Re: [rtcweb] Alexey Melnikov's Discuss on draft-ietf-rtcweb-security-arch-18: (with DISCUSS)

Adam Roach <adam@nostrum.com> Wed, 06 March 2019 19:37 UTC

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To: Alexey Melnikov <aamelnikov@fastmail.fm>, The IESG <iesg@ietf.org>
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From: Adam Roach <adam@nostrum.com>
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Subject: Re: [rtcweb] Alexey Melnikov's Discuss on draft-ietf-rtcweb-security-arch-18: (with DISCUSS)
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On 3/5/19 3:52 AM, Alexey Melnikov wrote:
> My apologies for filing a procedural DISCUSS on this, but I am looking at:
>
> 7.5.  Determining the IdP URI
>
>     3.  The path, starting with "/.well-known/idp-proxy/" and appended
>         with the IdP protocol.  Note that the separator characters '/'
>         (%2F) and '\' (%5C) MUST NOT be permitted in the protocol field,
>         lest an attacker be able to direct requests outside of the
>         controlled "/.well-known/" prefix.  Query and fragment values MAY
>         be used by including '?' or '#' characters.
>
> "idp-proxy" is not registered in the IANA's
> <https://www.iana.org/assignments/well-known-uris/well-known-uris.xhtml>
> registry and this document doesn't register it either. If I missed where this
> is registered, please point me to the right document. If I haven't, please
> register it in this document.
>

Good catch! Thanks.

/a