> 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/public-exposure/appsec-aws-259.md).

# AWS CloudFront response header policy does not enforce Strict Transport Security misconfiguration de

## Rule Details

|                        |                                            |
| ---------------------- | ------------------------------------------ |
| Cortex AppSec Rule ID  | APPSEC\_AWS\_259                           |
| Category - Subcategory | Public Exposure - Encryption And Protocols |
| Provider               | AWS                                        |
| Severity               | LOW                                        |
| Framework              | Terraform                                  |

## Impact

Enforcing Strict Transport Security (HSTS) in your AWS CloudFront response header policy can help to improve the security of your website or application. HSTS is a security feature that tells web browsers to only communicate with a website using secure HTTPS connections, rather than insecure HTTP connections. This helps to prevent man-in-the-middle attacks and other types of vulnerabilities that could be exploited over an unencrypted connection.

## How to Fix

## \[source,go]

resource "aws\_cloudfront\_response\_headers\_policy" "pass" { name = "test"

## security\_headers\_config { strict\_transport\_security { access\_control\_max\_age\_sec = 31536000 include\_subdomains = true override = true preload = true } } }


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