Re: [sacm] Draft updated charter for SACM

[Adam Montville <[e-mail]>]

Would any of the additions/questions be addressed if we adhered to Karen's
initial reminder that "we plan to call out specific drafts using the
milestone process and not include them in the base charter"?



On Tue, Sep 19, 2017 at 1:41 PM Waltermire, David A. (Fed) <
[e-mail]> wrote:

> Comments inline below.
>
> Thanks,
> Dave
>
> > -----Original Message-----
> > From: sacm [mailto:[e-mail]] On Behalf Of Nancy Cam-
> > Winget (ncamwing)
> > Sent: Tuesday, September 19, 2017 2:07 PM
> > To: Banghart, Stephen A. (Fed) <[e-mail]>;
> > [e-mail]
> > Subject: Re: [sacm] Draft updated charter for SACM
> >
> > Please see my comments below:
> >
> > On 9/18/17, 11:08 AM, "sacm on behalf of Banghart, Stephen A. (Fed)"
> > <[e-mail] on behalf of [e-mail]> wrote:
> >
> >     All,
> >
> >     After discussion with a few other SACM document authors this version
> of
> > the new charter proposal was put together. The changes throughout are
> > minimal; the primary change is several additions to the work items
> section
> > that covers other work currently being done in the WG.
> >
> >     Does anyone have any thoughts/comments/concerns on this proposed
> > draft update?
> >
> >     Thanks,
> >     Stephen Banghart
> >
> >
>  ------------------------------------------------------------------------------------------
> >
> >     SACM Charter Proposal
> >     2017-09-12
> >
> >     Securing information and the systems that store, process, and
> transmit
> > that information is a challenging task for organizations of all sizes,
> and many
> > security practitioners spend much of their time on manual processes.
> > Standardized protocols and models aiding collection and evaluation of
> > endpoint attributes enable automation, thus freeing practitioners to
> focus on
> > high priority tasks .
> >
> >     At its core, posture assessment  consists of five basic steps, which
> the
> > working group desires to fulfill  in an innovative, automated manner
> capable
> > of avoiding ad hoc or scheduled assessments:
> >
> >     1. Describe target endpoints
> >     2. Determine specific endpoint elements  to assess
> >     3. Collect and make available specified elements' actual values
> >     4. Compare actual element values to expected element values
> >     5. Make results available
> >
> >     This working group will focus on collection, evaluation, and
> orchestration
> > and communication, as described herein.
> >
> >     A. Collection. The WG will define a standardized way to provide two
> types
> > of imperative guidance to collectors over varying collection mechanisms:
> >
> >     1) Which target endpoints to collect from, and
> >     2) What to collect from these target endpoints.
> >
> >     When classified , a set of instructions (such as vulnerability
> description
> > data, YANG filter expressions, Windows Management Instrumentation
> > classes, etc.) can be brokered to the appropriate collectors using the
> control
> > plane functions  defined by "C. Orchestration and Communication" (below).
> > Detecting and classifying desired attributes beforehand may require
> > orchestrating functions that go beyond the set of capabilities a
> collector can
> > provide, and will inform the requirements and characteristics for "C.
> > Orchestration and Communication". The working group recognizes that
> > manual configuration of targets and corresponding collection profiles
> will not
> > scale and does not seem to be a viable option.
> >
> >     B. Evaluation. The working group will standardize a criteria language
> > enabling evaluation of actual endpoint posture information against
> desired
> > endpoint posture information to produce a standardized result. This
> > extensible language will support complex Boolean statements, comparison
> > operators, logical flow statements, and functions for string
> manipulation.
> > Additionally, the working group will seek to discover an approach that
> allows
> > data from any posture collection mechanism to be generically evaluated.
> >
> >     C. Orchestration and Communication. The working group will define a
> set
> > of control plane functions to enable the discovery and orchestration
> > between devices that can provide the requisite information  sought by
> > posture collectors, posture evaluators, data repositories, and other SACM
> > architectural components.
> >
> >     Due to the breadth of this work, the working group will address
> enterprise
> > use cases pertaining to the assessment of endpoint posture (using the
> > definitions of Endpoint and Posture from RFC 5209). The working group
> will,
> > whenever reasonable and possible, reuse existing work.
> > [NCW] I think we need to incorporate
> https://tools.ietf.org/html/draft-ietf-
> > sacm-terminology as we need to have a well understood set of definitions
> > beyond “endpoint” and “posture”
>
> [daw: When you suggest incorporating sacm-terminology, are you suggesting
> to add it as a work item? I am in favor of adding terminology as a work
> item, but I am concerned with referencing unstable terminology in the
> charter. We don't want the meaning of the charter to change over time.]
>
> >
> >     Specific work items will include the following:
> >
> >     -  The WG will define a way to provide two types of imperative
> guidance to
> > the correct SACM collectors: 1) Which target endpoints to collect from
> and 2)
> > what to collect from these target endpoints. When classified, a set of
> > instructions, such as vulnerability description data or YANG filter
> expressions,
> > can be brokered to the appropriate collectors. Detecting and classifying
> > beforehand might require orchestrating functions that go beyond the set
> of
> > capabilities a SACM collector can provide.
