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Sigma rules for CVE-2020-27978

2 rules · scoped to cve · back to CVE-2020-27978
Direct rules mention this entity in their title or description. Related rules cover the techniques this entity is known to use.

Detection rules

2 of 2
direct high
AWS Identity Center Identity Provider Change
Detects a change in the AWS Identity Center (FKA AWS SSO) identity provider. A change in identity provider allows an attacker to establish persistent access or escalate privileges via user impersonation.
status test author Michael McIntyre @wtfender id d3adb3ef-b7e7-4003-9092-1924c797db35 license Sigma · DRL-1.1
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title: AWS Identity Center Identity Provider Change
id: d3adb3ef-b7e7-4003-9092-1924c797db35
status: test
description: |
    Detects a change in the AWS Identity Center (FKA AWS SSO) identity provider.
    A change in identity provider allows an attacker to establish persistent access or escalate privileges via user impersonation.
references:
    - https://docs.aws.amazon.com/singlesignon/latest/userguide/app-enablement.html
    - https://docs.aws.amazon.com/singlesignon/latest/userguide/sso-info-in-cloudtrail.html
    - https://docs.aws.amazon.com/service-authorization/latest/reference/list_awsiamidentitycentersuccessortoawssinglesign-on.html
author: Michael McIntyre @wtfender
date: 2023-09-27
tags:
    - attack.persistence
    - attack.credential-access
    - attack.defense-impairment
    - attack.t1556
logsource:
    product: aws
    service: cloudtrail
detection:
    selection:
        eventSource:
            - 'sso-directory.amazonaws.com'
            - 'sso.amazonaws.com'
        eventName:
            - 'AssociateDirectory'
            - 'DisableExternalIdPConfigurationForDirectory'
            - 'DisassociateDirectory'
            - 'EnableExternalIdPConfigurationForDirectory'
    condition: selection
falsepositives:
    - Authorized changes to the AWS account's identity provider
level: high
direct medium
Okta Identity Provider Created
Detects when a new identity provider is created for Okta.
status test author kelnage id 969c7590-8c19-4797-8c1b-23155de6e7ac license Sigma · DRL-1.1
view Sigma YAML
title: Okta Identity Provider Created
id: 969c7590-8c19-4797-8c1b-23155de6e7ac
status: test
description: Detects when a new identity provider is created for Okta.
references:
    - https://developer.okta.com/docs/reference/api/system-log/
    - https://sec.okta.com/articles/2023/08/cross-tenant-impersonation-prevention-and-detection
author: kelnage
date: 2023-09-07
modified: 2026-04-27
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1098.001
logsource:
    product: okta
    service: okta
detection:
    selection:
        eventType: 'system.idp.lifecycle.create'
    condition: selection
falsepositives:
    - When an admin creates a new, authorised identity provider.
level: medium
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