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Re: [Assurance] Monthly Assurance Call Focusing on Password Reset Topic: Wed. April 1, 2015 at noon ET, 0129048#


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  • From: Steven Carmody <>
  • To:
  • Subject: Re: [Assurance] Monthly Assurance Call Focusing on Password Reset Topic: Wed. April 1, 2015 at noon ET, 0129048#
  • Date: Wed, 08 Apr 2015 13:50:39 -0400

by any chance, is there a recording of this call available anywhere ?

a great topic -- several people here couldn't make it to the call, but are very interested.

On 3/26/15 8:35 AM, Emily Eisbruch wrote:

Greetings,

Please mark your calendar for the next Monthly Assurance Call,
Wed., April 1, 2015 at noon ET.

Connection Info:
+1-734-615-7474
+1-866-411-0013 (toll free US/Canada Only)
Access code: 0129048#

This call will feature a discussion on *Password Reset*, led by Eric
Goodman, Identity and Access Management Architect, University of
California Office of the President.

We will start with a short introduction laying out the issues, followed
by open discussion. During the discussion, we will consider questions
such as:

* What is your policy and what is working / not working about it ?
* Is it worth codifying password reset procedures?
* Any recommendations to modify the language in the IAP for InCommon
to consider?


For reference, below Eric's January 2015 summary of an email thread on
the password reset topic.

Thank you and we look forward to your participation on the call.
Emily


=====================
FOR REFERENCE:
EMAIL THREAD SUMMARIZED BY ERIC GOODMAN AS OF JAN. 2015

Hello and Happy New Year!

At the end of last year I started a thread on the InCommon Participants
mailing last year discussing account recovery/password reset and the
Bronze IAP. It was pointed out (offline) that the InCommon Assurance
mailing list is probably a more appropriate place for the discussion, so
I’m posting a follow-up summary of that thread here instead of on the
Participants list.

My original message was asking about section 4.2.4.3 of the
Bronze/Silver IAP. That section provides a list of approved password
change methods, followed by the statement “if none of these methods is
successful then the Subject must re-establish her or his identity with
the IdPO per Section 4.2.2 before the Credential may be renewed or
re-issued.” Because the section 4.2.2 applies only to Silver IAQ
accounts, there’s ambiguity about what is acceptable for recovery of a
Bronze IAQ account when the explicitly allowed mechanisms fail.

In that thread, I asked for examples of processes campuses actually use
to recovery Bronze IAQ accounts when the allowed methods in 4.2.4.3
fail, and specifically how campuses that have certified/self-asserted
compliance with Bronze determined/justified that such processes met the
IAP requirements in this section.

There was a good theoretical discussion of the requirements -- and I did
even get one response (off-list) with an actual Bronze process example
:). Reading between the lines of the theoretical discussion, I want to
make some concrete statements and see if they capture what people are
thinking and doing:

How people interpret the IAP requirements:

· For Silver: The list of allowed methods in 4.2.4.3 combined
with the identity proofing processes defined in 4.2.2 comprise a
complete list of allowed password change methods.

· For Bronze: The list of allowed methods in 4.2.4.3 provide an
incomplete list of allowed password change methods. Other methods would
be considered to be acceptable/compatible if they meet the general
Bronze IAP criteria outlined in section 3.1 that:

o “Assertions under this [Bronze] profile are likely to represent the
same Subject each time a Subject identifier is provided” and

o “it is expected that IdPOs use reasonable care when [re-]issuing
Credentials to confirm that a single individual applies for and receives
a given Credential and its Authentication Secret.”

How people apply this requirement (for recovery of Bronze accounts):

a) Users provide information that loosely (i.e., not Silver
verified) binds their account to known, valid identity data. E.g., A
user provides information that matches them to an employee or student
record as part of creating/updating their account profile.

b) Account operators presume that (unverified), completely
self-asserted information registered by a user in their profile
accurately describes the real world owner of the account.

If either are true, then we can use whatever mechanisms we see as
meeting the “reasonable care” guideline to verify a real life person’s
identity against the (a) referred to source system record or (b) the
(unverified) profile data registered on the account, to perform account
recovery operations.

Implications:

· Account operators presume that people provide accurate
information as part of their account profiles, even if there’s no
mechanism whatsoever to positively validate that presumption.

o E.g., if I registered an account using a fake name and other data, I
wouldn’t be able to recover that account (if 4.2.4.3 methods fail), but
some real person who happens to match the false information I provided
could potentially take possession of the account. In this case, we fail
the “it’s the same person each time” test, but arguably not in a way
that violates the “reasonable care” metric.

· For truly anonymous accounts (no name or other data that can
be verified against externally), there is no recourse; if the 4.2.4.3
methods fail the account is forever unrecoverable.

· It’s arguable that the additional processes (beyond 4.2.4.3)
account operators use for of recovery Bronze accounts should (must?) be
registered as Alternative Means with InCommon.

o This contradicts the interpretation (above) that section 4.2.4.3 is
an incomplete list of allowed methods for both Bronze.

o Alternative Methods processes are likely similar enough across
campuses that relatively few would need to be created to cover most use
cases .

Is this a reasonable summary of how people look at account recovery for
Bronze accounts?

Thanks for your time, especially if you’ve read this far!

--- Eric




Emily Eisbruch, Technology Transfer Analyst
Internet2

office: +1-734-352-4996 | mobile +1-734-730-5749





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