kitos
8f98bdd273
- ruff.toml: select E/W/F/I/N rules, line-length=120, drop legacy ignores - Auto-fix: sort 82 import blocks (isort), remove 29 unused imports, strip 6 trailing-whitespace blank lines in docstrings - main.py: move setup_logging and settings imports to top (E402) - errors.py: noqa N818 on DDD exception names (96 call sites, safe) - intel_service.py: noqa N817 for universal ET alias - atomic/elastic/sigma import services: move _MAX_UNCOMPRESSED_SIZE and _MAX_ENTRIES to module level (N806) - compliance_import_service.py: move SAMPLE_CONTROLS / CIS_CONTROLS to module level; wrap long description strings (N806 + E501) - snapshot_service.py: move STATUS_ORDER dict to module level (N806) - sigma_import_service.py: remove dead dedup_key expression (F841) - threat_actor_import_service.py: remove dead stix_to_actor expression (F841) - data_source.py, seed_demo.py, campaign_scheduler_service.py, lolbas_import_service.py: wrap lines exceeding 120 chars (E501) - d3fend_import_service.py: per-file E501 ignore (data file with long strings) All 439 unit tests pass. ruff check app/ → All checks passed!
653 lines
22 KiB
Python
653 lines
22 KiB
Python
"""Compliance import service — imports NIST 800-53 to ATT&CK mappings.
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Downloads and parses the STIX bundle from the Center for Threat-Informed
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Defense's attack_to_nist_mapping repository to create ComplianceFramework,
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ComplianceControl, and ComplianceControlMapping records.
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"""
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import logging
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import re
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import requests
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from sqlalchemy.orm import Session
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from app.models.compliance import (
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ComplianceControl,
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ComplianceControlMapping,
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ComplianceFramework,
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)
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from app.models.technique import Technique
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logger = logging.getLogger(__name__)
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# ── Module-level control definitions (avoids N806 / uppercase-in-function) ────
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_NIST_SAMPLE_CONTROLS = [
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{
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"control_id": "AC-2",
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"title": "Account Management",
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"category": "Access Control",
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"techniques": ["T1078", "T1136", "T1098", "T1087", "T1069"],
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},
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{
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"control_id": "AC-3",
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"title": "Access Enforcement",
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"category": "Access Control",
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"techniques": ["T1078", "T1548", "T1134"],
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},
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{
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"control_id": "AC-4",
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"title": "Information Flow Enforcement",
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"category": "Access Control",
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"techniques": ["T1048", "T1041", "T1572"],
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},
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{
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"control_id": "AC-6",
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"title": "Least Privilege",
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"category": "Access Control",
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"techniques": ["T1078", "T1548", "T1134"],
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},
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{
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"control_id": "AU-2",
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"title": "Event Logging",
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"category": "Audit and Accountability",
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"techniques": ["T1562", "T1070"],
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},
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{
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"control_id": "AU-6",
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"title": "Audit Record Review",
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"category": "Audit and Accountability",
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"techniques": ["T1562", "T1070", "T1027"],
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},
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{
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"control_id": "CA-7",
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"title": "Continuous Monitoring",
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"category": "Assessment, Authorization, and Monitoring",
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"techniques": ["T1059", "T1053"],
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},
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{
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"control_id": "CM-2",
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"title": "Baseline Configuration",
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"category": "Configuration Management",
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"techniques": ["T1574", "T1546"],
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},
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{
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"control_id": "CM-6",
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"title": "Configuration Settings",
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"category": "Configuration Management",
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"techniques": ["T1574", "T1546", "T1112"],
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},
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{
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"control_id": "CM-7",
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"title": "Least Functionality",
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"category": "Configuration Management",
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"techniques": ["T1059", "T1218"],
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},
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{
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"control_id": "IA-2",
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"title": "Identification and Authentication",
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"category": "Identification and Authentication",
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"techniques": ["T1078", "T1110"],
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},
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{
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"control_id": "IA-5",
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"title": "Authenticator Management",
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"category": "Identification and Authentication",
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"techniques": ["T1078", "T1110", "T1003"],
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},
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{
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"control_id": "IR-4",
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"title": "Incident Handling",
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"category": "Incident Response",
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"techniques": ["T1059", "T1547"],
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},
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{
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"control_id": "RA-5",
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"title": "Vulnerability Monitoring and Scanning",
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"category": "Risk Assessment",
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"techniques": ["T1190", "T1203"],
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},
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{
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"control_id": "SC-7",
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"title": "Boundary Protection",
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"category": "System and Communications Protection",
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"techniques": ["T1048", "T1041", "T1071"],
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},
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{
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"control_id": "SC-28",
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"title": "Protection of Information at Rest",
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"category": "System and Communications Protection",
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"techniques": ["T1005", "T1114"],
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},
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{
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"control_id": "SI-3",
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"title": "Malicious Code Protection",
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"category": "System and Information Integrity",
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"techniques": ["T1059", "T1204", "T1566"],
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},
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{
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"control_id": "SI-4",
