AmazonECSInfrastructureRolePolicyForManagedInstances

Last Modified

Sep 15, 2026

September 15, 2026 at 06:03 PM UTC

Version

v12

Total Versions

Created

Sep 15, 2026

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Risk

Medium

The same capabilities in a scoped form, resource policy writes, reads across all data, or full access to a whole service. Read from this policy document alone: trust policies, boundaries and SCPs in your account still decide what actually succeeds. How this is assessed

Medium
Can launch resources that run as a more privileged role
Grants the actions of 1 documented escalation path, but only on named resources or under a condition. Review that scope before trusting it.
- ec2-001iam:PassRole + ec2:RunInstancesscoped
  - iam:PassRole: condition iam:PassedToService, on arn:aws:iam::*:role/ecsInstanceRole*
Use with caution: Check which roles, users or policies fall inside the scope shown above. Within it the escalation works as documented, so keep privileged principals out of it.
Medium
Can take over existing resources that run as another role
Grants the actions of 2 documented escalation paths, but only on named resources or under a condition. Review that scope before trusting it.
- ec2-004ec2:CreateLaunchTemplateVersion + ec2:ModifyLaunchTemplatescoped
  - ec2:CreateLaunchTemplateVersion: condition ec2:ManagedResourceOperator, on arn:aws:ec2:*:*:launch-template/*
  - ec2:ModifyLaunchTemplate: condition ec2:ManagedResourceOperator, on arn:aws:ec2:*:*:launch-template/*
- ec2-005ec2:CreateLaunchTemplateVersion + ec2:ModifyLaunchTemplatescoped
  - ec2:CreateLaunchTemplateVersion: condition ec2:ManagedResourceOperator, on arn:aws:ec2:*:*:launch-template/*
  - ec2:ModifyLaunchTemplate: condition ec2:ManagedResourceOperator, on arn:aws:ec2:*:*:launch-template/*
Use with caution: Check which roles, users or policies fall inside the scope shown above. Within it the escalation works as documented, so keep privileged principals out of it.

Policy Document

View on GitHub

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209{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "CreateLaunchTemplateForManagedInstances",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateLaunchTemplate"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:launch-template/*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:RequestTag/AmazonECSManaged": "true"
            }
          }
        },
        {
          "Sid": "CreateLaunchTemplateVersionsForManagedInstances",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateLaunchTemplateVersion",
            "ec2:ModifyLaunchTemplate"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:launch-template/*"
          ],
          "Condition": {
            "StringEquals": {
              "ec2:ManagedResourceOperator": "ecs.amazonaws.com"
            }
          }
        },
        {
          "Sid": "ProvisionEC2InstancesForManagedInstances",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateFleet"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:fleet/*",
            "arn:aws:ec2:*:*:instance/*",
            "arn:aws:ec2:*:*:network-interface/*",
            "arn:aws:ec2:*:*:volume/*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:RequestTag/AmazonECSManaged": "true"
            }
          }
        },
        {
          "Sid": "CreateFleetForSupportingResources",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateFleet"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:subnet/*",
            "arn:aws:ec2:*:*:security-group/*",
            "arn:aws:ec2:*::image/*"
          ]
        },
        {
          "Sid": "CreateFleetForECSManagedLaunchTemplates",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateFleet"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:launch-template/*"
          ],
          "Condition": {
            "StringEquals": {
              "ec2:ResourceTag/AmazonECSManaged": "true"
            }
          }
        },
        {
          "Sid": "RunInstancesForManagedInstances",
          "Effect": "Allow",
          "Action": [
            "ec2:RunInstances"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:instance/*",
            "arn:aws:ec2:*:*:volume/*",
            "arn:aws:ec2:*:*:network-interface/*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:RequestTag/AmazonECSManaged": "true"
            }
          }
        },
        {
          "Sid": "RunInstancesForECSManagedLaunchTemplates",
          "Effect": "Allow",
          "Action": [
            "ec2:RunInstances"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:launch-template/*"
          ],
          "Condition": {
            "StringEquals": {
              "ec2:ResourceTag/AmazonECSManaged": "true"
            }
          }
        },
        {
          "Sid": "RunInstancesForSupportingResources",
          "Effect": "Allow",
          "Action": [
            "ec2:RunInstances"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:subnet/*",
            "arn:aws:ec2:*:*:security-group/*",
            "arn:aws:ec2:*::image/*",
            "arn:aws:resource-groups:*:*:group/*"
          ]
        },
        {
          "Sid": "TagOnCreateEC2ResourcesForManagedInstances",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateTags"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:fleet/*",
            "arn:aws:ec2:*:*:launch-template/*",
            "arn:aws:ec2:*:*:network-interface/*",
            "arn:aws:ec2:*:*:instance/*",
            "arn:aws:ec2:*:*:volume/*"
          ],
          "Condition": {
            "StringEquals": {
              "ec2:CreateAction": [
                "CreateFleet",
                "CreateLaunchTemplate",
                "RunInstances"
              ]
            }
          }
        },
        {
          "Sid": "PassInstanceRoleForManagedInstances",
          "Effect": "Allow",
          "Action": [
            "iam:PassRole"
          ],
          "Resource": [
            "arn:aws:iam::*:role/ecsInstanceRole*"
          ],
          "Condition": {
            "StringLike": {
              "iam:PassedToService": "ec2.*"
            }
          }
        },
        {
          "Sid": "CreateServiceLinkedRoleForEC2Spot",
          "Effect": "Allow",
          "Action": [
            "iam:CreateServiceLinkedRole"
          ],
          "Resource": [
            "arn:aws:iam::*:role/aws-service-role/spot.amazonaws.com/AWSServiceRoleForEC2Spot"
          ]
        },
        {
          "Sid": "DescribeEC2ResourcesManagedByECS",
          "Effect": "Allow",
          "Action": [
            "ec2:DescribeInstances",
            "ec2:DescribeInstanceTypes",
            "ec2:DescribeLaunchTemplates",
            "ec2:DescribeNetworkInterfaces",
            "ec2:DescribeInstanceTypeOfferings",
            "ec2:DescribeAvailabilityZones",
            "ec2:DescribeSecurityGroups",
            "ec2:DescribeSubnets",
            "ec2:DescribeVpcs",
            "ec2:DescribeCapacityReservations"
          ],
          "Resource": "*"
        },
        {
          "Sid": "ListResourceGroupResources",
          "Effect": "Allow",
          "Action": [
            "resource-groups:ListGroupResources",
            "cloudformation:DescribeStacks",
            "cloudformation:ListStackResources",
            "tag:GetResources"
          ],
          "Resource": "*"
        }
      ]
    },
    "VersionId": "v12",
    "IsDefaultVersion": true,
    "CreateDate": "2026-09-15T17:57:08+00:00"
  }
}

Version History (9 recorded)

Raw history

v12updated

scope changed, no action added or removed

Sep 15, 2026

4197142

AmazonECSInfrastructureRolePolicyForManagedInstances - Policy Version v11