---

CVE-2021-44228 - log back

CVE-2021-44228 edited at 14 Dec 2021 19:48:32
References	- https://logging.apache.org/log4j/2.x/security.html#Fixed_in_Log4j_2.15.0 + https://logging.apache.org/log4j/2.x/security.html#CVE-2021-44228 https://www.lunasec.io/docs/blog/log4j-zero-day/

CVE-2021-44228 created at 12 Dec 2021 20:58:14
Severity	+ Critical
Remote	+ Remote
Type	+ Arbitrary code execution
Description	+ Apache Log4j2 <=2.14.1 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. + + In previous releases (>2.10) this behavior can be mitigated by setting system property "log4j2.formatMsgNoLookups" to "true" or it can be mitigated in prior releases (<2.10) by removing the JndiLookup class from the classpath (example: zip -q -d log4j-core-*.jar org/apache/logging/log4j/core/lookup/JndiLookup.class).
References	+ https://logging.apache.org/log4j/2.x/security.html#Fixed_in_Log4j_2.15.0 + https://www.lunasec.io/docs/blog/log4j-zero-day/
Notes