> >
> >     -  The WG will describe a criteria language capable of being
> evaluated
> > against endpoint posture information to produce a standardized result.
> The
> > language will support complex Boolean statements, comparison operators,
> > and functions for string manipulation; and will be extensible enough to
> be
> > applicable to the full range of collected posture attributes.
> Additionally, this
> > document will describe an approach that allows data from any posture
> > collection mechanism to be evaluated.
> >
> >     - The WG will define a control plane function to enable the
> discovery and
> > orchestration between devices that can provide the requisite information
> > sought by posture collectors, posture evaluators or both. As an example,
> a
> > document that describes an instance of such a control plane and transfer
> > protocol for data, is through the use of XMPP and extensions as needed to
> > demonstrate XMPP’s applicability to SACM.
> >
> >     - A method of expressing software metadata is needed that is
> suitable for
> > use by constrained devices. The WG will create a standards track document
> > that defines a CBOR-based format that represents software metadata to
> > include software identification, file hashes, and other descriptive
> > information. This format will be derived from the ISO/IEC 19770-2
> Software
> > Identification (SWID) tag standard.
> > [NCW]  I am not sure why this is called out explicitly as software
> metadata
> > could also be represented with the Yang model?  Perhaps the intent is to
> > show this as one example for how it can be expressed?  That is, there are
> > other representations that the IETF is looking at that could also be
> leveraged.
>
> [daw: This work item description is for the draft-ietf-sacm-coswid work,
> which is SWID tag based. Doing this work is not mutually exclusive with
> work on YANG-based software models. I personally believe both should be
> worked on. By including this work item, I wanted to make sure we identified
> an existing portion of adopted SACM work as something we plan to complete
> under this revised charter. This does not exclude working on YANG models in
> SACM or elsewhere that relate to software.]
>
> >
> >     - To support collection of posture information from traditional
> computing
> > devices (e.g., servers, laptops, etc.), the WG will create standards
> track
> > documents describing mechanisms for the collection and delivery of
> > information about installed software on an endpoint by extending IETF
> NEA.
> >
> >     - To provide for the integration of multiple standards to support
> posture
> > information collection, the WG will define best practices  for the
> collection of
> > posture information from endpoints and its delivery to a collector, from
> > which it can be distributed using the SACM messaging standards.
> > [NCW] This seems to
> >
> >     -The WG will define standards track documents describing extensions
> to
> > the Resource-Oriented Lightweight Information Exchange (ROLIE) that
> > provide IANA registrations and requirements to support the sharing of
> > software, configuration information, and other forms of imperative
> > guidance.
> > [NCW] Similar to my previous comment, about CBOR/SWID,  there can be
> > other means for providing information exchange.  For example, using Yang
> > model and leveraging NETCONFs work for the information exchange.
>
> [daw: This work item addresses
> draft-banghart-sacm-rolie-softwaredescriptor (which has been adopted) and
> draft-mandm-sacm-rolie-configuration-checklist. The ROLIE-based software
> descriptor model supports vendor-to-enterprise exchange of CBOR/XML SWID
> information (a type of imperative guidance), which can be used to provide
> golden measurements, to construct vulnerability detection data, and other
> security automation/assessment related use cases. Configuration setting
> checklists expressed in a machine readable form are another example of
> imperative guidance that can be exchanged over ROLIE with the definition of
> a proper extension. This imperative guidance can be used to drive
> collection and evaluation by defining what needs to be gathered and what
> the expected state must be according to policy. ROLIE exchanges are
> different than the exchanges supported by NETCONF and SWIMA, which are
> focused on endpoint-to-enterprise exchanges of current state. Both the
> vendor-to-enterprise and the endpoint-to-enterprise exchanges are needed in
> my view, since they support different aspects of the assessment workflow.]
>
> >
> >     Additionally, the working group will describe: 1) a SACM Architecture
> > including protocol requirements and their associated use cases as well
> as a
> > description of how SACM protocols fit together into a system, and 2) a
> SACM
> > Information Model.
> >
> >
> >     > -----Original Message-----
> >     > From: sacm [mailto:[e-mail]] On Behalf Of Karen
> >     > O'Donoghue
> >     > Sent: Tuesday, September 12, 2017 12:48 PM
> >     > To: [e-mail]
> >     > Subject: [sacm] Draft updated charter for SACM
> >     >
> >     > Folks,
> >     >
> >     > Below is a draft update to our charter based on discussion at the
> last IETF
> > and
> >     > some subsequent private discussions. Comments welcome. Please
> >     > remember that we plan to call out specific drafts using the
> milestone
> > process
> >     > and not include them in the base charter.
> >     >
> >     > Regards,
> >     > Karen
> >     >
> >     > ***************
> >     >
> >     > SACM Charter Proposal
> >     > 2017-09-12
> >     >
> >     > Securing information and the systems that store, process, and
> transmit
> > that
> >     > information is a challenging task for organizations of all sizes,
> and many
> >     > security practitioners spend much of their time on manual
> processes.
