AmazonElasticFileSystemFullAccess

Last Modified

Mar 12, 2026

March 12, 2026 at 09:27 PM UTC

Version

v10

Total Versions

Created

Nov 7, 2024

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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 2 permissions management actions across 1 service (elasticfilesystem) on any resource, enough to share resources outside the account.
elasticfilesystem:deletefilesystempolicyelasticfilesystem:putfilesystempolicy
Use with caution: Turn on IAM Access Analyzer external access findings, and keep account-level guards like S3 Block Public Access enabled.

Policy Document

View on GitHub

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92{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "ElasticFileSystemFullAccess",
          "Effect": "Allow",
          "Action": [
            "cloudwatch:DescribeAlarmsForMetric",
            "cloudwatch:GetMetricData",
            "ec2:CreateNetworkInterface",
            "ec2:DeleteNetworkInterface",
            "ec2:DescribeAvailabilityZones",
            "ec2:DescribeNetworkInterfaceAttribute",
            "ec2:DescribeNetworkInterfaces",
            "ec2:DescribeSecurityGroups",
            "ec2:DescribeSubnets",
            "ec2:DescribeVpcAttribute",
            "ec2:DescribeVpcs",
            "ec2:ModifyNetworkInterfaceAttribute",
            "elasticfilesystem:CreateFileSystem",
            "elasticfilesystem:CreateMountTarget",
            "elasticfilesystem:CreateTags",
            "elasticfilesystem:CreateAccessPoint",
            "elasticfilesystem:CreateReplicationConfiguration",
            "elasticfilesystem:DeleteFileSystem",
            "elasticfilesystem:DeleteMountTarget",
            "elasticfilesystem:DeleteTags",
            "elasticfilesystem:DeleteAccessPoint",
            "elasticfilesystem:DeleteFileSystemPolicy",
            "elasticfilesystem:DeleteReplicationConfiguration",
            "elasticfilesystem:DescribeAccountPreferences",
            "elasticfilesystem:DescribeBackupPolicy",
            "elasticfilesystem:DescribeFileSystems",
            "elasticfilesystem:DescribeFileSystemPolicy",
            "elasticfilesystem:DescribeLifecycleConfiguration",
            "elasticfilesystem:DescribeMountTargets",
            "elasticfilesystem:DescribeMountTargetSecurityGroups",
            "elasticfilesystem:DescribeTags",
            "elasticfilesystem:DescribeAccessPoints",
            "elasticfilesystem:DescribeReplicationConfigurations",
            "elasticfilesystem:ModifyMountTargetSecurityGroups",
            "elasticfilesystem:PutAccountPreferences",
            "elasticfilesystem:PutBackupPolicy",
            "elasticfilesystem:PutLifecycleConfiguration",
            "elasticfilesystem:PutFileSystemPolicy",
            "elasticfilesystem:UpdateFileSystem",
            "elasticfilesystem:UpdateFileSystemProtection",
            "elasticfilesystem:TagResource",
            "elasticfilesystem:UntagResource",
            "elasticfilesystem:ListTagsForResource",
            "elasticfilesystem:Backup",
            "elasticfilesystem:Restore",
            "elasticfilesystem:ReplicationRead",
            "elasticfilesystem:ReplicationWrite",
            "kms:DescribeKey",
            "kms:ListAliases"
          ],
          "Resource": "*"
        },
        {
          "Sid": "CreateServiceLinkedRoleForEFS",
          "Effect": "Allow",
          "Action": "iam:CreateServiceLinkedRole",
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "iam:AWSServiceName": [
                "elasticfilesystem.amazonaws.com"
              ]
            }
          }
        },
        {
          "Sid": "IAMPassRoleAccessForEFS",
          "Effect": "Allow",
          "Action": "iam:PassRole",
          "Resource": "arn:aws:iam::*:role/*",
          "Condition": {
            "StringLike": {
              "iam:PassedToService": "elasticfilesystem.amazonaws.com"
            }
          }
        }
      ]
    },
    "VersionId": "v10",
    "IsDefaultVersion": true,
    "CreateDate": "2024-11-07T19:34:20+00:00"
  }
}