MISP/docs/CONFIG.s3-attachments.md

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Using S3 as an attachment store
===============================
It is possible to use Amazon's Simple Storage Service (S3) to store event attachments
to allow for a stateless MISP setup (i.e for containerisation)
There's a massive caveat here so let me make this incredibly clear
##############################################
# WARNING WARNING WARNING #
# #
# Storing malware is against amazon's #
# terms of service. #
# #
# DO NOT USE THIS UNLESS YOU HAVE #
# THEIR EXPLICIT PERMISSION #
##############################################
0. Installing Dependencies
--------------------------
Install the AWS PHP SDK
```bash
cd /var/www/MISP/app
sudo -u www-data php composer.phar require aws/aws-sdk-php
```
1. Creating an S3 bucket
-------------------------
Go to https://s3.console.aws.amazon.com/s3/home
And create a bucket. It has to have a globally unique name, and
this cannot be changed later on.
2a. Using an EC2 instance for MISP
-----------------------------------
If you run MISP on EC2, this will be super duper easy peasy.
Simply create an IAM role with the following permissions and assign it to the instance
by right-clicking and selecting "Instance Settings -> Attach/Replace IAM role"
```json
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "PermitMISPAttachmentsToS3",
"Effect": "Allow",
"Action": [
"s3:*"
],
"Resource": [
"arn:aws:s3:::your-bucket-name"
]
}
]
}
```
2b. Using AWS access keys
-------------------------
This is not recommended, but it works I think.
Create a new programmatic access user via IAM and apply the same
policy outlined above.
Copy the access keys and save them for the next step
3. Setting up MISP
------------------
In Administration -> Server Settings & Maintenance -> MISP settings
Set MISP.attachments_dir to "s3://"
In Administration -> Server Settings & Maintenance -> Plugin Settings -> S3
Set S3_enable to True
Set S3_bucket-name to the bucket you created earlier
Set S3_region to your region
ONLY IF YOU DID NOT USE THE EC2 METHOD
Set aws_access_key and aws_secret_key to the ones you created in 2b
Now theoretically it should work.
Addendum
========
If you are migrating a server currently in use, simply copy the directory structure from
the attachments folder (usually /var/www/MISP/app/files) to S3 and everything should
continue to work.