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"title": "System Monitoring",
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"category": "System and Information Integrity",
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"techniques": ["T1059", "T1053", "T1547"],
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},
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{
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"control_id": "SI-7",
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"title": "Software, Firmware, and Information Integrity",
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"category": "System and Information Integrity",
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"techniques": ["T1195", "T1553"],
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},
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{
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"control_id": "PM-16",
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"title": "Threat Awareness Program",
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"category": "Program Management",
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"techniques": ["T1566", "T1204"],
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},
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]
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_CIS_CONTROLS = [
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{
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"control_id": "CIS-1",
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"title": "Inventory and Control of Enterprise Assets",
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"category": "IG1 — Basic",
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"techniques": ["T1595", "T1590", "T1018", "T1082"],
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},
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{
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"control_id": "CIS-2",
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"title": "Inventory and Control of Software Assets",
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"category": "IG1 — Basic",
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"techniques": ["T1518", "T1072", "T1195"],
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},
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{
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"control_id": "CIS-3",
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"title": "Data Protection",
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"category": "IG1 — Basic",
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"techniques": ["T1005", "T1114", "T1560", "T1048", "T1041"],
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},
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{
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"control_id": "CIS-4",
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"title": "Secure Configuration of Enterprise Assets and Software",
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"category": "IG1 — Basic",
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"techniques": ["T1574", "T1546", "T1112", "T1543"],
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},
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{
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"control_id": "CIS-5",
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"title": "Account Management",
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"category": "IG1 — Basic",
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"techniques": ["T1078", "T1136", "T1098", "T1087"],
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},
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{
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"control_id": "CIS-6",
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"title": "Access Control Management",
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"category": "IG1 — Basic",
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"techniques": ["T1078", "T1548", "T1134", "T1021"],
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},
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{
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"control_id": "CIS-7",
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"title": "Continuous Vulnerability Management",
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"category": "IG2 — Foundational",
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"techniques": ["T1190", "T1203", "T1068", "T1210"],
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},
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{
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"control_id": "CIS-8",
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"title": "Audit Log Management",
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"category": "IG2 — Foundational",
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"techniques": ["T1562", "T1070", "T1059"],
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},
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{
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"control_id": "CIS-9",
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"title": "Email and Web Browser Protections",
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"category": "IG2 — Foundational",
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"techniques": ["T1566", "T1204", "T1189", "T1598"],
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},
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{
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"control_id": "CIS-10",
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"title": "Malware Defenses",
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"category": "IG2 — Foundational",
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"techniques": ["T1059", "T1204", "T1027", "T1140", "T1497"],
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},
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{
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"control_id": "CIS-11",
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"title": "Data Recovery",
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"category": "IG1 — Basic",
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"techniques": ["T1486", "T1490", "T1561"],
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},
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{
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"control_id": "CIS-12",
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"title": "Network Infrastructure Management",
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"category": "IG2 — Foundational",
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"techniques": ["T1557", "T1071", "T1572", "T1571"],
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},
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{
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"control_id": "CIS-13",
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"title": "Network Monitoring and Defense",
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"category": "IG2 — Foundational",
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"techniques": ["T1071", "T1048", "T1041", "T1105", "T1572"],
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},
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{
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"control_id": "CIS-14",
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"title": "Security Awareness and Skills Training",
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"category": "IG1 — Basic",
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"techniques": ["T1566", "T1204", "T1598"],
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},
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{
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"control_id": "CIS-15",
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"title": "Service Provider Management",
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"category": "IG2 — Foundational",
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"techniques": ["T1199", "T1195"],
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},
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{
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"control_id": "CIS-16",
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"title": "Application Software Security",
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"category": "IG2 — Foundational",
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"techniques": ["T1190", "T1059", "T1203"],
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},
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{
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"control_id": "CIS-17",
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"title": "Incident Response Management",
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"category": "IG2 — Foundational",
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"techniques": ["T1059", "T1547", "T1053"],
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},
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{
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"control_id": "CIS-18",
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"title": "Penetration Testing",
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"category": "IG3 — Organizational",
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"techniques": ["T1595", "T1046", "T1190", "T1059"],
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},
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]
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# URL for the NIST 800-53 Rev 5 to ATT&CK mapping
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# This is the JSON STIX bundle that contains the relationships
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NIST_MAPPING_URL = (
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"https://raw.githubusercontent.com/center-for-threat-informed-defense/"
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"attack_to_nist_mapping/main/data/attack-to-nist-rev5.json"
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)
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def import_nist_800_53_mappings(db: Session) -> dict:
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"""Import NIST 800-53 Rev 5 mappings from MITRE CTI repository.
