![]() ![]() Please do not deviate from the steps by attempting to manually modify any log4j files. Plan for at least an hour of downtime as we need to scan every java archive to ensure effective remediation.The script ensures we find all instances of the JndiLookup.class file even inside nested java libraries. ![]() There are two components that don’t work with the removal of that function and we replace those specific components jars with 2.16. These instructions remove the jndilookup.class from vulnerable jars. These mitigation steps are for Tableau Server versions v2020.1 - v2021.4 prior to the Decemproduct release and newer releases.These steps are not meant to be executed on Decemproduct releases, which updated log4j to 2.16.You are on an impacted version (any product version released prior to December 15, 2021) and cannot update to a newer release. You have updated to the product release from December 15, 2021, and cannot update to a newer release (out of maintenance, outside of a company update window, etc.). The DecemTableau Product release, has integrated the Log4j 2.16 release, which disables JNDI Lookup by default. We have mitigated these outstanding components with configuration changes that disable the vulnerable JNDI lookup functionality. There may be diagnostic or auxiliary components still remaining. The DecemTableau Product releases updated the Log4j2 files to version 2.15. Alternatively, redeploying the services will also clean up the directories and deploy the updated files (see Configure Node Online Help Guide). For example, after making topology changes to change process counts or moving processes to another Tableau Server node. Versions of log4j- core-2.15 or earlier are safe to delete. These files are never accessed as part of Tableau Server operation and are safe to remove if desired. IMPORTANT NOTE: After updating to the Decemproduct releases, or newer, there may be cases where legacy files from previously configured processes are present on the file system. ![]()
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