AWSBackupAdminPolicy

Last Modified

Sep 16, 2019

September 16, 2019 at 03:19 PM UTC

Version

Total Versions

Created

Mar 11, 2019

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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 read secrets
Reads data encrypted with any KMS key whose key policy allows it, on any resource with no condition.
kms:Decrypt
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 rewrite resource policies and sharing
Grants 5 permissions management actions across 2 services (backup, kms) on any resource, enough to share resources outside the account.
backup:deletebackupvaultaccesspolicybackup:deletebackupvaultsharingpolicybackup:putbackupvaultaccesspolicybackup:putbackupvaultsharingpolicykms:creategrant
Use with caution: Turn on IAM Access Analyzer external access findings, and keep account-level guards like S3 Block Public Access enabled.
Medium
Full access to 2 services on every resource
Uses backup:*, backup-storage:* with Resource "*" and no condition, so every action AWS adds to those services later is granted too.
backup:*backup-storage:*
Use with caution: The grant grows every time the service does. For long-lived access, prefer a policy that lists the actions you actually need.

Policy Document

View on GitHub

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128{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Effect": "Allow",
          "Action": "backup:*",
          "Resource": "*"
        },
        {
          "Effect": "Allow",
          "Action": "backup-storage:*",
          "Resource": "*"
        },
        {
          "Action": [
            "rds:DescribeDBSnapshots",
            "rds:ListTagsForResource",
            "rds:DescribeDBInstances",
            "rds:describeDBSnapshots",
            "rds:describeDBEngineVersions",
            "rds:describeOptionGroups",
            "rds:describeOrderableDBInstanceOptions",
            "rds:describeDBSubnetGroups"
          ],
          "Effect": "Allow",
          "Resource": "*"
        },
        {
          "Action": [
            "dynamodb:ListBackups",
            "dynamodb:ListTables"
          ],
          "Effect": "Allow",
          "Resource": "*"
        },
        {
          "Action": [
            "elasticfilesystem:DescribeFilesystems"
          ],
          "Resource": "arn:aws:elasticfilesystem:*:*:file-system/*",
          "Effect": "Allow"
        },
        {
          "Action": [
            "ec2:DescribeSnapshots",
            "ec2:DescribeVolumes",
            "ec2:describeAvailabilityZones"
          ],
          "Effect": "Allow",
          "Resource": "*"
        },
        {
          "Action": [
            "tag:GetTagKeys",
            "tag:GetTagValues",
            "tag:GetResources"
          ],
          "Effect": "Allow",
          "Resource": "*"
        },
        {
          "Effect": "Allow",
          "Action": [
            "storagegateway:DescribeCachediSCSIVolumes",
            "storagegateway:DescribeStorediSCSIVolumes"
          ],
          "Resource": "arn:aws:storagegateway:*:*:gateway/*/volume/*"
        },
        {
          "Effect": "Allow",
          "Action": [
            "storagegateway:ListGateways"
          ],
          "Resource": "arn:aws:storagegateway:*:*:*"
        },
        {
          "Effect": "Allow",
          "Action": [
            "storagegateway:DescribeGatewayInformation",
            "storagegateway:ListVolumes",
            "storagegateway:ListLocalDisks"
          ],
          "Resource": "arn:aws:storagegateway:*:*:gateway/*"
        },
        {
          "Action": [
            "iam:ListRoles",
            "iam:GetRole",
            "iam:GetUser"
          ],
          "Effect": "Allow",
          "Resource": "*"
        },
        {
          "Effect": "Allow",
          "Action": "iam:PassRole",
          "Resource": [
            "arn:aws:iam::*:role/*AwsBackup*",
            "arn:aws:iam::*:role/*AWSBackup*"
          ],
          "Condition": {
            "StringLike": {
              "iam:PassedToService": "backup.amazonaws.com"
            }
          }
        },
        {
          "Action": [
            "kms:ListKeys",
            "kms:DescribeKey",
            "kms:GenerateDataKey",
            "kms:RetireGrant",
            "kms:CreateGrant",
            "kms:ListAliases",
            "kms:Decrypt"
          ],
          "Effect": "Allow",
          "Resource": "*"
        }
      ]
    },
    "VersionId": "v2",
    "IsDefaultVersion": true,
    "CreateDate": "2019-03-11T22:14:30Z"
  }
}