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Steps:
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1. Create or get the NIST 800-53 Rev 5 framework
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2. Download the STIX bundle JSON
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3. Parse controls and relationship objects
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4. Create ComplianceControl records
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5. Create ComplianceControlMapping records
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Returns a summary dict with counts.
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"""
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# ── 1. Create or get framework ────────────────────────────────
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framework = (
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db.query(ComplianceFramework)
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.filter(ComplianceFramework.name == "NIST 800-53 Rev 5")
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.first()
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)
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if not framework:
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framework = ComplianceFramework(
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name="NIST 800-53 Rev 5",
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version="5",
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description=(
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"National Institute of Standards and Technology "
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"Special Publication 800-53 Revision 5 — "
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"Security and Privacy Controls for Information Systems and Organizations"
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),
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url="https://csrc.nist.gov/publications/detail/sp/800-53/rev-5/final",
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is_active=True,
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)
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db.add(framework)
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db.flush()
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logger.info("Created NIST 800-53 Rev 5 framework")
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else:
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logger.info("NIST 800-53 Rev 5 framework already exists")
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# ── 2. Download STIX bundle ───────────────────────────────────
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try:
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response = requests.get(NIST_MAPPING_URL, timeout=30)
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response.raise_for_status()
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stix_bundle = response.json()
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except requests.RequestException as e:
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logger.warning(f"Failed to download STIX bundle: {e}")
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# Fallback: create a sample set of well-known NIST controls
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return _import_sample_nist_mappings(db, framework)
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# ── 3. Parse STIX objects ─────────────────────────────────────
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objects = stix_bundle.get("objects", [])
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# Build lookup maps
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# STIX IDs -> control info
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control_map = {} # stix_id -> {control_id, title, category}
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technique_map = {} # stix_id -> mitre_technique_id
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relationships = [] # (source_ref, target_ref) for "mitigates" relationships
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for obj in objects:
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obj_type = obj.get("type", "")
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if obj_type == "course-of-action":
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# This is a NIST control
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name = obj.get("name", "")
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desc = obj.get("description", "")
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stix_id = obj.get("id", "")
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# Extract control ID from name (e.g., "AC-2 Account Management")
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match = re.match(r"^([A-Z]{2}-\d+(?:\.\d+)?)\s*(.*)", name)
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if match:
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control_id = match.group(1)
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title = match.group(2) or name
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else:
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control_id = name
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title = name
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# Extract category from control family
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category_match = re.match(r"^([A-Z]{2})", control_id)
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category = _get_nist_category(category_match.group(1)) if category_match else None
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control_map[stix_id] = {
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"control_id": control_id,
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"title": title,
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"description": desc[:500] if desc else None,
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"category": category,
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}
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elif obj_type == "attack-pattern":
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# This is an ATT&CK technique
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stix_id = obj.get("id", "")
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ext_refs = obj.get("external_references", [])
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for ref in ext_refs:
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if ref.get("source_name") == "mitre-attack":
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technique_map[stix_id] = ref.get("external_id", "")
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break
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elif obj_type == "relationship":
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rel_type = obj.get("relationship_type", "")
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if rel_type == "mitigates":
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source_ref = obj.get("source_ref", "")
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target_ref = obj.get("target_ref", "")
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relationships.append((source_ref, target_ref))
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# ── 4. Create controls ────────────────────────────────────────
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controls_created = 0
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controls_existing = 0
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control_db_map = {} # control_id -> ComplianceControl
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# Load existing controls for this framework
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existing_controls = {
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c.control_id: c
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for c in db.query(ComplianceControl)
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.filter(ComplianceControl.framework_id == framework.id)
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.all()
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}
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for stix_id, info in control_map.items():
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cid = info["control_id"]
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if cid in existing_controls:
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control_db_map[stix_id] = existing_controls[cid]
