https://bz.apache.org/bugzilla/show_bug.cgi?id=61992
Bug ID: 61992
Summary: DOS after "Error parsing HTTP request header" message
Product: Tomcat 7
Version: 7.0.82
Hardware: PC
OS: Linux
Status: NEW
Severity: critical
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: apa...@resellerdesktop.de
Target Milestone: ---
After this message :
Jan 12, 2018 7:19:17 AM org.apache.coyote.http11.AbstractHttp11Processor
process
INFORMATION: Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at
DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in method name.
HTTP method names must be tokens
at
org.apache.coyote.http11.InternalAprInputBuffer.parseRequestLine(InternalAprInputBuffer.java:185)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1028)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at
org.apache.tomcat.util.net.AprEndpoint$SocketWithOptionsProcessor.run(AprEndpoint.java:2492)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Tomcat 7.0.82 stopped working.
Processes were running. Requests to static content were processed, as those
entries show :
Jan 12, 2018 7:22:01 AM org.apache.catalina.core.ApplicationContext log
INFORMATION: jsp: Error: /java/webapps/plattform/themes/TrueGrey/favicon.ico
(No such file or directory)
Jan 12, 2018 7:50:35 AM org.apache.catalina.core.ApplicationContext log
INFORMATION: jsp: Error: /java/webapps/plattform/themes/TrueGrey/favicon.ico
(No such file or directory)
Jan 12, 2018 8:16:30 AM org.apache.catalina.core.ApplicationContext log
INFORMATION: jsp: Error: /java/webapps/plattform/themes/TrueGrey/favicon.ico
(No such file or directory)
Jan 12, 2018 8:16:32 AM org.apache.catalina.core.ApplicationContext log
INFORMATION: jsp: Error: /java/webapps/plattform/themes/TrueGrey/favicon.ico
(No such file or directory)
Jan 12, 2018 8:16:41 AM org.apache.catalina.core.ApplicationContext log
INFORMATION: jsp: Error: /java/webapps/plattform/themes/normal/ambient (No such
file or directory)
Jan 12, 2018 8:17:41 AM org.apache.catalina.core.ApplicationContext log
INFORMATION: jsp: Error: /java/webapps/plattform/themes/normal/ambient (No such
file or directory)
But everything that included processing of dynamic pages as jsp, did not work
anymore.
Request did not get logged ( because they did not get processed to an defined
end ( endlessloop, my personal favorite ) :
O== Tomcat was running ...
java-1.8.0-openjdk-1.8.0.151-1.b12.fc26.i686
java-1.8.0-openjdk-headless-1.8.0.151-1.b12.fc26.i686
javapackages-tools-4.7.0-17.fc26.noarch
python3-javapackages-4.7.0-17.fc26.noarch
tzdata-java-2017c-1.fc26.noarch
Kernel 4.13.16-100.fc25.i686+PAE due to 4.14.11 fc26 ( the Spectre & Meltdown
patched kernel ) having extrem problems with all forms of java, not
specifically Tomcat.
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