[jira] [Resolved] (CASSANDRA-3462) Determine IP address of Message sender from the socket, rather than trusting the sender

["David Allsopp (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-3462?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Allsopp resolved CASSANDRA-3462.
--------------------------------------

    Resolution: Not A Problem
      Assignee:     (was: David Allsopp)

Closed to reflect the status of the parent issue (CASSANDRA-2274).
                
> Determine IP address of Message sender from the socket, rather than trusting the sender
> ---------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3462
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3462
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>         Environment: All.
>            Reporter: David Allsopp
>              Labels: authentication, security
>             Fix For: 1.0.3
>
>         Attachments: Cassandra-3462-v2.patch, Cassandra-3462.patch
>
>
> A prerequisite for preventing malicious nodes from joining a cluster (parent issue https://issues.apache.org/jira/browse/CASSANDRA-2274) is that we can determine the IP of the sender (setting aside the fact that this may be spoofed by a determined attacker). 
> Currently we deserialize the "from" IP address from the incoming message header, using Header.deserialize() and CompactEndpointSerializationHelper.deserialize() i.e. we trust the sender to supply a true IP address.
> We could stop storing the IP address in the message Header at all (saving a small amount of space) and set the 'true' sender IP upon receipt of the message, in org.apache.cassandra.net.IncomingTcpConnection, using socket.getInetAddress().

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