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controls_existing += 1
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else:
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ctrl = ComplianceControl(
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framework_id=framework.id,
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control_id=cid,
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title=info["title"],
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description=info["description"],
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category=info["category"],
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)
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db.add(ctrl)
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db.flush()
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control_db_map[stix_id] = ctrl
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controls_created += 1
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# ── 5. Create mappings ────────────────────────────────────────
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mappings_created = 0
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mappings_skipped = 0
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# Build technique DB lookup (mitre_id -> Technique)
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all_techniques = {t.mitre_id: t for t in db.query(Technique).all()}
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# Load existing mappings
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existing_mappings = set()
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for m in db.query(ComplianceControlMapping).all():
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existing_mappings.add((str(m.compliance_control_id), str(m.technique_id)))
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for source_ref, target_ref in relationships:
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control = control_db_map.get(source_ref)
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mitre_id = technique_map.get(target_ref)
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if not control or not mitre_id:
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mappings_skipped += 1
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continue
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technique = all_techniques.get(mitre_id)
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if not technique:
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mappings_skipped += 1
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continue
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key = (str(control.id), str(technique.id))
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if key in existing_mappings:
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mappings_skipped += 1
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continue
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mapping = ComplianceControlMapping(
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compliance_control_id=control.id,
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technique_id=technique.id,
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)
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db.add(mapping)
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existing_mappings.add(key)
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mappings_created += 1
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db.commit()
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summary = {
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"framework": framework.name,
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"controls_created": controls_created,
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"controls_existing": controls_existing,
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"mappings_created": mappings_created,
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"mappings_skipped": mappings_skipped,
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"total_controls": controls_created + controls_existing,
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"total_relationships_found": len(relationships),
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}
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logger.info(f"NIST 800-53 import complete: {summary}")
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return summary
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def _import_sample_nist_mappings(db: Session, framework: ComplianceFramework) -> dict:
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"""Import a curated sample of NIST 800-53 controls when the download fails.
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This ensures the feature works even without network access.
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"""
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# Build technique lookup
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all_techniques = {t.mitre_id: t for t in db.query(Technique).all()}
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existing_controls = {
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c.control_id: c
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for c in db.query(ComplianceControl)
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.filter(ComplianceControl.framework_id == framework.id)
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.all()
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}
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existing_mappings = set()
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for m in db.query(ComplianceControlMapping).all():
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existing_mappings.add((str(m.compliance_control_id), str(m.technique_id)))
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controls_created = 0
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mappings_created = 0
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for sample in _NIST_SAMPLE_CONTROLS:
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# Create or get control
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if sample["control_id"] in existing_controls:
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control = existing_controls[sample["control_id"]]
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else:
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control = ComplianceControl(
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framework_id=framework.id,
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control_id=sample["control_id"],
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title=sample["title"],
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category=sample["category"],
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)
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db.add(control)
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db.flush()
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existing_controls[sample["control_id"]] = control
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controls_created += 1
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# Create mappings
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for mitre_id in sample["techniques"]:
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technique = all_techniques.get(mitre_id)
|
|
if not technique:
|
|
# Try with subtechnique prefix
|
|
for key, tech in all_techniques.items():
|
|
if key.startswith(mitre_id):
|
|
technique = tech
|
|
break
|
|
if not technique:
|
|
continue
|
|
|
|
key = (str(control.id), str(technique.id))
|
|
if key in existing_mappings:
|
|
continue
|
|
|
|
mapping = ComplianceControlMapping(
|
|
compliance_control_id=control.id,
|
|
technique_id=technique.id,
|
|
)
|
|
db.add(mapping)
|
|
existing_mappings.add(key)
|
|
mappings_created += 1
|
|
|
|
db.commit()
|
|
|
|
return {
|
|
"framework": framework.name,
|
|
"controls_created": controls_created,
|
|
"controls_existing": len(existing_controls) - controls_created,
|
|
"mappings_created": mappings_created,
|
|
"mappings_skipped": 0,
|
|
"total_controls": len(existing_controls),
|
|
"source": "sample_data",
|
|
}
|
|
|
|
|
|
def import_cis_controls_v8_mappings(db: Session) -> dict:
|
|
"""Import CIS Controls v8 with ATT&CK technique mappings.
|
|
|
|
Uses a curated set of CIS Controls mapped to MITRE ATT&CK techniques
|
|
based on the CIS Controls Navigator and official documentation.
|
|
|
|
Returns a summary dict with counts.
