JDK-8158963 : RMI server-side multiplex protocol should be disabled
- Type: Bug
- Component: core-libs
- Sub-Component: java.rmi
- Affected Version: 9
- Priority: P3
- Status: Closed
- Resolution: Fixed
- Submitted: 2016-06-07
- Updated: 2018-04-28
- Resolved: 2016-11-03
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| JDK 9 |
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9 b144Fixed  |
Related Reports
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Sub Tasks
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JDK-8168690 :
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Description
The RMI code supports a disused protocol called the "multiplex" protocol. This was removed by JDK-4183204 in JDK 1.2.2. The server side of the RMI protocol should be disabled and eventually removed. A system property "sun.rmi.transport.tcp.enableMultiplexProtocol" can be added with a default of "false". In TCPTransport.ConnectionHandler.run(), the boolean should be checked when a request is received to create a multiplexProtocol connection. If the flag is false, it should send log the rejection and send a Nak. For compatibility, setting the system property to true will accept and process the request as before.