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implement organisations change metric/alarm #734

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implement organisations change metric/alarm #734

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32 changes: 32 additions & 0 deletions security/cloudtrail.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,7 @@ Metadata:
- DisableNetworkGatewayChangeAlarm
- DisableRouteTableChangeAlarm
- DisableVpcChangeAlarm
- DisableOrganizationsChangeAlarm
- Label:
default: 'Permission Parameters'
Parameters:
Expand Down Expand Up @@ -143,6 +144,11 @@ Parameters:
Type: String
Default: 'false'
AllowedValues: ['true', 'false']
DisableOrganizationsChangeAlarm:
Description: 'Disable AVA-01, NET-02, NET-04 alarms (ISO 27001 2022/SOC 2).'
Type: String
Default: 'false'
AllowedValues: ['true', 'false']
S3DataEvents:
Description: 'Record data events of all S3 buckets? (Warning: additional charges apply.)'
Type: String
Expand Down Expand Up @@ -172,6 +178,7 @@ Conditions:
HasNetworkGatewayChangeAlarm: !And [!Equals [!Ref DisableNetworkGatewayChangeAlarm, 'false'], !Condition HasAlertTopic]
HasRouteTableChangeAlarm: !And [!Equals [!Ref DisableRouteTableChangeAlarm, 'false'], !Condition HasAlertTopic]
HasVpcChangeAlarm: !And [!Equals [!Ref DisableVpcChangeAlarm, 'false'], !Condition HasAlertTopic]
HasOrganizationsChangeAlarm: !And [!Equals [!Ref DisableOrganizationsChangeAlarm, 'false'], !Condition HasAlertTopic]
Resources:
TrailBucket:
Condition: InternalBucket
Expand Down Expand Up @@ -643,6 +650,31 @@ Resources:
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
TreatMissingData: notBreaching
OrganizationsChangeMetricFilter: # ISO 27001 2022; SOC 2 (AVA-01, NET-02, NET-04)
Condition: HasOrganizationsChangeAlarm
Type: 'AWS::Logs::MetricFilter'
Properties:
FilterPattern: '{($.eventSource = organizations.amazonaws.com) && (($.eventName = AcceptHandshake) || ($.eventName = AttachPolicy) || ($.eventName = CreateAccount) || ($.eventName = CreateOrganizationalUnit) || ($.eventName = CreatePolicy) || ($.eventName = DeclineHandshake) || ($.eventName = DeleteOrganization) || ($.eventName = DeleteOrganizationalUnit) || ($.eventName = DeletePolicy) || ($.eventName = DetachPolicy) || ($.eventName = DisablePolicyType) || ($.eventName = EnablePolicyType) || ($.eventName = InviteAccountToOrganization) || ($.eventName = LeaveOrganization) || ($.eventName = MoveAccount) || ($.eventName = RemoveAccountFromOrganization) || ($.eventName = UpdatePolicy) || ($.eventName = UpdateOrganizationalUnit))}'
LogGroupName: !Ref TrailLogGroup
MetricTransformations:
- MetricValue: '1'
MetricNamespace: !Ref 'AWS::StackName'
MetricName: 'OrganizationsChangeCount'
OrganizationsChangeAlarm:
Condition: HasOrganizationsChangeAlarm
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'CloudTrail: changes to Organizations detected'
Namespace: !Ref 'AWS::StackName'
MetricName: OrganizationsChangeCount
Statistic: Sum
Period: 300
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 0
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
TreatMissingData: notBreaching
Outputs:
TemplateID:
Description: 'cloudonaut.io template id.'
Expand Down
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