It has been announced that a remotely exploitable 0-day vulnerability for the popular Java logging library Log4j has been discovered and that code to exploit this is in the public domain. If exploited, this enables execution of code and potentially full control of the target machine - scanning for vulnerable machines is now being reported.
Details of the CVE can be found here: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4104
Log4j is used widely by many applications for logging and the vulnerability affects versions 2.0 to 2.14.1 of Log4j
Release : All versions
Security Analytics includes log4j-1.2.17, which has been determined to be vulnerable to the Log4Shell attack under CVE-4104. However, based on the configuration of Security Analytics, the system is not vulnerable, and cannot be made vulnerable without already having elevated permissions. Security Analytics may be further hardened by disabling the Anomaly Detection feature, which will prevent the log4j library from being loaded.