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  1. ONOS
  2. ONOS-3349

Denial of Service: When using the ifwd app, ONOS terminates the connection to the switch that sent it an Ethernet frame with ether_type set to Jumbo Frame(0x8870)

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.3.1
    • Fix Version/s: 1.5.0
    • Component/s: None
    • Labels:
    • Environment:

      Description

      A Denial of Service attack on the switch-to-controller is possible when a PC(h2 in Topology) sends an OF switch an ethernet frame with ether_type Jumbo Frame(0x8870) twice.

      *********************************************************************
      Topology

      h2 – s1 – s2 – h3
      *********************************************************************

      The switches s1 and s2 do not have flow entries for the particular flow h2->h3, therefore punts the packet to the controller. The Intent reactive forwarding(ifwd) app is being used.

      root@mininet-vm:~# dumpf s1;dumpf s2
      NXST_FLOW reply (xid=0x4):
      cookie=0x2200004642d916, duration=196.611s, table=0, n_packets=63, n_bytes=5103, idle_age=1, priority=40000,dl_type=0x88cc actions=CONTROLLER:65535
      cookie=0x22000046524062, duration=196.611s, table=0, n_packets=0, n_bytes=0, idle_age=196, priority=5,ip actions=CONTROLLER:65535
      cookie=0x2200004642e760, duration=196.61s, table=0, n_packets=63, n_bytes=5103, idle_age=1, priority=40000,dl_type=0x8942 actions=CONTROLLER:65535
      cookie=0x2200004652411c, duration=196.612s, table=0, n_packets=3, n_bytes=126, idle_age=137, priority=40000,arp actions=CONTROLLER:65535
      NXST_FLOW reply (xid=0x4):
      cookie=0x22000046434d75, duration=196.702s, table=0, n_packets=64, n_bytes=5184, idle_age=1, priority=40000,dl_type=0x88cc actions=CONTROLLER:65535
      cookie=0x2200004652b4c1, duration=196.702s, table=0, n_packets=0, n_bytes=0, idle_age=196, priority=5,ip actions=CONTROLLER:65535
      cookie=0x22000046435bbf, duration=196.702s, table=0, n_packets=64, n_bytes=5184, idle_age=1, priority=40000,dl_type=0x8942 actions=CONTROLLER:65535
      cookie=0x2200004652b57b, duration=196.701s, table=0, n_packets=3, n_bytes=126, idle_age=134, priority=40000,arp actions=CONTROLLER:65535

      **************************************************************************************
      ONOS knows the destination MAC address but the source MAC is unknown.

      onos> hosts
      id=00:00:00:00:00:03/-1, mac=00:00:00:00:00:03, location=of:0000000000000002/2, vlan=-1, ip(s)=[10.0.0.3]

      onos> devices
      id=of:0000000000000001, available=true, role=MASTER, type=SWITCH, mfr=Nicira, Inc., hw=Open vSwitch, sw=2.0.2, serial=None, protocol=OF_10, channelId=127.0.0.1:36625
      id=of:0000000000000002, available=true, role=MASTER, type=SWITCH, mfr=Nicira, Inc., hw=Open vSwitch, sw=2.0.2, serial=None, protocol=OF_10, channelId=127.0.0.1:36624

      onos> links
      src=of:0000000000000001/3, dst=of:0000000000000002/1, type=DIRECT, state=ACTIVE
      src=of:0000000000000002/1, dst=of:0000000000000001/3, type=DIRECT, state=ACTIVE

      onos> topology
      created=2015-11-09 06:37:50, uptime=0 days, 0 hrs, 2 mins, 58 secs, devices=2, links=2, clusters=1

      onos> intents

      ONOS punts the packet to the edge switch but the intent fails.

      onos> intents
      id=0x1000006, state=FAILED, key=00:00:00:00:00:02/-100:00:00:00:00:03/-1, type=HostToHostIntent, appId=org.onosproject.ifwd
      resources=[00:00:00:00:00:02/-1, 00:00:00:00:00:03/-1]
      host1=00:00:00:00:00:02/-1, host2=00:00:00:00:00:03/-1

      Now, the PC(h2) sends the same packet again, see attached pcap.

      This causes a null-pointer exception that disconnects the switch. See log at the end of this description. The log level was set to INFO.