|
|
"""
|
|
# ── 1. Create or get framework ────────────────────────────────
|
|
framework = (
|
|
db.query(ComplianceFramework)
|
|
.filter(ComplianceFramework.name == "CIS Controls v8")
|
|
.first()
|
|
)
|
|
|
|
if not framework:
|
|
framework = ComplianceFramework(
|
|
name="CIS Controls v8",
|
|
version="8",
|
|
description=(
|
|
"Center for Internet Security Critical Security Controls Version 8 — "
|
|
"a prioritized set of 18 security safeguards "
|
|
"organized by Implementation Groups (IG1, IG2, IG3)."
|
|
),
|
|
url="https://www.cisecurity.org/controls/v8",
|
|
is_active=True,
|
|
)
|
|
db.add(framework)
|
|
db.flush()
|
|
logger.info("Created CIS Controls v8 framework")
|
|
else:
|
|
logger.info("CIS Controls v8 framework already exists")
|
|
|
|
# ── 2. Control definitions with ATT&CK mappings ───────────────
|
|
# (defined at module level as _CIS_CONTROLS)
|
|
|
|
# Build technique lookup
|
|
all_techniques = {t.mitre_id: t for t in db.query(Technique).all()}
|
|
|
|
existing_controls = {
|
|
c.control_id: c
|
|
for c in db.query(ComplianceControl)
|
|
.filter(ComplianceControl.framework_id == framework.id)
|
|
.all()
|
|
}
|
|
|
|
existing_mappings = set()
|
|
for m in (
|
|
db.query(ComplianceControlMapping)
|
|
.join(ComplianceControl)
|
|
.filter(ComplianceControl.framework_id == framework.id)
|
|
.all()
|
|
):
|
|
existing_mappings.add((str(m.compliance_control_id), str(m.technique_id)))
|
|
|
|
controls_created = 0
|
|
mappings_created = 0
|
|
|
|
for item in _CIS_CONTROLS:
|
|
if item["control_id"] in existing_controls:
|
|
control = existing_controls[item["control_id"]]
|
|
else:
|
|
control = ComplianceControl(
|
|
framework_id=framework.id,
|
|
control_id=item["control_id"],
|
|
title=item["title"],
|
|
category=item["category"],
|
|
)
|
|
db.add(control)
|
|
db.flush()
|
|
existing_controls[item["control_id"]] = control
|
|
controls_created += 1
|
|
|
|
for mitre_id in item["techniques"]:
|
|
technique = all_techniques.get(mitre_id)
|
|
if not technique:
|
|
continue
|
|
key = (str(control.id), str(technique.id))
|
|
if key in existing_mappings:
|
|
continue
|
|
mapping = ComplianceControlMapping(
|
|
compliance_control_id=control.id,
|
|
technique_id=technique.id,
|
|
)
|
|
db.add(mapping)
|
|
existing_mappings.add(key)
|
|
mappings_created += 1
|
|
|
|
db.commit()
|
|
|
|
summary = {
|
|
"framework": framework.name,
|
|
"controls_created": controls_created,
|
|
"controls_existing": len(existing_controls) - controls_created,
|
|
"mappings_created": mappings_created,
|
|
"total_controls": len(existing_controls),
|
|
}
|
|
logger.info(f"CIS Controls v8 import complete: {summary}")
|
|
return summary
|
|
|
|
|
|
def _get_nist_category(family_code: str) -> str:
|
|
"""Map NIST 800-53 family code to category name."""
|
|
categories = {
|
|
"AC": "Access Control",
|
|
"AT": "Awareness and Training",
|
|
"AU": "Audit and Accountability",
|
|
"CA": "Assessment, Authorization, and Monitoring",
|
|
"CM": "Configuration Management",
|
|
"CP": "Contingency Planning",
|
|
"IA": "Identification and Authentication",
|
|
"IR": "Incident Response",
|
|
"MA": "Maintenance",
|
|
"MP": "Media Protection",
|
|
"PE": "Physical and Environmental Protection",
|
|
"PL": "Planning",
|
|
"PM": "Program Management",
|
|
"PS": "Personnel Security",
|
|
"PT": "Personally Identifiable Information Processing and Transparency",
|
|
"RA": "Risk Assessment",
|
|
"SA": "System and Services Acquisition",
|
|
"SC": "System and Communications Protection",
|
|
"SI": "System and Information Integrity",
|
|
"SR": "Supply Chain Risk Management",
|
|
}
|
|
return categories.get(family_code, "Unknown")
|