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Cis AWS Euc 4.5

DevOps & Security
cis-aws-euc-4.5

Cis AWS Euc 4.5 is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.

Ensure new users can only be invited from allowed domains

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How to use this skill

Bring this guide into your coding agent with a prompt tailored to the tool you use.

  1. Open your project in Codex.
  2. Copy and paste the prompt below.
  3. Review files and risks before approving any action.
Prompt to paste
Inspect the Agent Skill at https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/CIS_benchmarks/Cloud_Providers/AWS/CIS_AWS_End_User_Compute_Services_Benchmark_v1.2.0/cis-aws-euc-4.5/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/cis-aws-euc-4-5, but wait for my approval before writing files or running scripts.

Copying this prompt does not install or run the skill. Review third-party files before use.

Ensure new users can only be invited from allowed domains (Manual)

Profile Applicability

  • Level 1

Description

Users that are allowed access to shared files or folders in WorkDocs should be limited to specific domains.

Rationale

To control who should be allowed to join your WorkDocs site, users should be limited on who they can invite sharing files or folders with new people from the specified domains.

Audit Procedure

Perform the steps to confirm WorkDocs file and sharing folders is controlled by specified domains.

Using WorkDocs Admin Control Panel

  1. Log in to WorkDocs as an Administrator
  2. Click Security
  3. Under Invite settings
  4. Confirm that only:

Users can invite new people from a few specific domains by sharing files or folders with them

  1. Confirm the listed Domains is accurate

If the setting is not set to "Users can invite new people from a few specific domains by sharing files or folders with them" or the domains listed is not accurate refer to the remediation below.

Using AWS Console

Not applicable - must be audited via WorkDocs Admin control panel.

Expected Result

WorkDocs invite settings restrict user invitations to approved domains only.

Remediation

Using WorkDocs Admin Control Panel

Perform the steps to set WorkDocs file and sharing folders to be controlled by specified domains:

  1. Log in to WorkDocs as an Administrator
  2. Click Security
  3. Under Invite settings
  4. Select:

Users can invite new people from a few specific domains by sharing files or folders with them

  1. Add in or edit the listed allowed Domains

Using AWS CLI

Not applicable - must be configured via WorkDocs Admin control panel.

Default Value

By default, this setting is disabled.

References

  1. https://docs.aws.amazon.com/workdocs/latest/adminguide/manage-sites.html

CIS Controls

v8:

  • 3.3 Configure Data Access Control Lists
    • Configure data access control lists based on a user's need to know. Apply data access control lists, also known as access permissions, to local and remote file systems, databases, and applications.

v7:

  • 14.6 Protect Information through Access Control Lists
    • Protect all information stored on systems with file system, network share, claims, application, or database specific access control lists. These controls will enforce the principle that only authorized individuals should have access to the information based on their need to access the information as a part of their responsibilities.

Profile

Level 1