CVE-2021-44228

Vulnerability details

Apache Log4j2 contains a vulnerability where JNDI features do not protect against attacker-controlled JNDI-related endpoints, allowing for remote code execution.

Added to CISA KEV: 2021-12-10

Ransomware campaign use: Known

CISA due date: 2021-12-24

Defensive guidance from CISA

For all affected software assets for which updates exist, the only acceptable remediation actions are: 1) Apply updates; OR 2) remove affected assets from agency networks. Temporary mitigations using one of the measures provided at https://www.cisa.gov/uscert/ed-22-02-apache-log4j-recommended-mitigation-measures are only acceptable until updates are available.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.