What’s New in Log4j 2.16.0? Key Security Fixes and Spring Boot Upgrade Guide

Apache Log4j 2.16.0 introduces default JNDI disabling, stricter protocol limits, and the removal of Message Lookups to harden security, and Spring Boot users can upgrade by globally adjusting the log4j2 version, with detailed steps illustrated in the accompanying image.

Programmer DD
Programmer DD
Programmer DD
What’s New in Log4j 2.16.0? Key Security Fixes and Spring Boot Upgrade Guide
Log4j logo
Log4j logo

Yesterday the Apache Log4j team released a new version: 2.16.0.

2.16.0 Updates

JNDI access disabled by default , users must enable it via the log4j2.enableJndi parameter.

Allowed protocols are limited to java, ldap, and ldaps; the ldap protocol is restricted to Java object access only.

Message Lookups completely removed , strengthening defenses against the vulnerability.

For more details see the official site: https://logging.apache.org/log4j/2.x/

How Spring Boot Users Can Upgrade

Spring Boot users can follow the method shared recently to upgrade all Log4j versions in a Spring Boot application by globally adjusting the Log4j2 version.

If you prefer a visual guide, see the image below:

Upgrade steps
Upgrade steps
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Programmer DD
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Programmer DD

A tinkering programmer and author of "Spring Cloud Microservices in Action"

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