AutoScalingServiceRolePolicy

Last Modified

Mar 12, 2026

March 12, 2026 at 09:28 PM UTC

Version

v10

Total Versions

Created

Nov 12, 2025

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Risk

High

An unrestricted escalation path, identity administration, secret reads or the power to switch off security monitoring. Read from this policy document alone: trust policies, boundaries and SCPs in your account still decide what actually succeeds. How this is assessed

High
Can take over existing resources that run as another role
Grants every action of 1 documented escalation path on any resource with no condition.
- ec2-002ec2:ModifyInstanceAttribute + ec2:StopInstances + ec2:StartInstancesunrestricted
Use with caution: List the roles attached to the functions, instances, pipelines or notebooks it can modify: the holder effectively has them too.
High
Can read secrets
Reads Parameter Store values, SecureString included where the KMS key allows it, on any resource with no condition.
ssm:GetParameters
Use with caution: Where the holder needs only some secrets, write your own policy scoped to their ARNs or tags, and limit decryption in the KMS key policies.
Medium
Can launch resources that run as a more privileged role
Grants the actions of 2 documented escalation paths, but only on named resources or under a condition. Review that scope before trusting it.
- ec2-001iam:PassRole + ec2:RunInstancesscoped
  - iam:PassRole: condition iam:PassedToService
- ec2-003iam:PassRole + ec2:RequestSpotInstancesscoped
  - iam:PassRole: condition iam:PassedToService
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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134{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "EC2InstanceManagement",
          "Effect": "Allow",
          "Action": [
            "ec2:AttachClassicLinkVpc",
            "ec2:CancelSpotInstanceRequests",
            "ec2:CreateReplaceRootVolumeTask",
            "ec2:CreateFleet",
            "ec2:CreateTags",
            "ec2:DeleteTags",
            "ec2:Describe*",
            "ec2:DetachClassicLinkVpc",
            "ec2:GetInstanceTypesFromInstanceRequirements",
            "ec2:GetSecurityGroupsForVpc",
            "ec2:ModifyInstanceAttribute",
            "ec2:RequestSpotInstances",
            "ec2:RunInstances",
            "ec2:StartInstances",
            "ec2:StopInstances",
            "ec2:TerminateInstances"
          ],
          "Resource": "*"
        },
        {
          "Sid": "EC2InstanceProfileManagement",
          "Effect": "Allow",
          "Action": [
            "iam:PassRole"
          ],
          "Resource": "*",
          "Condition": {
            "StringLike": {
              "iam:PassedToService": "ec2.amazonaws.com*"
            }
          }
        },
        {
          "Sid": "EC2SpotManagement",
          "Effect": "Allow",
          "Action": [
            "iam:CreateServiceLinkedRole"
          ],
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "iam:AWSServiceName": "spot.amazonaws.com"
            }
          }
        },
        {
          "Sid": "ELBManagement",
          "Effect": "Allow",
          "Action": [
            "elasticloadbalancing:Register*",
            "elasticloadbalancing:Deregister*",
            "elasticloadbalancing:Describe*"
          ],
          "Resource": "*"
        },
        {
          "Sid": "CWManagement",
          "Effect": "Allow",
          "Action": [
            "cloudwatch:DeleteAlarms",
            "cloudwatch:DescribeAlarms",
            "cloudwatch:GetMetricData",
            "cloudwatch:PutMetricAlarm"
          ],
          "Resource": "*"
        },
        {
          "Sid": "SNSManagement",
          "Effect": "Allow",
          "Action": [
            "sns:Publish"
          ],
          "Resource": "*"
        },
        {
          "Sid": "EventBridgeRuleManagement",
          "Effect": "Allow",
          "Action": [
            "events:PutRule",
            "events:PutTargets",
            "events:RemoveTargets",
            "events:DeleteRule"
          ],
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "events:ManagedBy": "autoscaling.amazonaws.com"
            }
          }
        },
        {
          "Sid": "SystemsManagerParameterManagement",
          "Effect": "Allow",
          "Action": [
            "ssm:GetParameters"
          ],
          "Resource": "*"
        },
        {
          "Sid": "VpcLatticeManagement",
          "Effect": "Allow",
          "Action": [
            "vpc-lattice:DeregisterTargets",
            "vpc-lattice:GetTargetGroup",
            "vpc-lattice:ListTargets",
            "vpc-lattice:ListTargetGroups",
            "vpc-lattice:RegisterTargets"
          ],
          "Resource": "*"
        },
        {
          "Sid": "ResourceGroupsManagement",
          "Effect": "Allow",
          "Action": [
            "resource-groups:ListGroupResources"
          ],
          "Resource": "arn:*:resource-groups:*:*:group/*"
        }
      ]
    },
    "VersionId": "v10",
    "IsDefaultVersion": true,
    "CreateDate": "2025-11-12T18:19:06+00:00"
  }
}

Version History (17 recorded)

Raw history

v10updated

scope changed, no action added or removed

Mar 12, 2026

2a96dbc

AutoScalingServiceRolePolicy - Policy Version v10