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From "David Allsopp (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-3462) Determine IP address of Message sender from the socket, rather than trusting the sender
Date Mon, 07 Nov 2011 14:12:51 GMT

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

David Allsopp updated CASSANDRA-3462:
-------------------------------------

    Attachment: Cassandra-3462.patch

This small patch corrects the Header if the IP addresses don't match. Unfortunately it breaks
org.apache.cassandra.service.RemoveTest, which creates a ring of nodes with fake IP addresses
(127.0.0.2 etc), so not really sure how to proceed...
                
> 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
>    Affects Versions: 1.0.1
>         Environment: All.
>            Reporter: David Allsopp
>              Labels: authentication, security
>         Attachments: 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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