[secdir] Secdir review of draft-ietf-oauth-saml2-bearer-21

[Vincent Roca <[e-mail]>]

Hello,

I have reviewed this document as part of the security directorate's
ongoing effort to review all IETF documents being processed by the
IESG.  These comments were written primarily for the benefit of the
security area directors. Document editors and WG chairs should treat
these comments just like any other last call comments.

IMHO, the document is almost ready. I just have minor comments:

SAML and OAUTH are already covered by extensive, detailed security and privacy 
considerations sections.

I agree with the authors there is no need to duplicate text in the present document.
However I have two comments:

1- it is mentioned that replay attack protection is not mandatory, but there is no
justification. On the opposite, protection against replay attacks is mentioned at
several places in [OASIS.saml-sec-consider-2.0-os] (e.g., 6.1.2, 6.4.5, 6.5.2, 6.5.6,
7.1.1.4). I don’t know to what extent the situation differs, but I’m curious to know
why it is so.

2- [OASIS.saml-sec-consider-2.0-os] reference does not include any URL. It’s probably
worth to add it.
	http://docs.oasis-open.org/security/saml/v2.0/saml-sec-consider-2.0-os.pdf


Cheers,

  Vincent