| from typing import Dict, List, Optional |
| import logging |
|
|
| def enrich_cve_with_cti( |
| cve: Dict, |
| kev_by_cve: Dict[str, Dict], |
| csaf_by_cve: Dict[str, List[Dict]], |
| exploitdb_by_cve: Dict[str, List[Dict]], |
| cwe_capec_mitre_mapping: Dict, |
| logger: Optional[logging.Logger] = None |
| ) -> Dict: |
| """Enrich a CVE entry with CTI data (KEV, CSAF, ExploitDB, CWE-CAPEC-MITRE mapping).""" |
| cve_id = cve.get('cve_id') or cve.get('id') |
| if not cve_id: |
| if logger: |
| logger.warning("CVE entry missing cve_id or id") |
| return cve |
| |
| |
| kev_entry = kev_by_cve.get(cve_id) |
| if kev_entry: |
| cve['is_in_kev'] = True |
| cve['kev_data'] = kev_entry |
| else: |
| cve['is_in_kev'] = False |
| |
| |
| csaf_entries = csaf_by_cve.get(cve_id, []) |
| if csaf_entries: |
| cve['csaf_correlations'] = csaf_entries |
| else: |
| cve['csaf_correlations'] = [] |
| |
| |
| exploitdb_entries = exploitdb_by_cve.get(cve_id, []) |
| if exploitdb_entries: |
| cve['exploitdb_correlations'] = exploitdb_entries |
| else: |
| cve['exploitdb_correlations'] = [] |
| |
| |
| cwe_ids = cve.get('cwe_ids', []) |
| capec_entries = [] |
| mitre_techniques = [] |
| mitre_tactics = [] |
| cwe_mappings = [] |
| |
| for cwe_id in cwe_ids: |
| if cwe_id in cwe_capec_mitre_mapping: |
| mapping = cwe_capec_mitre_mapping[cwe_id] |
| cwe_mappings.append({ |
| 'cwe_id': cwe_id, |
| 'capecs': mapping.get('capecs', []), |
| 'mitre_techniques': mapping.get('mitre_techniques', []), |
| 'mitre_description': mapping.get('mitre_description', '') |
| }) |
| |
| |
| capec_entries.extend(mapping.get('capecs', [])) |
| |
| |
| mitre_techniques.extend(mapping.get('mitre_techniques', [])) |
| |
| |
| for technique in mapping.get('mitre_techniques', []): |
| if '.' in technique: |
| tactic = technique.split('.')[0] |
| if tactic not in mitre_tactics: |
| mitre_tactics.append(tactic) |
| |
| |
| capec_entries = list(set(capec_entries)) |
| mitre_techniques = list(set(mitre_techniques)) |
| mitre_tactics = list(set(mitre_tactics)) |
| |
| cve['cwe_capec_mitre_mappings'] = cwe_mappings |
| cve['capec_entries'] = capec_entries |
| cve['mitre_techniques'] = mitre_techniques |
| cve['mitre_tactics'] = mitre_tactics |
| |
| return cve |
|
|
|
|
| def enrich_all_cves( |
| cves: List[Dict], |
| kev_by_cve: Dict[str, Dict], |
| csaf_by_cve: Dict[str, List[Dict]], |
| exploitdb_by_cve: Dict[str, List[Dict]], |
| cwe_capec_mitre_mapping: Dict, |
| logger: Optional[logging.Logger] = None |
| ) -> List[Dict]: |
| """Enrich all CVE entries in the list with CTI data.""" |
| enriched = [] |
| cwe_mapping_count = 0 |
| capec_count = 0 |
| mitre_count = 0 |
| |
| for cve in cves: |
| enriched_cve = enrich_cve_with_cti( |
| cve, |
| kev_by_cve, |
| csaf_by_cve, |
| exploitdb_by_cve, |
| cwe_capec_mitre_mapping, |
| logger |
| ) |
| enriched.append(enriched_cve) |
| |
| |
| if enriched_cve.get('cwe_capec_mitre_mappings'): |
| cwe_mapping_count += 1 |
| if enriched_cve.get('capec_entries'): |
| capec_count += 1 |
| if enriched_cve.get('mitre_techniques'): |
| mitre_count += 1 |
| |
| if logger: |
| logger.info(f"Enriched {len(enriched)} CVEs with CTI data.") |
| logger.info(f"CWE-CAPEC-MITRE mappings: {cwe_mapping_count} CVEs") |
| logger.info(f"CAPEC entries: {capec_count} CVEs") |
| logger.info(f"MITRE techniques: {mitre_count} CVEs") |
| |
| return enriched |
