AWS-SSM-DiagnosisAutomation-AdministrationRolePolicy

Last Modified

Aug 31, 2026

August 31, 2026 at 12:03 AM UTC

Version

Total Versions

Created

Aug 29, 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 take over other users or roles
Grants the actions of 1 documented escalation path, but only on named resources or under a condition. Review that scope before trusting it.
- sts-001sts:AssumeRolescoped
  - sts:AssumeRole: condition aws:ResourceAccount, on arn:aws:iam::*:role/AWS-SSM-DiagnosisExecutionRole*
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.

IAM Access Analyzer (1)

Warning / TYPE_MISMATCH
Use the operator type String instead of operator ARN for the condition key kms:EncryptionContext:aws:s3:arn. AWS docs

Policy Document

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109{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "AllowReadOnlyAccessSSMResource",
          "Effect": "Allow",
          "Action": [
            "ssm:DescribeAutomationExecutions",
            "ssm:DescribeAutomationStepExecutions",
            "ssm:GetAutomationExecution"
          ],
          "Resource": "*"
        },
        {
          "Sid": "AllowExecuteSSMAutomation",
          "Effect": "Allow",
          "Action": [
            "ssm:StartAutomationExecution"
          ],
          "Resource": [
            "arn:aws:ssm:*:*:document/AWS-*UnmanagedEC2*",
            "arn:aws:ssm:*:*:document/AWS-DiagnoseHybridActivationIssues",
            "arn:aws:ssm:*:*:automation-execution/*",
            "arn:aws:ssm:*:*:automation-definition/AWS-*UnmanagedEC2*:*",
            "arn:aws:ssm:*:*:automation-definition/AWS-DiagnoseHybridActivationIssues:*"
          ]
        },
        {
          "Sid": "AllowKMSOperations",
          "Effect": "Allow",
          "Action": [
            "kms:Decrypt",
            "kms:GenerateDataKey"
          ],
          "Resource": "arn:aws:kms:*:*:key/*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceTag/SystemsManagerManaged": "true"
            },
            "ArnLike": {
              "kms:EncryptionContext:aws:s3:arn": "arn:aws:s3:::do-not-delete-ssm-diagnosis-*"
            },
            "StringLike": {
              "kms:ViaService": "s3.*.amazonaws.com"
            },
            "Bool": {
              "aws:ViaAWSService": "true"
            }
          }
        },
        {
          "Sid": "AllowAssumeDiagnosisExecutionRoleWithinAccount",
          "Effect": "Allow",
          "Action": "sts:AssumeRole",
          "Resource": "arn:aws:iam::*:role/AWS-SSM-DiagnosisExecutionRole*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "AllowPassRoleOnSelfToSsm",
          "Effect": "Allow",
          "Action": "iam:PassRole",
          "Resource": "arn:aws:iam::*:role/AWS-SSM-DiagnosisAdminRole*",
          "Condition": {
            "StringEquals": {
              "iam:PassedToService": "ssm.amazonaws.com"
            }
          }
        },
        {
          "Sid": "AllowReadWriteToSsmDiagnosisBucketInSameAccount",
          "Effect": "Allow",
          "Action": [
            "s3:PutObject",
            "s3:GetObject",
            "s3:DeleteObject"
          ],
          "Resource": "arn:aws:s3:::do-not-delete-ssm-diagnosis-*/actions/*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "AllowListBucketOnSsmDiagnosisBucketInSameAccount",
          "Effect": "Allow",
          "Action": [
            "s3:ListBucket"
          ],
          "Resource": "arn:aws:s3:::do-not-delete-ssm-diagnosis-*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        }
      ]
    },
    "VersionId": "v5",
    "IsDefaultVersion": true,
    "CreateDate": "2026-08-29T00:47:07+00:00"
  }
}