Re: [cti-stix] Clarity needed on deprecation of releationships on some key SCO objects when no STIX Pattern capability exists

[Bret Jordan <bret.jordan@broadcom.com>]

Jason,

Would you be able to write up what changes are needed to patterning to address this? Also, if you can point out the sections that have bad examples, we can get them fixed.Â

Bret

On Mon, Dec 16, 2019 at 6:38 AM Jason Keirstead <Jason.Keirstead@ca.ibm.com> wrote:

On some SCO objects relationships such as resolves_to_refs have been deprecated in favour of the new SCO relationship mechanism. However, we have not yet codified how one is to traverse these relationships inside a STIX pattern.

As a result - there is now no way to match in a pattern against an SCO object that is tying an IP address and a domain name or an IP and an ASN.

We have this use case actually in use today - and are unsure how to bring this forward to 2.1. Is the producer supposed to use the deprecated form in order to communicate this use case? Since using the new form, is not going to work with patterning?

2.1 CSD 02 illustrates this problem because resolves_to_refs is marked as deprecated, yet it is used in two different examples. Using deprecated properties in examples is very odd.

I think that either guidelines need to be added as to how to handle this use case that exists in 2.1, or resolves_to_refs and belongs_to_refs should not be marked as deprecated.
-
Jason Keirstead
Chief Architect - IBM Security Threat Management
www.ibm.com/security

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Thanks,

Bret

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