---
title: ActionTrail trail OSS bucket is publicly accessible
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Infrastructure as Code (IaC)
  Security > IaC Security Rules > ActionTrail trail OSS bucket is publicly
  accessible
---

# ActionTrail trail OSS bucket is publicly accessible

{% callout %}
# Important note for users on the following Datadog sites: app.ddog-gov.com, us2.ddog-gov.com

{% alert level="danger" %}
This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site.md). ({% placeholder "user-datadog-site-name" /%}).
{% /alert %}

{% /callout %}

## Metadata{% #metadata %}

**Id:** `terraform-alicloud-actiontrail-trail-oss-bucket-is-publicly-accessible` 

**Provider:** Alicloud

**Platform:** Terraform

**Severity:** High

**Category:** Observability

#### Learn More{% #learn-more %}

- [Provider Reference](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/actiontrail_trail)

### Description{% #description %}

The OSS bucket used by `alicloud_actiontrail_trail` must not be publicly accessible. This rule flags `alicloud_oss_bucket` resources with `acl` set to `public-read` or `public-read-write`, as these settings expose sensitive log data. The `acl` should be set to private to restrict access.

## Compliant Code Examples{% #compliant-code-examples %}

```terraform
resource "alicloud_oss_bucket" "bucket_actiontrail1" {
  bucket = "bucket_actiontrail_1"
  acl    = "private"
}

resource "alicloud_actiontrail_trail" "actiontrail1" {
  trail_name         = "action-trail"
  oss_write_role_arn = "acs:ram::1182725xxxxxxxxxxx"
  oss_bucket_name    = "bucket_actiontrail_1"
  event_rw           = "All"
  trail_region       = "All"
}
```

```terraform
resource "alicloud_oss_bucket" "bucket_actiontrail2" {
  bucket = "bucket_actiontrail_2"
}

resource "alicloud_actiontrail_trail" "actiontrail2" {
  trail_name         = "action-trail"
  oss_write_role_arn = "acs:ram::1182725xxxxxxxxxxx"
  oss_bucket_name    = "bucket_actiontrail_2"
  event_rw           = "All"
  trail_region       = "All"
}
```

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```terraform
resource "alicloud_oss_bucket" "bucket_actiontrail3" {
  bucket = "bucket_actiontrail_3"
  acl    = "public-read"
}

resource "alicloud_actiontrail_trail" "actiontrail3" {
  trail_name         = "action-trail"
  oss_write_role_arn = "acs:ram::1182725xxxxxxxxxxx"
  oss_bucket_name    = "bucket_actiontrail_3"
  event_rw           = "All"
  trail_region       = "All"
}
```

```terraform
resource "alicloud_oss_bucket" "bucket_actiontrail4" {
  bucket = "bucket_actiontrail_4"
  acl    = "public-read-write"
}

resource "alicloud_actiontrail_trail" "actiontrail4" {
  trail_name         = "action-trail"
  oss_write_role_arn = "acs:ram::1182725xxxxxxxxxxx"
  oss_bucket_name    = "bucket_actiontrail_4"
  event_rw           = "All"
  trail_region       = "All"
}
```