> >     > Standardized protocols and models aiding collection and evaluation
> of
> >     > endpoint attributes enable automation, thus freeing practitioners
> to
> > focus on
> >     > high priority tasks.
> >     >
> >     > At its core, posture assessment consists of five basic steps,
> which the
> >     > working group desires to fulfill in an innovative, automated manner
> > capable
> >     > of avoiding ad hoc or scheduled assessments:
> >     >
> >     > 1. Describe target endpoints
> >     > 2. Determine specific endpoint elements to assess 3. Collect and
> make
> >     > available specified elements' actual values 4. Compare actual
> element
> > values
> >     > to expected element values 5. Make results available
> >     >
> >     > This working group will focus on collection, evaluation, and
> orchestration
> > and
> >     > communication, as described herein.
> >     >
> >     > A. Collection. The WG will define a standardized way to provide two
> > types of
> >     > imperative guidance to collectors over varying collection
> mechanisms:
> >     >
> >     > 1) Which target endpoints to collect from, and
> >     > 2) What to collect from these target endpoints.
> >     >
> >     > When classified, a set of instructions (such as vulnerability
> description
> > data,
> >     > YANG filter expressions, Windows Management Instrumentation
> classes,
> >     > etc.) can be brokered to the appropriate collectors using the
> control
> > plane
> >     > functions defined by "C. Orchestration and Communication" (below).
> >     > Detecting and classifying desired attributes beforehand may require
> >     > orchestrating functions that go beyond the set of capabilities a
> collector
> > can
> >     > provide, and will inform the requirements and characteristics for
> "C.
> >     > Orchestration and Communication". The working group recognizes that
> >     > manual configuration of targets and corresponding collection
> profiles will
> > not
> >     > scale and does not seem to be a viable option.
> >     >
> >     > B. Evaluation. The working group will standardize a criteria
> language
> > enabling
> >     > evaluation of actual endpoint posture information against desired
> > endpoint
> >     > posture information to produce a standardized result. This
> extensible
> >     > language will support complex Boolean statements, comparison
> > operators,
> >     > logical flow statements, and functions for string manipulation.
> > Additionally,
> >     > the working group will seek to discover an approach that allows
> data from
> >     > any posture collection mechanism to be generically evaluated.
> >     >
> >     > C. Orchestration and Communication. The working group will define
> a set
> > of
> >     > control plane functions to enable the discovery and orchestration
> > between
> >     > devices that can provide the requisite information sought by
> posture
> >     > collectors, posture evaluators, data repositories, and other SACM
> >     > architectural components.
> >     >
> >     > Due to the breadth of this work, the working group will address
> > enterprise
> >     > use cases pertaining to the assessment of endpoint posture (using
> the
> >     > definitions of Endpoint and Posture from RFC 5209). The working
> group
> > will,
> >     > whenever reasonable and possible, reuse existing work.
> >     >
> >     > Specific work items will include the following:
> >     >
> >     > - Collection: The WG will define a way to provide two types of
> imperative
> >     > guidance to the correct SACM collectors: 1) Which target endpoints
> to
> > collect
> >     > from and 2) what to collect from these target endpoints. When
> classified,
> > a
> >     > set of instructions, such as vulnerability description data or
> YANG filter
> >     > expressions, can be brokered to the appropriate collectors.
> Detecting
> > and
> >     > classifying beforehand might require orchestrating functions that
> go
> > beyond
> >     > the set of capabilities a SACM collector can provide.
> >     >
> >     > - Evaluation: The working group will describe a criteria language
> capable
> > of
> >     > being evaluated against endpoint posture information to produce a
> >     > standardized result. The language will support complex Boolean
> > statements,
> >     > comparison operators, and functions for string manipulation; and
> will be
> >     > extensible enough to be applicable to the full range of collected
> posture
> >     > attributes. Additionally, this document will describe an approach
> that
> > allows
> >     > data from any posture collection mechanism to be evaluated.
> >     >
> >     > - Messaging: The WG will define a control plane function to enable
> the
> >     > discovery and orchestration between devices that can provide the
> > requisite
> >     > information sought by posture collectors, posture evaluators or
> both. As
> > an
> >     > example, a document that describes an instance of such a control
> plane
> > and
> >     > transfer protocol for data, is through the use of XMPP and
> extensions as
> >     > needed to demonstrate XMPP’s applicability to SACM.
> >     >
> >     > Additionally, the working group will describe: 1) a SACM
> Architecture
> >     > including protocol requirements and their associated use cases as
> well as
> > a
> >     > description of how SACM protocols fit together into a system, and
> 2) a
> > SACM
> >     > Information Model.
> >     >
> >     > _______________________________________________
> >     > sacm mailing list
> >     > [e-mail]
> >     > https://www.ietf.org/mailman/listinfo/sacm
> >     _______________________________________________
> >     sacm mailing list
> >     [e-mail]
> >     https://www.ietf.org/mailman/listinfo/sacm
> >
> >
> > _______________________________________________
> > sacm mailing list
> > [e-mail]
> > https://www.ietf.org/mailman/listinfo/sacm
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