Hi,

we are using tomcat version 8.5.20 and we encounter the following exceptions

24-Jul-2019 23:24:45.398 SEVERE [https-jsse-nio-8443-exec-104]
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun
 java.lang.IllegalArgumentException
at java.nio.Buffer.position(Buffer.java:244)
at 
org.apache.tomcat.util.net.TLSClientHelloExtractor.skipBytes(TLSClientHelloExtractor.java:221)
at 
org.apache.tomcat.util.net.TLSClientHelloExtractor.<init>(TLSClientHelloExtractor.java:118)
at 
org.apache.tomcat.util.net.SecureNioChannel.processSNI(SecureNioChannel.java:276)
at 
org.apache.tomcat.util.net.SecureNioChannel.handshake(SecureNioChannel.java:174)
at 
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434)
at 
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at 
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)

and it happened a lot of times in a day everyday. However, when
upgrade tomcat to version 8.5.43 (current latest), the exception no
longer happened.

We would like to understand better which patch that fix the problem
above. Can anyone give links to the fixes?

Thank you and apache tomcat is a great product!

Jason

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