Confluence log has java.lang.IllegalArgumentException: Invalid character (CR or LF) found in method name
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問題
The following appears in the catalina.out or atlassian-confluence.log
Apr 15, 2016 10:44:21 PM org.apache.coyote.http11.AbstractHttp11Processor process
INFO: Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character (CR or LF) found in method name
at org.apache.coyote.http11.AbstractNioInputBuffer.parseRequestLine(AbstractNioInputBuffer.java:228)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$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)診断
環境
- Confluence running on tomcat
If access logging is enabled, they show entries like this
169.229.3.91 - - [15/Apr/2016:22:44:21 +1000] "-" 400 - "-" "-" null
原因
A research scanning machine from the University of California at Berkeley regularly conducts scans of the entire Internet, so you may have been scanned as part of an ongoing research project.
The machines the scanning is coming from are
- http://researchscan0.eecs.berkeley.edu/
- http://researchscan1.eecs.berkeley.edu/
- http://researchscan2.eecs.berkeley.edu/
- http://researchscan3.eecs.berkeley.edu/
- http://researchscan4.eecs.berkeley.edu/
ソリューション
If you have been or are currently being scanned and would like to opt out, please email cesr-scanning@lists.eecs.berkeley.edu with the IP ranges you would like to exclude in CIDR format. For most Confluence machines this is the single IP address that the machine is running on.