      It can be seen that of:0000000000000001 has a new TCP port.

      onos> devices
      id=of:0000000000000001, available=true, role=MASTER, type=SWITCH, mfr=Nicira, Inc., hw=Open vSwitch, sw=2.0.2, serial=None, protocol=OF_10, channelId=127.0.0.1:36639 <<<<-------Was 36625
      id=of:0000000000000002, available=true, role=MASTER, type=SWITCH, mfr=Nicira, Inc., hw=Open vSwitch, sw=2.0.2, serial=None, protocol=OF_10, channelId=127.0.0.1:36624

      onos> hosts
      id=00:00:00:00:00:03/-1, mac=00:00:00:00:00:03, location=of:0000000000000002/2, vlan=-1, ip(s)=[10.0.0.3]

      onos> intents
      id=0x1000006, state=FAILED, key=00:00:00:00:00:02/-100:00:00:00:00:03/-1, type=HostToHostIntent, appId=org.onosproject.ifwd
      resources=[00:00:00:00:00:02/-1, 00:00:00:00:00:03/-1]
      host1=00:00:00:00:00:02/-1, host2=00:00:00:00:00:03/-1

      **************************************************************************************
      The log from ONOS.

      onos> log:display
      2015-11-09 06:37:45,392 | INFO | ew I/O worker #3 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | New switch connection from /127.0.0.1:36623
      2015-11-09 06:37:45,392 | INFO | ew I/O worker #3 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Switch disconnected callback for sw:[/127.0.0.1:36623 DPID[?]]. Cleaning up ...
      2015-11-09 06:37:45,393 | WARN | ew I/O worker #3 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | no dpid in channelHandler registered for disconnected switch [/127.0.0.1:36623 DPID[?]]
      2015-11-09 06:37:47,327 | INFO | ew I/O worker #4 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | New switch connection from /127.0.0.1:36624
      2015-11-09 06:37:47,349 | INFO | ew I/O worker #4 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Received switch description reply OFDescStatsReplyVer10(xid=4294967290, flags=[], mfrDesc=Nicira, Inc., hwDesc=Open vSwitch, swDesc=2.0.2, serialNum=None, dpDesc=None) from switch at /127.0.0.1:36624
      2015-11-09 06:37:47,350 | INFO | ew I/O worker #4 | Controller | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | OpenFlow handshaker found for device 2: org.onosproject.driver.handshaker.NiciraSwitchHandshaker [? DPID[00:00:00:00:00:00:00:02]]
      2015-11-09 06:37:47,350 | INFO | ew I/O worker #4 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Added switch 00:00:00:00:00:00:00:02
      2015-11-09 06:37:47,451 | INFO | ew I/O worker #4 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Local role is MASTER for of:0000000000000002
      2015-11-09 06:37:47,452 | INFO | event-dispatch-0 | FlowObjectiveManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Driver ovs bound to device of:0000000000000002 ... initializing driver
      2015-11-09 06:37:47,461 | INFO | ew I/O worker #4 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Device of:0000000000000002 connected
      2015-11-09 06:37:47,468 | INFO | ew I/O worker #4 | PortStatsCollector | 172 - org.onosproject.onos-of-provider-device - 1.3.1.SNAPSHOT | Starting Port Stats collection thread for 00:00:00:00:00:00:00:02
      2015-11-09 06:37:47,468 | INFO | ew I/O worker #4 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Processing 0 pending port status messages for 00:00:00:00:00:00:00:02
      2015-11-09 06:37:47,477 | INFO | ew I/O worker #4 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Transitioned switch 00:00:00:00:00:00:00:02 to MASTER
      2015-11-09 06:37:47,528 | INFO | ew I/O worker #5 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | New switch connection from /127.0.0.1:36625
      2015-11-09 06:37:47,531 | INFO | ew I/O worker #5 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Received switch description reply OFDescStatsReplyVer10(xid=4294967290, flags=[], mfrDesc=Nicira, Inc., hwDesc=Open vSwitch, swDesc=2.0.2, serialNum=None, dpDesc=None) from switch at /127.0.0.1:36625
      2015-11-09 06:37:47,531 | INFO | ew I/O worker #5 | Controller | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | OpenFlow handshaker found for device 1: org.onosproject.driver.handshaker.NiciraSwitchHandshaker [? DPID[00:00:00:00:00:00:00:01]]
      2015-11-09 06:37:47,531 | INFO | ew I/O worker #5 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Added switch 00:00:00:00:00:00:00:01
      2015-11-09 06:37:47,646 | INFO | nos-topo-build-6 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128170796841872, creationTime=1447079867480, computeCost=151394, clusters=1, devices=1, links=0}

