AmazonFSxServiceRolePolicy

Last Modified

Mar 12, 2026

March 12, 2026 at 09:27 PM UTC

Version

Total Versions

Created

Jul 22, 2025

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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 rewrite resource policies and sharing
Grants 1 permissions management action across 1 service (ec2) on any resource, enough to share resources outside the account.
ec2:createnetworkinterfacepermission
Use with caution: Turn on IAM Access Analyzer external access findings, and keep account-level guards like S3 Block Public Access enabled.

Policy Document

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124{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "CreateFileSystem",
          "Effect": "Allow",
          "Action": [
            "ds:AuthorizeApplication",
            "ds:GetAuthorizedApplicationDetails",
            "ds:UnauthorizeApplication",
            "ec2:CreateNetworkInterface",
            "ec2:CreateNetworkInterfacePermission",
            "ec2:DeleteNetworkInterface",
            "ec2:DescribeAddresses",
            "ec2:DescribeDhcpOptions",
            "ec2:DescribeNetworkInterfaces",
            "ec2:DescribeRouteTables",
            "ec2:DescribeSecurityGroups",
            "ec2:DescribeSubnets",
            "ec2:DescribeVpcs",
            "ec2:DisassociateAddress",
            "ec2:GetSecurityGroupsForVpc",
            "route53:AssociateVPCWithHostedZone"
          ],
          "Resource": "*"
        },
        {
          "Sid": "PutMetrics",
          "Effect": "Allow",
          "Action": [
            "cloudwatch:PutMetricData"
          ],
          "Resource": [
            "*"
          ],
          "Condition": {
            "StringEquals": {
              "cloudwatch:namespace": "AWS/FSx"
            }
          }
        },
        {
          "Sid": "TagResourceNetworkInterface",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateTags"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:network-interface/*"
          ],
          "Condition": {
            "StringEquals": {
              "ec2:CreateAction": "CreateNetworkInterface"
            },
            "ForAllValues:StringEquals": {
              "aws:TagKeys": "AmazonFSx.FileSystemId"
            }
          }
        },
        {
          "Sid": "ManageNetworkInterface",
          "Effect": "Allow",
          "Action": [
            "ec2:AssignIpv6Addresses",
            "ec2:AssignPrivateIpAddresses",
            "ec2:ModifyNetworkInterfaceAttribute",
            "ec2:UnassignIpv6Addresses",
            "ec2:UnassignPrivateIpAddresses"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:network-interface/*"
          ],
          "Condition": {
            "Null": {
              "aws:ResourceTag/AmazonFSx.FileSystemId": "false"
            }
          }
        },
        {
          "Sid": "ManageRouteTable",
          "Effect": "Allow",
          "Action": [
            "ec2:CreateRoute",
            "ec2:ReplaceRoute",
            "ec2:DeleteRoute"
          ],
          "Resource": [
            "arn:aws:ec2:*:*:route-table/*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:ResourceTag/AmazonFSx": "ManagedByAmazonFSx"
            }
          }
        },
        {
          "Sid": "PutCloudWatchLogs",
          "Effect": "Allow",
          "Action": [
            "logs:DescribeLogGroups",
            "logs:DescribeLogStreams",
            "logs:PutLogEvents"
          ],
          "Resource": "arn:aws:logs:*:*:log-group:/aws/fsx/*"
        },
        {
          "Sid": "ManageAuditLogs",
          "Effect": "Allow",
          "Action": [
            "firehose:DescribeDeliveryStream",
            "firehose:PutRecord",
            "firehose:PutRecordBatch"
          ],
          "Resource": "arn:aws:firehose:*:*:deliverystream/aws-fsx-*"
        }
      ]
    },
    "VersionId": "v8",
    "IsDefaultVersion": true,
    "CreateDate": "2025-07-22T18:07:07+00:00"
  }
}