IMDShift – Automates Migration Process Of Workloads To IMDSv2 To Avoid SSRF Attacks
AWS workloads that rely on the metadata endpoint are vulnerable to Server-Side Request Forgery (SSRF) attacks. IMDShift automates the migration process of all workloads to IMDSv2 with extensive capabilities, which implements enhanced security measures to protect against these attacks.
Features
- Detection of AWS workloads that rely on the metadata endpoint amongst various services which includes – EC2, ECS, EKS, Lightsail, AutoScaling Groups, Sagemaker Notebooks, Beanstalk (in progress)
- Simple and intuitive command-line interface for easy usage
- Automated migration of all workloads to IMDSv2
- Standalone hop limit update for compatible resources
- Standalone metadata endpoint enable operation for compatible resources
- Detailed logging of migration process
- Identify resources that are using IMDSv1, using the
MetadataNoTokenCloudWatch metric across specified regions - Built-in Service Control Policy (SCP) recommendations
IMDShift vs. Metabadger
Metabadger is an older tool that was used to facilitate migration of AWS EC2 workloads to IMDSv2.
IMDShift makes several improvements on Metabadger’s capabilities:
- IMDShift allows migration of standalone services and not all EC2 instances, blindly. For example, the user can choose to only migrate EKS workloads, also some services such as Lightsail, do not fall under EC2 umbrella, IMDShift has the capability to migrate such resources as well.
- IMDShift allows standalone enabling of metadata endpoint for resources it is currently disabled, without having to perform migration on the remaining resources
- IMDShift allows standalone update response hop limit for resources where metadata endpoint is enabled, without having to perform migration on the remaining resources
- IMDShift allows, not only the option to include specific regions, but also skip specified regions
- IMDShift not only allows usage of AWS profiles, but also can assume roles, to work
- IMDShift helps with post-migration activities, by suggesting various Service Control Policies (SCPs) to implement.
Installation
Production Installation
git clone https://github.com/ayushpriya10/imdshift.git
cd imdshift/
python3 -m pip install .Development Installation
git clone https://github.com/ayushpriya10/imdshift.git
cd imdshift/
python3 -m pip install -e .Usage
Options:
--services TEXT This flag specifies services scan for IMDSv1
usage from [EC2, Sagemaker, ASG (Auto Scaling
Groups), Lightsail, ECS, EKS, Beanstalk].
Format: "--services EC2,Sagemaker,ASG"
--include-regions TEXT This flag specifies regions explicitly to
include scan for IMDSv1 usage. Format: "--
include-regions ap-south-1,ap-southeast-1"
--exclude-regions TEXT This flag specifies regions to exclude from the
scan explicitly. Format: "--exclude-regions ap-
south-1,ap-southeast-1"
--migrate This boolean flag enables IMDShift to perform
the migration, defaults to "False". Format: "--
migrate"
-- update-hop-limit INTEGER This flag specifies if the hop limit should be
updated and with what value. It is recommended
to set the hop limit to "2" to enable containers
to be able to work with the IMDS endpoint. If
this flag is not passed, hop limit is not
updated during migration. Format: "--update-hop-
limit 3"
--enable-imds This boolean flag enables IMDShift to enable the
metadata endpoint for resources that have it
disabled and then perform the migration,
defaults to "False". Format: "--enable-imds"
--profile TEXT This allows you to use any profile from your
~/.aws/credentials file. Format: "--profile
prod-env"
--role-arn TEXT This flag let's you assume a role via aws sts.
Format: "--role-arn
arn:aws:sts::111111111:role/John"
--print-scps This boolean flag prints Service Control
Policies (SCPs) that can be used to control IMDS
usage, like deny access for credentials fetched
from IMDSv2 or deny creation of resources with
IMDSv1, defaults to "False". Format: "--print-
scps"
--check-imds-usage This boolean flag launches a scan to identify
how many instances are using IMDSv1 in specified
regions, during the last 30 days, by using the
"MetadataNoToken" CloudWatch metric, defaults to
"False". Format: "--check-imds-usage"
--help Show this message and exit.
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