Description
Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the Console plugin. An attacker with access to the Kibana Console API could send a request that will attempt to execute javascript code. This could possibly lead to an attacker executing arbitrary commands with permissions of the Kibana process on the host system.
Remediation
References
http://www.securityfocus.com/bid/106285
https://access.redhat.com/errata/RHBA-2018:3743
https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594
https://www.elastic.co/community/security