      changed
      2015-11-09 06:37:47,659 | INFO | ew I/O worker #5 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Local role is MASTER for of:0000000000000001
      2015-11-09 06:37:47,661 | INFO | ew I/O worker #5 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Device of:0000000000000001 connected
      2015-11-09 06:37:47,661 | INFO | ew I/O worker #5 | PortStatsCollector | 172 - org.onosproject.onos-of-provider-device - 1.3.1.SNAPSHOT | Starting Port Stats collection thread for 00:00:00:00:00:00:00:01
      2015-11-09 06:37:47,662 | INFO | ew I/O worker #5 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Processing 0 pending port status messages for 00:00:00:00:00:00:00:01
      2015-11-09 06:37:47,662 | INFO | event-dispatch-0 | FlowObjectiveManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Driver ovs bound to device of:0000000000000001 ... initializing driver
      2015-11-09 06:37:47,662 | INFO | ew I/O worker #5 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Transitioned switch 00:00:00:00:00:00:00:01 to MASTER
      2015-11-09 06:37:47,682 | INFO | nos-topo-build-7 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128170997629924, creationTime=1447079867681, computeCost=138497, clusters=2, devices=2, links=0}

      changed
      2015-11-09 06:37:47,738 | INFO | nos-topo-build-0 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128171047958999, creationTime=1447079867731, computeCost=3589785, clusters=2, devices=2, links=1}

      changed
      2015-11-09 06:37:50,598 | INFO | nos-topo-build-1 | DistributedTopologyStore | 95 - org.onosproject.onos-core-dist - 1.3.1.SNAPSHOT | Cluster rooted at of:0000000000000001 has 2 broadcast-points; #-489164385
      2015-11-09 06:37:50,599 | INFO | nos-topo-build-1 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128173914199664, creationTime=1447079870597, computeCost=196078, clusters=1, devices=2, links=2}

      changed
      2015-11-09 06:41:59,890 | INFO | ew I/O worker #5 | IntentReactiveForwarding | 215 - org.onosproject.onos-app-ifwd - 1.3.1.SNAPSHOT | sending packet: DefaultOutboundPacket{sendThrough=of:0000000000000002, treatment=DefaultTrafficTreatment{immediate=[OUTPUT

      {port=2}

      ], deferred=[], transition=None, cleared=false, metadata=null}}
      2015-11-09 06:42:55,366 | ERROR | ew I/O worker #5 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Error while processing message from switch org.onosproject.driver.handshaker.NiciraSwitchHandshaker [/127.0.0.1:36625 DPID[00:00:00:00:00:00:00:01]]state ACTIVE
      java.lang.NullPointerException
      at org.onosproject.ifwd.IntentReactiveForwarding.setUpConnectivity(IntentReactiveForwarding.java:225)
      at org.onosproject.ifwd.IntentReactiveForwarding.access$200(IntentReactiveForwarding.java:65)
      at org.onosproject.ifwd.IntentReactiveForwarding$ReactivePacketProcessor.process(IntentReactiveForwarding.java:149)
      at org.onosproject.net.packet.impl.PacketManager$InternalPacketProviderService.processPacket(PacketManager.java:284)
      at org.onosproject.provider.of.packet.impl.OpenFlowPacketProvider$InternalPacketProvider.handlePacket(OpenFlowPacketProvider.java:170)
      at org.onosproject.openflow.controller.impl.OpenFlowControllerImpl.processPacket(OpenFlowControllerImpl.java:282)
      at org.onosproject.openflow.controller.impl.OpenFlowControllerImpl$OpenFlowSwitchAgent.processMessage(OpenFlowControllerImpl.java:606)
      at org.onosproject.openflow.controller.driver.AbstractOpenFlowSwitch.handleMessage(AbstractOpenFlowSwitch.java:203)
      at org.onosproject.openflow.controller.impl.OFChannelHandler.dispatchMessage(OFChannelHandler.java:1185)
      at org.onosproject.openflow.controller.impl.OFChannelHandler.access$1800(OFChannelHandler.java:81)
      at org.onosproject.openflow.controller.impl.OFChannelHandler$ChannelState$8.processOFPacketIn(OFChannelHandler.java:636)
      at org.onosproject.openflow.controller.impl.OFChannelHandler$ChannelState.processOFMessage(OFChannelHandler.java:884)
      at org.onosproject.openflow.controller.impl.OFChannelHandler.messageReceived(OFChannelHandler.java:1166)
      at org.jboss.netty.handler.timeout.IdleStateAwareChannelHandler.handleUpstream(IdleStateAwareChannelHandler.java:36)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.handler.timeout.ReadTimeoutHandler.messageReceived(ReadTimeoutHandler.java:184)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.handler.timeout.IdleStateHandler.messageReceived(IdleStateHandler.java:294)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)[61:org.jboss.netty:3.9
      .2.Final]
      at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:318)
      at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)[61:org.jboss.netty:3.9.2.Final]
      at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178)[61:org.jboss.netty:3.9.2.Final]
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_31]
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_31]
      at java.lang.Thread.run(Thread.java:745)[:1.8.0_31]
      2015-11-09 06:42:55,372 | INFO | ew I/O worker #5 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Switch disconnected callback for sw:org.onosproject.driver.handshaker.NiciraSwitchHandshaker [/127.0.0.1:36625 DPID[00:00:00:00:00:00:00:01]]. Cleaning up ...
      2015-11-09 06:42:55,372 | INFO | ew I/O worker #5 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | org.onosproject.driver.handshaker.NiciraSwitchHandshaker [/127.0.0.1:36625 DPID[00:00:00:00:00:00:00:01]]:removal called
      2015-11-09 06:42:55,372 | INFO | ew I/O worker #5 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Device of:0000000000000001 disconnected from this node
      2015-11-09 06:42:55,376 | WARN | nager-background | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Node was instructed to be STANDBY role for of:0000000000000001, but this node cannot reach the device. Relinquishing role.
      2015-11-09 06:42:55,378 | INFO | ew I/O worker #5 | PortStatsCollector | 172 - org.onosproject.onos-of-provider-device - 1.3.1.SNAPSHOT | Stopping Port Stats collection thread for 00:00:00:00:00:00:00:01
      2015-11-09 06:42:55,385 | INFO | nos-topo-build-2 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128478700747048, creationTime=1447080175384, computeCost=84838, clusters=1, devices=1, links=0}

