AWS Security Hub - Detect SSM documents public sharing enabled

Back


Id	0aa20f8c-b8e4-4a34-a5b8-8b2d9dd7d1c2
Rulename	AWS Security Hub - Detect SSM documents public sharing enabled
Description	This query detects AWS accounts where public sharing is enabled, using AWS Security Hub control SSM.7 findings. Allowing public sharing of SSM documents can expose automation content and enable unauthorized execution or tampering.
Severity	High
Tactics	Execution
Techniques	T1059
Required data connectors	AWSSecurityHub
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AWS Security Hub/Analytic Rules/SSMDocumentsPublicSharingEnabled.yaml
Version	1.0.0
Arm template	0aa20f8c-b8e4-4a34-a5b8-8b2d9dd7d1c2.json

KQL

AWSSecurityHubFindings
| where RecordState == "ACTIVE" and ComplianceStatus == "FAILED"
| where tostring(AwsSecurityFindingGeneratorId) == "security-control/SSM.7"
      or tostring(ComplianceSecurityControlId) == "SSM.7"
| summarize TimeGenerated = max(TimeGenerated)
    by AwsAccountId, AwsRegion, AwsSecurityFindingTitle, AwsSecurityFindingDescription,
       AwsSecurityFindingId, ComplianceSecurityControlId

YAML

version: 1.0.0
id: 0aa20f8c-b8e4-4a34-a5b8-8b2d9dd7d1c2
relevantTechniques:
- T1059
requiredDataConnectors:
- connectorId: AWSSecurityHub
  dataTypes:
  - AWSSecurityHubFindings
alertDetailsOverride:
  alertDescriptionFormat: AWS Account {{AwsAccountId}} has SSM documents with public sharing enabled. Disable public sharing setting to prevent unintended exposure of automation documents.
  alertDisplayNameFormat: AWS Account {{AwsAccountId}} SSM documents public sharing enabled
triggerOperator: gt
entityMappings:
- fieldMappings:
  - columnName: AwsAccountId
    identifier: Name
  - columnName: AwsAccountId
    identifier: CloudAppAccountId
  entityType: Account
name: AWS Security Hub - Detect SSM documents public sharing enabled
queryFrequency: 1h
query: |
  AWSSecurityHubFindings
  | where RecordState == "ACTIVE" and ComplianceStatus == "FAILED"
  | where tostring(AwsSecurityFindingGeneratorId) == "security-control/SSM.7"
        or tostring(ComplianceSecurityControlId) == "SSM.7"
  | summarize TimeGenerated = max(TimeGenerated)
      by AwsAccountId, AwsRegion, AwsSecurityFindingTitle, AwsSecurityFindingDescription,
         AwsSecurityFindingId, ComplianceSecurityControlId  
triggerThreshold: 0
customDetails:
  FindingId: AwsSecurityFindingId
  Region: AwsRegion
  ComplianceControlId: ComplianceSecurityControlId
description: |
  This query detects AWS accounts where public sharing is enabled, using AWS Security Hub control SSM.7 findings.
  Allowing public sharing of SSM documents can expose automation content and enable unauthorized execution or tampering.  
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AWS Security Hub/Analytic Rules/SSMDocumentsPublicSharingEnabled.yaml
queryPeriod: 1h
severity: High
kind: Scheduled
tactics:
- Execution
tags:
- AWS Foundational Security Best Practices v1.0.0

ARM