# AWS - CloudFront Post Exploitation
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## CloudFront
For more information check:
{% content-ref url="../aws-services/aws-cloudfront-enum.md" %}
[aws-cloudfront-enum.md](../aws-services/aws-cloudfront-enum.md)
{% endcontent-ref %}
### Man-in-the-Middle
This [**blog post**](https://medium.com/@adan.alvarez/how-attackers-can-misuse-aws-cloudfront-access-to-make-it-rain-cookies-acf9ce87541c) proposes a couple of different scenarios where a **Lambda** could be added (or modified if it's already being used) into a **communication through CloudFront** with the purpose of **stealing** user information (like the session **cookie**) and **modifying** the **response** (injecting a malicious JS script).
#### scenario 1: MitM where CloudFront is configured to access some HTML of a bucket
* **Create** the malicious **function**.
* **Associate** it with the CloudFront distribution.
* Set the **event type to "Viewer Response"**.
Accessing the response you could steal the users cookie and inject a malicious JS.
#### scenario 2: MitM where CloudFront is already using a lambda function
* **Modify the code** of the lambda function to steal sensitive information
You can check the [**tf code to recreate this scenarios here**](https://github.com/adanalvarez/AWS-Attack-Scenarios/tree/main).
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