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fix(crowdstrike): map severity and the MTTD anchor in search_detections (v1.2.4)

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Two silent defects in the search_detections OCSF mapper.

Severity was a four-branch ternary that resolved to nothing, so every
ingested alert kept the alert rule's default severity instead of Falcon's
— a Low arrived as Medium and a Critical arrived as Medium too. It is now
a plain path to severity_name, whose words the ingestion engine reads
natively. (The ternary form is also repaired upstream, but a plain path is
simpler to read and to correct.)

No entry fed the OCSF `time` field, which is the only field the engine
reads to stamp detected_at. Incidents were anchored at ingestion instead
of at detection, so MTTD measured the collection delay as zero — over a
day on a slow poll. finding_info.created_time carries the same instant but
is read by nothing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Guillaume BOURGEOIS
2026-09-01 22:06:45 +02:00
parent e8b2166d30
commit 21b957be72
2 changed files with 13 additions and 3 deletions
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integrations/crowdstrike/manifest.yaml
+2 -2
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@@ -1,8 +1,8 @@
id: crowdstrike
name: CrowdStrike Falcon
version: 1.2.3
version: 1.2.4
description: "CrowdStrike Falcon (OAuth2 API) — full IR coverage: device/IOC/process enrichment, detections & cases, host groups, Real Time Response, ML/IOA exclusions, quarantine, Spotlight/CVE, ODS scans, CSPM, users, IOA rules, CNAPP, and Fusion workflows."
changelog: "1.2.3 — Documentation wording cleanup. 1.2.2 — Corrected the search_detections OCSF mapper against the Falcon Raptor alert schema: domain is device.hostinfo.domain, dropped non-existent fields, added scenario/alleged_filetype/cid. 1.2.1 — Marked search_detections as an ingestion source (ingest hints: results_path=resources, dedup_key=composite_id) so the alert-rule editor pre-fills it. 1.2.0 — Added a pre-built OCSF mapper for search_detections (Falcon unified alerts → OCSF: device, finding, MITRE, actor/parent process, file and IOC). 1.1.1 — Added test_connection for the instance Test button. 1.1.0 — Expanded to 81 commands (host groups, cases, RTR files/scripts/responders, ML/IOA exclusions, quarantine, Spotlight host-by-vuln/CVE, ODS scans, CSPM, users, IOA rules, CNAPP, identity/mobile detection resolve, and workflows). 1.0.0 — Initial release: device/detection enrichment, Spotlight, IOC management, contain/lift, and core RTR."
changelog: "1.2.4 — Fixed two silent defects in the search_detections OCSF mapper: severity was a ternary that resolved to nothing, so every alert kept the alert rule's default severity instead of Falcon's — it is now a plain path to severity_name, whose words the engine reads natively; and no entry fed the OCSF `time` field, so detected_at was never stamped and MTTD measured the collection delay as zero. 1.2.3 — Documentation wording cleanup. 1.2.2 — Corrected the search_detections OCSF mapper against the Falcon Raptor alert schema: domain is device.hostinfo.domain, dropped non-existent fields, added scenario/alleged_filetype/cid. 1.2.1 — Marked search_detections as an ingestion source (ingest hints: results_path=resources, dedup_key=composite_id) so the alert-rule editor pre-fills it. 1.2.0 — Added a pre-built OCSF mapper for search_detections (Falcon unified alerts → OCSF: device, finding, MITRE, actor/parent process, file and IOC). 1.1.1 — Added test_connection for the instance Test button. 1.1.0 — Expanded to 81 commands (host groups, cases, RTR files/scripts/responders, ML/IOA exclusions, quarantine, Spotlight host-by-vuln/CVE, ODS scans, CSPM, users, IOA rules, CNAPP, identity/mobile detection resolve, and workflows). 1.0.0 — Initial release: device/detection enrichment, Spotlight, IOC management, contain/lift, and core RTR."
category: endpoint
# Per-instance configuration. Scripts obtain an OAuth2 bearer token from