AWSTransformInfrastructureExecutorAccessEC2

Last Modified

Sep 2, 2026

September 2, 2026 at 10:03 PM UTC

Version

v3

Total Versions

3

Created

Sep 2, 2026

Actions

51

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 launch resources that run as a more privileged role

    Grants the actions of 1 documented escalation path, but only on named resources or under a condition. Review that scope before trusting it.

    • scheduler-001iam:PassRole + scheduler:CreateSchedulescoped
      • iam:PassRole: condition aws:ResourceAccount, iam:PassedToService, on arn:aws:iam::*:role/atx-transform-role, arn:aws:iam::*:role/atx-transform-role-*
      • scheduler:CreateSchedule: condition aws:ResourceAccount, on arn:aws:scheduler:*:*:schedule/atx-ct/*, arn:aws:scheduler:*:*:schedule/atx-ct-*/*

    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.

  • Medium

    Can take over existing resources that run as another role

    Grants the actions of 2 documented escalation paths, but only on named resources or under a condition. Review that scope before trusting it.

    • ssm-001ssm:StartSessionscoped
      • ssm:StartSession: condition ssm:resourceTag/atx-remote-infra, on arn:aws:ec2:*:*:instance/*
    • ssm-002ssm:SendCommandscoped
      • ssm:SendCommand: condition ssm:resourceTag/atx-remote-infra, on arn:aws:ec2:*:*:instance/*

    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 (2)

  • Suggestion / REDUNDANT_RESOURCE

    The 2 resource ARN(s) are redundant because they reference the same resource. Review the use of wildcards (*), or remove the resource arn:aws:s3:::atx-source-code-*/* to remove the redundancy. AWS docs

  • Suggestion / REDUNDANT_RESOURCE

    The 2 resource ARN(s) are redundant because they reference the same resource. Review the use of wildcards (*), or remove the resource arn:aws:s3:::atx-ct-output-*/* to remove the redundancy. AWS docs

