Amazon EMR now supports Amazon EC2 Instance Metadata Service (IMDS) v2, in addition to v1, for all IMDS calls to EMR clusters. Instance metadata is data about your instance that you can use to configure or manage the running instance. IMDSv1 is fully secure and AWS will continue to support it. But IMDSv2 adds new “belt and suspenders” protections for four types of vulnerabilities that could be used to try to access the IMDS. For more information, please read the
AWS Security blogpost.
Source:: Amazon AWS