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Published: 10 December 2021

Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.



CVSS 3 base score: 10.0


Package Release Status
Launchpad, Ubuntu, Debian
Released (2.15.0)
Ubuntu 21.10 (Impish Indri)
Released (2.15.0-
Ubuntu 21.04 (Hirsute Hippo)
Released (2.15.0-
Ubuntu 20.04 LTS (Focal Fossa)
Released (2.15.0-
Ubuntu 18.04 LTS (Bionic Beaver)
Released (2.10.0-2ubuntu0.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (2.4-2ubuntu0.1~esm1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist