> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/storage/appsec-aws-256.md).

# AWS DLM cross-region schedules are not encrypted using a Customer Managed Key (CMK) misconfiguration

## Rule Details

|                        |                      |
| ---------------------- | -------------------- |
| Cortex AppSec Rule ID  | APPSEC\_AWS\_256     |
| Category - Subcategory | Storage - Encryption |
| Provider               | AWS                  |
| Severity               | LOW                  |
| Framework              | Terraform            |

## Impact

This rule identifies Elastic File DLM cross-region schedules which are encrypted with default KMS keys and not with Keys managed by Customer. It is a best practice to use customer managed KMS Keys to encrypt your DLM cross-region schedules data. It gives you full control over the encrypted data.

## How to Fix

*Resource:* aws\_dlm\_lifecycle\_policy

* *Arguments:* cross\_region\_copy\_rule.cmk\_arn \[source,go]

***

resource "aws\_dlm\_lifecycle\_policy" "pass" { description = "example DLM lifecycle policy" execution\_role\_arn = aws\_iam\_role.dlm\_lifecycle\_role.arn state = "ENABLED"

policy\_details { resource\_types = \["VOLUME"]

schedule { name = "2 weeks of daily snapshots"

create\_rule { interval = 24 interval\_unit = "HOURS" times = \["23:45"] }

retain\_rule { count = 14 }

tags\_to\_add = { SnapshotCreator = "DLM" }

copy\_tags = false

cross\_region\_copy\_rule { target = "us-west-2" encrypted = true cmk\_arn = aws\_kms\_key.dlm\_cross\_region\_copy\_cmk.arn copy\_tags = true retain\_rule { interval = 30 interval\_unit = "DAYS" } }

cross\_region\_copy\_rule { target = "us-west-2" encrypted = true cmk\_arn = aws\_kms\_key.dlm\_cross\_region\_copy\_cmk.arn copy\_tags = true retain\_rule { interval = 20 interval\_unit = "DAYS" } } }

## target\_tags = { Snapshot = "true" } } tags = { test = "failed" } }


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