Friday, 24 October 2014

When Poodles Attack - Poodle Checker Tool


It’s not too often you get to be excited about a security threat. However, the POODLE security threat seems to put a smile on my face every time I see it written somewhere… Poodles are just so innocent and ridiculous looking to take seriously as a major threat. So in a bid to take this security issue more seriously, I have built a Powershell tool for remotely checking servers for having either SSL 2.0 or SSL 3.0 enabled on them.


More Detail on the POODLE threat


Here are some links that explain the POODLE threat in a little more detail:


POODLE Checker Tool


  • The tool will try and connect using SSL 2.0 and SSL 3.0 to any server FQDN/IP and port (multiple ports can be entered with a comma separating them) you enter.
  • Press the Test button and it will check all the ports in the ports text box. The tool will report in the Powershell window which ports have SSL 2.0 and SSL 3.0 running on them.
  • The tool will also visually display the results…
  • Script is signed.

Update 1.01
  • Added additional checking of TLS (1.0, 1.1, 1.2) protocols so you can better understand all the TLS connection options available on the server before deciding to disable SSL. 
Update 1.02 (16/2/2015)
  • Added the ability to handle multiple comma separated IP Addresses/DNS Names.
  • Added Cancel button to stop testing.
  • Disabled text boxes during testing phase.
  • Textboxes now stretch when resized.

      Download Version 1.02:



      Standard SSL Port Numbers


      SSL can technically run on any port that you configure and application to use. However, the well-known port numbers for applications that use SSL (as defined by IANA, and IETF) are listed below:

      Protocol
      Port
      Description
      nsiiops
      261
      IIOP Name Service over TLS/SSL
      https
      443
      http protocol over TLS/SSL
      ddm-ssl
      448
      DDM-SSL
      smtps
      465
      smtp protocol over TLS/SSL
      nntps
      563
      nntp protocol over TLS/SSL
      sshell
      614
      SSLshell
      ldaps
      636
      ldap protocol over TLS/SSL
      ftps-data
      989
      ftp protocol, data, over TLS/SSL
      ftps
      990
      ftp, control, over TLS/SSL
      telnets
      992
      telnet protocol over TLS/SSL
      imaps
      993
      imap4 protocol over TLS/SSL
      ircs
      994
      irc protocol over TLS/SSL
      pop3s
      995
      pop3 protocol over TLS/SSL

      Note: A listing of all IANA port assignments can currently be found at: http://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

      I have made the tool load all of these ports into the port text field by default.

      Note: The documented attack vector for POODLE is described for HTTPS connections, and not necessarily for these other protocols. The tool checks all of these protocols to check if your server is still accepting SSL2/3 connections in order to determine if it's globally enabled (in Windows the registry key effects SSL across most applications). Also, additional attack vectors may be found for other protocols, so if your applications can support newer versions of TLS it is probably wise to turn these older versions of SSL anyway.

      The Wrap Up


      There you have it, short and sweet! I hope the tool is useful to you and helps you take security issues more seriously J

      Let me know if you find any bugs or have any issues.


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