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Remko Popma commented on LOG4J2-3235: ------------------------------------- Which version of BCEL do you have? It appears that the version you are using attempts to scan files under {{META-INF/}} in the Jar file as classes. Tools like BCEL are not supposed to do this. I believe this has been fixed long ago, but the version you are using still has this bug. Can you look into upgrading BCEL? > Exception: Invalid byte tag in constant pool: 19 for module-info.class Java 7 > ----------------------------------------------------------------------------- > > Key: LOG4J2-3235 > URL: https://issues.apache.org/jira/browse/LOG4J2-3235 > Project: Log4j 2 > Issue Type: Bug > Components: API > Reporter: Saptarshi De > Priority: Critical > Fix For: 2.12.1 > > > Due to the recent vulnerability CVE-2021-44228 and CVE-2021-45046, We are > updating to Log4j 1.12.2 on our Java 7 environment. > Log4j 1.12.2 is supposed to be compatible with Java 7. > We face the below exception on startup. > Please suggest a solution for the same. > > {code:java} > 15-Dec-2021 12:55:32.722 SEVERE [localhost-startStop-1] > org.apache.catalina.startup.ContextConfig.processAnnotationsJar Unable to > process Jar entry [META-INF/versions/9/module-info.class] from Jar > [jar:file:/------/log4j-api-2.12.2.jar!/] for annotations > org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag > in constant pool: 19 > at > org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:97) > at > org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:55) > at > org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:177) > at > org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:85) > at > org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2011) > at > org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1961) > at > org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1936) > at > org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1897) > at > org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1149) > at > org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771) > at > org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305) > at > org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117) > at > org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) > at > org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5066) > at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) > at > org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725) > at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701) > at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) > at > org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1101) > at > org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1786) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:745) > {code} > -- This message was sent by Atlassian Jira (v8.20.1#820001)