When developing Java applications, it is easy to get used to invoking logging on the provided logger via its log level-specific methods.

Log4J is an open source Java-based logging tool available from Apache. It has the ability to perform network lookups using the Java Naming and Directory Interface to obtain services from the ...

The issues involve several features of the logging software, including the Java Naming and Directory Interface (JDNI) and JMSAppender event messages, both of which allow remote code execution.