EC2 instance must not use a deprecated instance metadata version
High
AWS
General
aws-ec2-instance-imdsv2
Applies to
AWS::EC2::Instance
What CGPulse checks
A resource passes this rule when metadataOptions.httpTokens must not equal optional. Anything else is reported as a finding with the evaluated property value attached as evidence.
How to fix it
Require IMDSv2 (set HttpTokens to required) to prevent SSRF-based credential theft from metadata. In AWS Console: EC2 > Instance settings > Modify instance metadata options. See: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html
Terraform
resource "aws_instance" "{name}" {
metadata_options {
http_tokens = "required"
}
}
Compliance frameworks
Is your environment compliant with this rule?
CGPulse checks it — and 621 others — against your Azure and AWS accounts with read-only access.
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