AM Dick Hardt <dick.ha...@gmail.com> wrote:
>
>> Hey
>>
>> I was reviewing security on some sites I managed and checked to see if
>> the recommendations were in the BCP.
>>
>> I don't see anything around cookies such as httpOnly, sameSite, secure.
>>
>> I saw some HTTP security header suggestions buried in 4.16
>> (X-Frame-Options, CSP), but not for Strict-Transport-Security,
>> Permissions-Policy, or X-Content-Type-Options, and the CSP guidance is
>> rather vague.
>>
>> I understand these are general web security best practices, and perhaps I
>> missed it, but I think it would be useful to call out that best security
>> practices around cookies and headers should also be followed in Section 2,
>> and either have the best practices included, or direct the reader where to
>> find them.
>>
>> /Dick
>>
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>>
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