      changed
      2015-11-09 06:42:55,686 | INFO | ew I/O worker #6 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | New switch connection from /127.0.0.1:36639
      2015-11-09 06:42:55,688 | INFO | ew I/O worker #6 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Received switch description reply OFDescStatsReplyVer10(xid=4294967290, flags=[], mfrDesc=Nicira, Inc., hwDesc=Open vSwitch, swDesc=2.0.2, serialNum=None, dpDesc=None) from switch at /127.0.0.1:36639
      2015-11-09 06:42:55,688 | INFO | ew I/O worker #6 | Controller | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | OpenFlow handshaker found for device 1: org.onosproject.driver.handshaker.NiciraSwitchHandshaker [? DPID[00:00:00:00:00:00:00:01]]
      2015-11-09 06:42:55,689 | INFO | ew I/O worker #6 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Added switch 00:00:00:00:00:00:00:01
      2015-11-09 06:42:55,691 | INFO | ew I/O worker #6 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Local role is MASTER for of:0000000000000001
      2015-11-09 06:42:55,695 | INFO | event-dispatch-0 | FlowObjectiveManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Driver ovs bound to device of:0000000000000001 ... initializing driver
      2015-11-09 06:42:55,695 | INFO | ew I/O worker #6 | DeviceManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Device of:0000000000000001 connected
      2015-11-09 06:42:55,696 | INFO | ew I/O worker #6 | PortStatsCollector | 172 - org.onosproject.onos-of-provider-device - 1.3.1.SNAPSHOT | Starting Port Stats collection thread for 00:00:00:00:00:00:00:01
      2015-11-09 06:42:55,696 | INFO | ew I/O worker #6 | OFChannelHandler | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Processing 0 pending port status messages for 00:00:00:00:00:00:00:01
      2015-11-09 06:42:55,696 | INFO | ew I/O worker #6 | ntrollerImpl$OpenFlowSwitchAgent | 169 - org.onosproject.onos-of-ctl - 1.3.1.SNAPSHOT | Transitioned switch 00:00:00:00:00:00:00:01 to MASTER
      2015-11-09 06:42:55,708 | INFO | nos-topo-build-3 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128479022125358, creationTime=1447080175705, computeCost=97193, clusters=2, devices=2, links=0}

      changed
      2015-11-09 06:42:55,803 | INFO | nos-topo-build-4 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128479117962824, creationTime=1447080 175801, computeCost=182132, clusters=2, devices=2, links=1}

      changed
      2015-11-09 06:42:57,498 | INFO | nos-topo-build-5 | DistributedTopologyStore | 95 - org.onosproject.onos-core-dist - 1.3.1.SNAPSHOT | Cluster rooted at of:0000000000000001 has 2 broadcast-points; #-489164385
      2015-11-09 06:42:57,500 | INFO | nos-topo-build-5 | TopologyManager | 93 - org.onosproject.onos-core-net - 1.3.1.SNAPSHOT | Topology DefaultTopology

      {time=1128480813638673, creationTime=1447080177497, computeCost=194480, clusters=1, devices=2, links=2}

      changed

      **************************************************************************************
      I can provide the program that sends the jumbo frame if required.

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            People

            Assignee:
            jono Jonathan Hart
            Reporter:
            hashkash Kashyap Thimmaraju
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              Dates

              Created:
              Updated: