rage.fail

aws-ec2-replace-instance-profile

Swap the role an existing instance runs as.

derived aws emits CanAttachIdentity

match

A conjunctive graph pattern. Variables (?x) bind node ids; every clause must hold.

{'principal': None} CanPassIdentity {'role': None}

where

?principal has EFFECTIVE ec2:ReplaceIamInstanceProfileAssociation on ?instance ?role trust policy allows ec2.amazonaws.com; PassedToService includes ec2

emit

source type	`Identity`
target type	`Compute`
source	`<principal>`
target	`<EC2 instance>`
permissions	`iam:PassRole` `ec2:ReplaceIamInstanceProfileAssociation`
conditions	`role_compatibility` `iam_permission`

Narrative

{principal.name} can replace the instance profile on {instance.name} with role {role.name} (ec2:ReplaceIamInstanceProfileAssociation + iam:PassRole).

Raw rule rules/derived/aws/ec2.yaml

id: aws-ec2-replace-instance-profile
emits: CanAttachIdentity
description: Swap the role an existing instance runs as.
match:
- - principal: null
  - CanPassIdentity
  - role: null
where:
- ?principal has EFFECTIVE ec2:ReplaceIamInstanceProfileAssociation on ?instance
- ?role trust policy allows ec2.amazonaws.com; PassedToService includes ec2
emit:
  source_type: Identity
  target_type: Compute
  source: <principal>
  target: <EC2 instance>
  permissions:
  - iam:PassRole
  - ec2:ReplaceIamInstanceProfileAssociation
  conditions:
  - role_compatibility
  - iam_permission
  false_positive_note: Same PassedToService/trust gating as associate. Newly attached creds surface on
    the next IMDS credential refresh, not instantly.
  narrative: '{principal.name} can replace the instance profile on {instance.name} with role {role.name}
    (ec2:ReplaceIamInstanceProfileAssociation + iam:PassRole).'