cis-gworkspace-3.1.2.1.1.3

DevOps & Security

Ensure document sharing is being controlled by domain with allowlists

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Cloud_Providers/Google_Workspace/CIS_Google_Workspace_Foundations_Benchmark_v1.3.0/cis-gworkspace-3.1.2.1.1.3/SKILL.md

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3.1.2.1.1.3 Ensure document sharing is being controlled by domain with allowlists

Level

Profile Applicability

Enterprise Level 2

Type

Manual

Description

You should control sharing of documents to external domains by either blocking domains or only allowing sharing with specific named domains.

Rationale

Attackers will often attempt to expose sensitive information to external entities through sharing, and restricting the domains that your users can share documents with will reduce that surface area.

Impact

Enabling this feature will prevent users from sharing documents with domains outside of the organization unless allowed.

Audit

To verify this setting via the Google Workspace Admin Console:

Log in to https://admin.google.com as an administrator
Select Apps
Select Google Workspace
Select Drive and Docs
Under Sharing settings, select Sharing options
Under Sharing outside of <Company>, ensure ALLOWLISTED DOMAINS - Files owned by users in <Company> can be shared with Google Accounts in compatible allowlisted domains. is selected
Ensure Warn when files owned by users or shared drives in <Company> are shared with users in allowlisted domains is checked

Remediation

To configure this setting via the Google Workspace Admin Console:

Log in to https://admin.google.com as an administrator
Select Apps
Select Google Workspace
Select Drive and Docs
Under Sharing settings, select Sharing options
Under Sharing outside of <Company>, select ALLOWLISTED DOMAINS - Files owned by users in <Company> can be shared with Google Accounts in compatible allowlisted domains.
Set Warn when files owned by users or shared drives in <Company> are shared with users in allowlisted domains to checked
Select Save

Default Value

Sharing outside of <Company> is ON - Files owned by users in <Company> can be shared outside of <Company>. This applies to files in all shared drives as well.

CIS Controls

Controls Version	Control	IG 1	IG 2	IG 3
v8	3.3 Configure Data Access Control Lists	x	x	x
v7	14.6 Protect Information through Access Control Lists	x	x	x