Policy Document

View on GitHub
{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "CFNRead",
          "Effect": "Allow",
          "Action": [
            "cloudformation:DescribeStacks",
            "cloudformation:DescribeStackEvents",
            "cloudformation:DescribeStackResources",
            "cloudformation:DescribeStackDriftDetectionStatus"
          ],
          "Resource": [
            "arn:aws:cloudformation:*:*:stack/atx-*/*",
            "arn:aws:cloudformation:*:*:stack/AtxSecurityAgentStack-*/*",
            "arn:aws:cloudformation:*:*:stack/AtxDispatcherStack/*"
          ]
        },
        {
          "Sid": "CFNValidateTemplate",
          "Effect": "Allow",
          "Action": "cloudformation:ValidateTemplate",
          "Resource": "*"
        },
        {
          "Sid": "EC2Desc",
          "Effect": "Allow",
          "Action": [
            "ec2:DescribeInstances",
            "ec2:DescribeImages",
            "ec2:DescribeVpcs",
            "ec2:DescribeSubnets",
            "ec2:DescribeSecurityGroups",
            "ec2:DescribeKeyPairs",
            "ec2:DescribeRouteTables",
            "ec2:DescribeNatGateways",
            "ec2:DescribeInternetGateways"
          ],
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "EC2PowerState",
          "Effect": "Allow",
          "Action": [
            "ec2:StartInstances",
            "ec2:StopInstances"
          ],
          "Resource": "arn:aws:ec2:*:*:instance/*",
          "Condition": {
            "StringEquals": {
              "ec2:ResourceTag/atx-remote-infra": "true"
            }
          }
        },
        {
          "Sid": "SSMRead",
          "Effect": "Allow",
          "Action": [
            "ssm:GetCommandInvocation",
            "ssm:ListCommands",
            "ssm:ListCommandInvocations",
            "ssm:DescribeInstanceInformation",
            "ssm:DescribeSessions"
          ],
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "SSMTgt",
          "Effect": "Allow",
          "Action": [
            "ssm:SendCommand",
            "ssm:StartSession"
          ],
          "Resource": "arn:aws:ec2:*:*:instance/*",
          "Condition": {
            "StringEquals": {
              "ssm:resourceTag/atx-remote-infra": "true"
            }
          }
        },
        {
          "Sid": "SSMDocs",
          "Effect": "Allow",
          "Action": "ssm:SendCommand",
          "Resource": "arn:aws:ssm:*::document/AWS-RunShellScript"
        },
        {
          "Sid": "S3Data",
          "Effect": "Allow",
          "Action": [
            "s3:GetObject",
            "s3:PutObject",
            "s3:DeleteObject",
            "s3:ListBucket"
          ],
          "Resource": [
            "arn:aws:s3:::atx-source-code-*",
            "arn:aws:s3:::atx-source-code-*/*",
            "arn:aws:s3:::atx-ct-output-*",
            "arn:aws:s3:::atx-ct-output-*/*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "KMSEncryptDecrypt",
          "Effect": "Allow",
          "Action": [
            "kms:Encrypt",
            "kms:Decrypt",
            "kms:GenerateDataKey"
          ],
          "Resource": "arn:aws:kms:*:*:key/*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            },
            "ForAnyValue:StringLike": {
              "kms:ResourceAliases": [
                "alias/atx-encryption-key",
                "alias/atx-encryption-key-*"
              ]
            }
          }
        },
        {
          "Sid": "SM",
          "Effect": "Allow",
          "Action": [
            "secretsmanager:GetSecretValue",
            "secretsmanager:DescribeSecret"
          ],
          "Resource": "arn:aws:secretsmanager:*:*:secret:atx/*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "SMList",
          "Effect": "Allow",
          "Action": "secretsmanager:ListSecrets",
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "SchedLifecycle",
          "Effect": "Allow",
          "Action": [
            "scheduler:CreateSchedule",
            "scheduler:DeleteSchedule",
            "scheduler:GetSchedule",
            "scheduler:UpdateSchedule"
          ],
          "Resource": [
            "arn:aws:scheduler:*:*:schedule/atx-ct/*",
            "arn:aws:scheduler:*:*:schedule/atx-ct-*/*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "SchedGroupRead",
          "Effect": "Allow",
          "Action": "scheduler:GetScheduleGroup",
          "Resource": [
            "arn:aws:scheduler:*:*:schedule-group/atx-ct",
            "arn:aws:scheduler:*:*:schedule-group/atx-ct-*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "SchedList",
          "Effect": "Allow",
          "Action": [
            "scheduler:ListSchedules",
            "scheduler:ListScheduleGroups"
          ],
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "IAMPassEC2InstanceRole",
          "Effect": "Allow",
          "Action": "iam:PassRole",
          "Resource": [
            "arn:aws:iam::*:role/atx-transform-role",
            "arn:aws:iam::*:role/atx-transform-role-*"
          ],
          "Condition": {
            "StringEquals": {
              "iam:PassedToService": "ec2.amazonaws.com",
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "IAMPassSchedulerRole",
          "Effect": "Allow",
          "Action": "iam:PassRole",
          "Resource": [
            "arn:aws:iam::*:role/AtxSchedulerInvocationRole",
            "arn:aws:iam::*:role/AtxSchedulerInvocationRole-*"
          ],
          "Condition": {
            "StringEquals": {
              "iam:PassedToService": "scheduler.amazonaws.com",
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "IAMReadRoles",
          "Effect": "Allow",
          "Action": [
            "iam:GetRole",
            "iam:ListAttachedRolePolicies",
            "iam:ListRolePolicies",
            "iam:GetRolePolicy"
          ],
          "Resource": [
            "arn:aws:iam::*:role/atx-*",
            "arn:aws:iam::*:role/Atx*",
            "arn:aws:iam::*:role/ATX*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "IAMReadInstanceProfile",
          "Effect": "Allow",
          "Action": "iam:GetInstanceProfile",
          "Resource": [
            "arn:aws:iam::*:instance-profile/atx-*",
            "arn:aws:iam::*:instance-profile/Atx*",
            "arn:aws:iam::*:instance-profile/ATX*"
          ],
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "TagGetATXStacks",
          "Effect": "Allow",
          "Action": "tag:GetResources",
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "CFNListStacksForDetect",
          "Effect": "Allow",
          "Action": "cloudformation:ListStacks",
          "Resource": "*",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        },
        {
          "Sid": "SQSEnqueueToDispatcher",
          "Effect": "Allow",
          "Action": "sqs:SendMessage",
          "Resource": "arn:aws:sqs:*:*:atx-dispatcher-queue",
          "Condition": {
            "StringEquals": {
              "aws:ResourceAccount": "${aws:PrincipalAccount}"
            }
          }
        }
      ]
    },
    "VersionId": "v3",
    "IsDefaultVersion": true,
    "CreateDate": "2026-09-02T21:27:07+00:00"
  }
}

Version History (3 recorded)

Raw history
v3updated

1 action added

cda9eef
v2updated

scope changed, no action added or removed

df1136e
v1new policy

48 actions added

b82a312
Permissions management: iam:PassRole: iam:PassRole