AWSElasticDisasterRecoveryEc2InstancePolicy

Last Modified

Mar 12, 2026

March 12, 2026 at 09:26 PM UTC

Version

Total Versions

Created

Nov 27, 2023

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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:RequestTag/SourceInstanceARN, sts:TransitiveTagKeys, on arn:aws:iam::*:role/service-role/DRSCrossAccountAgentAuthorizedRole_*
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.

Policy Document

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86{
  "PolicyVersion": {
    "Document": {
      "Version": "2012-10-17",
      "Statement": [
        {
          "Sid": "DRSEc2InstancePolicy1",
          "Effect": "Allow",
          "Action": [
            "drs:GetAgentInstallationAssetsForDrs",
            "drs:SendClientLogsForDrs",
            "drs:SendClientMetricsForDrs",
            "drs:CreateSourceServerForDrs",
            "drs:CreateSourceNetwork"
          ],
          "Resource": "*"
        },
        {
          "Sid": "DRSEc2InstancePolicy2",
          "Effect": "Allow",
          "Action": [
            "drs:TagResource"
          ],
          "Resource": "arn:aws:drs:*:*:source-server/*",
          "Condition": {
            "StringEquals": {
              "drs:CreateAction": "CreateSourceServerForDrs"
            }
          }
        },
        {
          "Sid": "DRSEc2InstancePolicy3",
          "Effect": "Allow",
          "Action": [
            "drs:TagResource"
          ],
          "Resource": "arn:aws:drs:*:*:source-network/*",
          "Condition": {
            "StringEquals": {
              "drs:CreateAction": "CreateSourceNetwork"
            }
          }
        },
        {
          "Sid": "DRSEc2InstancePolicy4",
          "Effect": "Allow",
          "Action": [
            "drs:SendAgentMetricsForDrs",
            "drs:SendAgentLogsForDrs",
            "drs:UpdateAgentSourcePropertiesForDrs",
            "drs:UpdateAgentReplicationInfoForDrs",
            "drs:UpdateAgentConversionInfoForDrs",
            "drs:GetAgentCommandForDrs",
            "drs:GetAgentConfirmedResumeInfoForDrs",
            "drs:GetAgentRuntimeConfigurationForDrs",
            "drs:UpdateAgentBacklogForDrs",
            "drs:GetAgentReplicationInfoForDrs"
          ],
          "Resource": "arn:aws:drs:*:*:source-server/*"
        },
        {
          "Sid": "DRSEc2InstancePolicy5",
          "Effect": "Allow",
          "Action": [
            "sts:AssumeRole",
            "sts:TagSession"
          ],
          "Resource": [
            "arn:aws:iam::*:role/service-role/DRSCrossAccountAgentAuthorizedRole_*"
          ],
          "Condition": {
            "StringLike": {
              "aws:RequestTag/SourceInstanceARN": "${ec2:SourceInstanceARN}"
            },
            "ForAnyValue:StringEquals": {
              "sts:TransitiveTagKeys": "SourceInstanceARN"
            }
          }
        }
      ]
    },
    "VersionId": "v5",
    "IsDefaultVersion": true,
    "CreateDate": "2023-11-27T13:39:44+00:00"
  }
}