[BUG][MISP] KeyError: 'external_id'

[mwatermolen]

Description

On MISP sync from the CIRCL EU Feed we receive KeyError: 'external_id'

Environment

1. OS (where OpenCTI server runs): Ubuntu 20.04
2. OpenCTI version: 5.2.0
3. OpenCTI client: N/A
4. Other environment details: Running on RKE kubernetes

Reproducible Steps

Steps to create the smallest reproducible scenario:

1. Ingest MISP feed
2. You would need the data causing this though - contact me and I can see if I can get access to the misp feed

Expected Output

Sync w/o errors

Actual Output

INFO:pika.channel:Closing channel (0): 'Normal shutdown' on <Channel number=1 OPEN conn=<SelectConnection OPEN transport=<pika.adapters.utils.io_services_utils._AsyncPlaintextTransport object at 0x7f35b06f0640> params=<ConnectionParameters host=opencti-5-1646404219-rabbitmq port=5672 virtual_host=/ ssl=False>>>
INFO:pika.channel:Received <Channel.CloseOk> on <Channel number=1 CLOSING conn=<SelectConnection OPEN transport=<pika.adapters.utils.io_services_utils._AsyncPlaintextTransport object at 0x7f35b06f0640> params=<ConnectionParameters host=opencti-5-1646404219-rabbitmq port=5672 virtual_host=/ ssl=False>>>
INFO:root:Processing event 5a9d518e-d610-4209-b609-08550acd0835
Traceback (most recent call last):
  File "/opt/opencti-connector-misp/misp.py", line 1697, in <module>
    mispConnector.run()
  File "/opt/opencti-connector-misp/misp.py", line 296, in run
    event_timestamp = self.process_events(work_id, events)
  File "/opt/opencti-connector-misp/misp.py", line 420, in process_events
    event_elements = self.prepare_elements(
  File "/opt/opencti-connector-misp/misp.py", line 1326, in prepare_elements
    "x_mitre_id": galaxy_entity["meta"]["external_id"][
KeyError: 'external_id'

Additional information

N/A

Screenshots (optional)

[nor3th]

Fixed