How the POODLE attack was used to exploit SSL v3.0

******************** Poodle Attack


  1. The client indicates the highest version it supports in its ClientHello handshake message.
  2. The server picks the highest version supported by both the client and the server, then communicates this version back to the client in its ServerHello handshake message. 
  3. However the hacker then manipulates to force the server to use a protocol version lower than the highest version supported by both the client and the server. Most likely SSL v3. 
  4. This downgrade to SSL v3 is always preferred because of the possibility and ease of performing Oracle Padding attack where the encrypted data can easily be guessed out.

You can check out the post below to have a detailed knowledge on how the Poodle attack was actually done using Oracle Padding technique


How the POODLE attack was used to exploit Security protocol SSL v3.0

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