A critical security vulnerability has been identified in the popular "Apache Log4j 2" library. This vulnerability is identified as CVE-2021-44228. Log4j in Jenkins The Jenkins security team has confirmed that Log4j is not used in Jenkins core. Jenkins plugins may be using Log4j. You can identify whether Log4j is included with any plugin by running the following Groovy script in the Script Console: org.apache.logging.log4j.core.lookup.JndiLookup.class.protectionDomain.codeSource If this results in the following error,...

This is a speaker blogpost for a DevOps World | Jenkins World 2019 talk in Lisbon, Portugal Come join us at DevOps World | Jenkins World 2019 for "Thinking about Jenkins Security", a talk about securing your Jenkins server. We’ll review the layers that secure Jenkins and describe techniques that you can use to protect your Jenkins server. Topics will include: The secure by default configuration that Jenkins...

About API tokens Jenkins API tokens are an authentication mechanism that allows a tool (script, application, etc.) to impersonate a user without providing the actual password for use with the Jenkins API or CLI. This is especially useful when your security realm is based on a central directory, like Active Directory or LDAP, and you don’t want to store your password in scripts. Recent versions of Jenkins also make...