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oasis-open / cti-python-stix2

OASIS TC Open Repository: Python APIs for STIX 2
https://stix2.readthedocs.io/
BSD 3-Clause "New" or "Revised" License
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Query with filter stopped working in STIX2 ver 3.0.0 #563

Open MLainer1 opened 1 year ago

MLainer1 commented 1 year ago

Hi, I have a code that used to work before I upgraded to STIX2 3.0.0 library version:

        tc_source = TAXIICollectionSource(collection_data)
        attack_pattern_obj = tc_source.query(query=[
            Filter("external_references.external_id", "=", my_attack_id),
            Filter("type", "=", "attack-pattern")
        ])

The filtering by external_references.external_id does not seem to work anymore, as I get as response all of the objects that have type==attack pattern, and not just the one that have external_references.external_id==my_attack_id . Before the upgrade, I only got one object that meets my query.

For example: Using my_attack_id=T1111 with the query above results in response with all of the attack_pattern objects in the system.

Thanks

chisholm commented 1 year ago

I am unable to reproduce this. I tried (using a different external_id for which I new an object existed on my server):

collection = Collection(
    "http://localhost:5000/trustgroup1/collections/91a7b528-80eb-42ed-a74d-c6fbd5a26116/",
    user="(user)",
    password="(password)"
)

tc_source = TAXIICollectionSource(collection, allow_custom=True)

filters = [
    Filter("external_references.external_id", "=", "B0005"),
    Filter("type", "=", "attack-pattern")
]

objs = tc_source.query(filters)

print(objs)

And got as output:

[taxii2client.v21] [WARNING ] [2022-12-06 19:00:00,604] TAXII Server Response with different amount of objects! Setting limit=100
[AttackPattern(type='attack-pattern', spec_version='2.1', id='attack-pattern--64ec233c-8762-4e4a-af40-475ebd3aa127', created_by_ref='identity--b73c59c1-8560-449a-b8d0-c2ce0533c5bf', created='2020-08-21T20:49:59.530265Z', modified='2022-09-08T18:26:13.302403Z', name='Emulator Evasion', description='Behaviors that obstruct analysis in an emulator.', kill_chain_phases=[KillChainPhase(kill_chain_name='mitre-mbc', phase_name='anti-behavioral-analysis')], revoked=False, external_references=[ExternalReference(source_name='mitre-mbc', url='https://github.com/MBCProject/mbc-markdown/blob/v2.3/anti-behavioral-analysis/emulator-evasion.md', external_id='B0005')], object_marking_refs=['marking-definition--093b6375-cd45-4aa3-8f91-6a03ddd7a3d3'], x_mitre_is_subtechnique=False)]