EC2 Metadata Insecure

The EC2 Metadata Service (IMDS) lacks authentication, posing a risk of unauthorised access to sensitive services. Adversaries could extract valuable information, such as service tokens, from this endpoint, potentially gaining unauthorised access to other AWS services.

Remediation

Enable token requirement for IMDS. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/instance#metadata-options

Metadata

Severity: high
Slug: ec2-metadata-insecure

CWEs

284: Improper Access Control

OWASP

A05:2021: Security Misconfiguration

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