log4j-core: DoS in log4j 2.x with thread context message pattern and context lookup pattern (incomplete fix for CVE-2021-44228)

A flaw was found in the Apache Log4j logging library in versions from 2.0.0 and before 2.16.0. A remote attacker with control over Thread Context Map MDC input data could craft malicious input using a JNDI Lookup pattern resulting in remote code execution RCE in a limited number of environments...