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27f6252 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | 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 enrichment
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 enrichment
csaf_entries = csaf_by_cve.get(cve_id, [])
if csaf_entries:
cve['csaf_correlations'] = csaf_entries
else:
cve['csaf_correlations'] = []
# ExploitDB enrichment
exploitdb_entries = exploitdb_by_cve.get(cve_id, [])
if exploitdb_entries:
cve['exploitdb_correlations'] = exploitdb_entries
else:
cve['exploitdb_correlations'] = []
# CWE-CAPEC-MITRE mapping enrichment
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', '')
})
# Collect all CAPEC entries
capec_entries.extend(mapping.get('capecs', []))
# Collect all MITRE techniques
mitre_techniques.extend(mapping.get('mitre_techniques', []))
# Extract tactics from techniques (e.g., T1548.004 -> T1548)
for technique in mapping.get('mitre_techniques', []):
if '.' in technique:
tactic = technique.split('.')[0]
if tactic not in mitre_tactics:
mitre_tactics.append(tactic)
# Remove duplicates
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)
# Count enrichments for logging
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 |