As the time was running out, I did not make any comment but I actually
had two comments on this topic.

1) I agree with Vittorio that pushing people away from OAuth is a
slippery slope. Having said that, I have no good solution either. At
least, I feel that ROPC is not the right solution anyways.

2) ROPC is a good flow for migrating a password storing app to OAuth
as depicted in https://youtu.be/zuVuhl_Axbs . So, completely denying
it is a touch too much. It should very narrowly constrain its
applicability.

Cheers,

Nat

On Wed, Jul 24, 2019 at 11:33 AM Vittorio Bertocci
<vittorio.bertocci=40auth0....@dmarc.ietf.org> wrote:
>
> During Daniel's security BCP presentation yesterday, I commented that 
> although I support deprecating ROPG, I also believe we should acknowledge 
> scenarios where U/P use is unavoidable and give clear actionable guidance to 
> developers.
> Daniel observed that not every scenario is prone to be addressed via OAuth2, 
> and invited me to suggest some language to add to 
> https://tools.ietf.org/html/draft-ietf-oauth-security-topics-13#section-3.4 
> clarifying that.
> Here's the proposed language:
>
>> Please note: there are scenarios, such as legacy script languages, apps 
>> using connections strings and similar, where the direct use of username and 
>> password is required to maintain backward compatibility. Addressing those 
>> scenarios is outside of the scope of the OAuth2 authorization framework.
>
>
> As a side note: I worry a bit that giving explicit license to people to 
> ignore OAuth2 for that particular scenario might provide a bit of slippery 
> slope/broken window effect where developers won't use standard solutions in 
> other scenarios as well. At the same time, if we don;t want to tackle that 
> particular class of scenarios, I think it's fair of us to be explicit about 
> it.
> _______________________________________________
> OAuth mailing list
> OAuth@ietf.org
> https://www.ietf.org/mailman/listinfo/oauth



-- 
Nat Sakimura (=nat)
Chairman, OpenID Foundation
http://nat.sakimura.org/
@_nat_en

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