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Cis AWS Storage 2.9

DevOps & Security
cis-aws-storage-2.9

Cis AWS Storage 2.9 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 Granular Policy Creation

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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_Storage_Services_Benchmark_v1.0.0/cis-aws-storage-2.9/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/cis-aws-storage-2-9, 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.

CIS Control 2.9: Ensure Granular Policy Creation (Manual)

Profile Applicability

  • Level 2

Description

Granular policies are meticulously tailored to AWS resources, ensuring precision in access control measures.

Rationale

Emphasizing granular policies in AWS ensures that access control measures are precisely aligned with the requirements of each resource, bolstering security and minimizing unauthorized access. By tailoring policies to specific resources, organizations can adhere more closely to the principle of least privilege, mitigating risks and maintaining compliance with regulatory standards.

Audit Procedure

Via AWS CLI

```bash

Review IAM policies for granularity

aws iam list-policies --scope Local

Examine policy document

aws iam get-policy-version
--policy-arn <POLICY_ARN>
--version-id <VERSION_ID> ```

Remediation

Review existing IAM policies to identify those that are overly broad or lack granularity. Refine these policies to restrict permissions to only the resources and actions necessary for each user or group.

References

  1. IAM Policy Tags

CIS Controls

Controls VersionControlIG 1IG 2IG 3
v86.8 Define and Maintain Role-Based Access Control●
v716.2 Configure Centralized Point of Authentication●●