[jboss-jira] [JBoss JIRA] Created: (JBREM-666) Broken or malicious clients can lock up the remoting server

Broken or malicious clients can lock up the remoting server ----------------------------------------------------------- Key: JBREM-666 URL: http://jira.jboss.com/jira/browse/JBREM-666 Project: JBoss Remoting Issue Type: Bug Security Level: Public (Everyone can see) Affects Versions: 2.2.0.Alpha4 Reporter: Ovidiu Feodorov Assigned To: Tom Elrod Priority: Critical Fix For: 2.2.0.Alpha5 Due to the way the main socket accept loop is coded, there is an interval during which the main acceptor thread ("SocketServerInvoker#0-4457" in the log below) interacts with the new connection's input and output streams, before handing the connection over to a worker thread from the pool. During this period, the main acceptor thread is vulnerable to lock-ups, caused by either a broken or malicious client. Log from a production environment: 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.transport.socket.SocketServerInvoker] @SocketServerInvoker#0-4457 Socket is going to be accepted 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.transport.socket.SocketServerInvoker] @SocketServerInvoker#0-4457 Accepted: Socket[addr=/10.1.13.73,port=16999,localport=4457] 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.transport.socket.SocketServerInvoker] @SocketServerInvoker#0-4457 try to get a thread for processing 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.transport.socket.SocketServerInvoker] @SocketServerInvoker#0-4457 Got thread for processing - Thread[SocketServerInvokerThread-10.1.122.40-0,5,jboss] 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.transport.socket.SocketServerInvoker] @SocketServerInvoker#0-4457 Reusing thread t=Thread[SocketServerInvokerThread-10.1.122.40-0,5,jboss] 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.serialization.impl.jboss.JBossSerializationManager] @SocketServerInvoker#0-4457 Creating JBossObjectOutputStream 2007-01-08 16:13:31,473 624292 TRACE [org.jboss.remoting.serialization.impl.jboss.JBossSerializationManager] @SocketServerInvoker#0-4457 Creating JBossObjectInputStream 16:13:31,473 is the last time main acceptor thread is heard from (the logged interval ends at 16:22:34 with the server shutdown). -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira