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# AWS S3 bucket has global view ACL permissions enabled misconfiguration detected in code

## Rule Details

|                        |                                      |
| ---------------------- | ------------------------------------ |
| Cortex AppSec Rule ID  | APPSEC\_AWS\_375                     |
| Category - Subcategory | Public Exposure - Storage Buckets    |
| Provider               | AWS                                  |
| Severity               | LOW                                  |
| Framework              | Terraform, Terraform Plan            |
| Mapped CSPM/KSPM Rule  | 50bb0789-ec44-4b33-b409-43d6c6ea49af |

## Impact

This rule detects whether AWS S3 buckets have global view ACL (Access Control List) permissions enabled. It aims to prevent buckets from being publicly accessible, which could occur if global read permissions are granted through its ACL settings.

## How to Fix

*Resource:* aws\_s3\_bucket\_acl

* *Arguments:* access\_control\_policy

Set your AWS S3 bucket ACL to private to avoid global view permissions. Do not use settings like public-read, public-read-write, or authenticated-read. Instead, use specific bucket policies and IAM roles to restrict access.

## This example demonstrates how to modify your Terraform configuration to ensure the S3 bucket's ACL does not have global view ACL permissions. \[source,go]

resource "aws\_s3\_bucket\_acl" "example" { ... access\_control\_policy { grant { grantee { type = "Group"

* uri = "<http://acs.amazonaws.com/groups/global/AllUsers>" } permission = "READ\_ACP" } }

***


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