https://issues.apache.org/bugzilla/show_bug.cgi?id=56180
Bug ID: 56180
Summary: Bugfix 55943 changed backward compatibility in
classloading
Product: Tomcat 7
Version: 7.0.52
Hardware: PC
OS: Linux
Status: NEW
Severity: regression
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
Between Tomcat 7.0.50 and Tomcat 7.0.52 changed logic of class loading which
may prevent to protect against CVE-2014-0050
My usecase:
1. I have
jcl-over-slf4j-1.7.5.jar
jul-to-slf4j.jar
log4j-over-slf4j-1.7.5.jar
logback-classic.jar
logback-core.jar
slf4j-api.jar
in Tomcat lib folder.
2. With help of setenv.sh I've add this jars to classpath
export
CLASSPATH="${CATALINA_HOME}/conf/:${CATALINA_HOME}/lib/jul-to-slf4j.jar:${CATALINA_HOME}/lib/slf4j-api.jar:${CATALINA_HOME}/lib/logback-classic.jar:${CATALINA_HOME}/lib/logback-core.jar:${CATALINA_HOME}/lib/mail.jar:${JAVA_HOME}/lib/tools.jar"
3. After update to tomcat 7.0.52 I've got
Caused by: java.lang.LinkageError: loader constraint violation: when resolving
method
"org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;"
the class loader (instance of org/apache/catalina/loader/WebappClassLoader) of
the current class, org/slf4j/LoggerFactory, and the class loader (instance of
sun/misc/Launcher$AppClassLoader) for resolved class,
org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type
LoggerFactory; used in the signature
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:299)
~[slf4j-api.jar:1.7.5]
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:269)
~[slf4j-api.jar:1.7.5]
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:281)
~[slf4j-api.jar:1.7.5]
at com.codenvy.inject.ModuleScanner.<clinit>(ModuleScanner.java:36)
~[na:na]
at java.lang.Class.forName0(Native Method) ~[na:1.7.0_51]
at java.lang.Class.forName(Class.java:270) ~[na:1.7.0_51]
at
org.apache.catalina.startup.WebappServiceLoader.loadServices(WebappServiceLoader.java:187)
~[catalina.jar:7.0.52]
at
org.apache.catalina.startup.WebappServiceLoader.load(WebappServiceLoader.java:152)
~[catalina.jar:7.0.52]
at
org.apache.catalina.startup.ContextConfig.processServletContainerInitializers(ContextConfig.java:1543)
~[ca
Note. See comment in issue. I assume he have the same problem
https://issues.apache.org/bugzilla/show_bug.cgi?id=55943#c8
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