AWS CLI authenticator via ADFS - small command-line tool to authenticate via ADFS and assume chosen role
The project provides command line tool - aws-adfs to ease AWS cli authentication against ADFS (multi factor authentication with active directory).
aws-adfs command line toolallows you to re-login to STS without entering credentials for an extended period of time, without having to store the user's actual credentials. It also lets an organization control the period in which a user can re-login to STS without entering credentials, by altering the ADFS session lifetime.
supports automation tools like ansible by providing security token in AWS_SESSION_TOKEN/AWS_SECURITY_TOKEN environment variables.
supports using Security Support Provider Interface (SSPI) on Windows OS.
aws-adfs integrates with:
Duo Push authentication method.Phone Call authentication method.Passcode authentication method.WebAuthn Security Key authentication method.build-essential (provides C/C++ compilers)python3 >= 3.7 <4.0python3-devlibkrb5-devlibxml2-devuser local installation with pipx
pipx install aws-adfs
user local installation with pip
pip3 install --user aws-adfs
Please note, that you need to add $HOME/.local/bin to your PATH
system wide installation
sudo pip3 install aws-adfs
virtualenvs
virtualenv aws-adfs
source aws-adfs/bin/activate
pip install aws-adfs
...
...
deactivate
Windows 10
C:\Program Files:
C:
cd 'C:\Program Files\'
python3 -m venv aws-adfs
aws-adfs:
& 'C:\Program Files\aws-adfs\Scripts\pip' install aws-adfs
& 'C:\Program Files\aws-adfs\Scripts\aws-adfs' login --adfs-host=your-adfs-hostname
aws-adfslogin to your adfs host with disabled ssl verification on aws cli profile: adfs
aws-adfs login --adfs-host=your-adfs-hostname --no-ssl-verification
and verification
aws --profile=adfs s3 ls
login to your adfs host with disabled ssl verification on specified aws cli profile: specified-profile
aws-adfs login --profile=specified-profile --adfs-host=your-adfs-hostname --no-ssl-verification
and verification
aws --profile=specified-profile s3 ls
login to your adfs host and fetch roles for AWS GovCloud (US)
aws-adfs login --adfs-host=your-adfs-hostname --provider-id urn:amazon:webservices:govcloud --region us-gov-west-1
and verification
aws s3 ls
login to your adfs host within ansible playbook
---
- name: "Auth sts aws"
command: "aws-adfs login --adfs-host sts.example.com --env --stdout --role-arn arn:aws:iam::000123456789:role/ADMIN"
register: sts_result
environment:
- username: "{{ ansible_user }}@example.com"
- password: "{{ ansible_ssh_pass }}"
- name: "Set sts facts"
set_fact:
sts: "{{ sts_result.stdout | from_json }}"
- name: "List s3 Buckets"
aws_s3_bucket_facts:
aws_access_key: "{{ sts.AccessKeyId }}"
aws_secret_key: "{{ sts.SecretAccessKey }}"
security_token: "{{ sts.SessionToken }}"
region: "us-east-1"
register: buckets
- name: "Print Buckets"
debug:
var: buckets
login to your adfs host by passing username and password credentials via a file
aws-adfs login --adfs-host=your-adfs-hostname --authfile=/path/and/file/name
Auth file should be in format of
[profile_name]
username = your_username
password = your_password
.aws/config profile for automatically refreshing credentials
[profile example-role-ue1]
credential_process=aws-adfs login --region=us-east-1 --role-arn=arn:aws:iam::1234567891234:role/example-role --adfs-host=adfs.example.com --stdout
Warning: see AWS documentation about security considerations to take when sourcing credentials with an external process.
help, help, help?
$ aws-adfs --help
Usage: aws-adfs [OPTIONS] COMMAND [ARGS]...
Options:
--version Show current tool version
-v, --verbose Enables debug information on stdout. By default log level is
set on ERROR
--help Show this message and exit.
Commands:
list lists available profiles
login Authenticates an user with active directory credentials
reset removes stored profile
$ aws-adfs list --help
Usage: aws-adfs list [OPTIONS]
lists available profiles
Options:
--help Show this message and exit.
$ aws-adfs login --help
Usage: aws-adfs login [OPTIONS]
Authenticates an user with active directory credentials
Options:
--profile TEXT AWS cli profile that will be authenticated.
After successful authentication just use:
aws --profile <authenticated profile>
<service> ...
--region TEXT The default AWS region that this script will
connect to for all API calls
--ssl-verification / --no-ssl-verification
SSL certificate verification: Whether or not
strict certificate verification is done,
False should only be used for dev/test
--adfs-ca-bundle TEXT Override CA bundle for SSL certificate
verification for ADFS server only.
--adfs-host TEXT For the first time for a profile it has to
be provided, next time for the same profile
it will be loaded from the stored
configuration
--output-format [json|text|table]
Output format used by aws cli
--provider-id TEXT Provider ID, e.g urn:amazon:webservices
(optional)
--s3-signature-version [s3v4] s3 signature version: Identifies the version
of AWS Signature to support for
authenticated requests. Valid values: s3v4
--username-password-command TEXT
Read username and password from the output
of a shell command (expected JSON format:
`{"username": "myusername", "password":
"mypassword"}`)
--mfa-token-command TEXT Read MFA token for Symantec or RSA
authenticators from the output of a shell
command (expected JSON format:
`{"mfa_token": "123654"}`)
--env Read username, password and optionally an
MFA token from environment variables
(username, password and mfa_token).
--stdin Read username, password from standard input
separated by a newline.
--authfile TEXT Read username, password from a local file
(optional)
--stdout Print aws_session_token in json on stdout.
--printenv Output commands to set AWS_ACCESS_KEY_ID,
AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN,
AWS_DEFAULT_REGION environmental variables
instead of saving them to the aws
configuration file.
--print-console-signin-url Output a URL that lets users who sign in to
your organization's network securely access
the AWS Management Console.
--console-role-arn TEXT Role to assume for use in conjunction with
--print-console-signin-url
--console-external-id TEXT External ID to pass in assume role for use
in conjunction with --print-console-signin-
url
--role-arn TEXT Predefined role arn to selects, e.g. aws-
adfs login --role-arn arn:aws:iam::123456789
012:role/YourSpecialRole
--session-duration INTEGER Define the amount of seconds you want to
establish your STS session, e.g. aws-adfs
login --session-duration 3600
--no-session-cache Do not use AWS session cache in
~/.aws/adfs_cache/ directory.
--assertfile TEXT Use SAML assertion response from a local
file
--sspi / --no-sspi Whether or not to use Kerberos SSO
authentication via SSPI (Windows only,
defaults to True).
--duo-factor TEXT Use a specific Duo factor, overriding the
default one configured server side. Known
Duo factors that can be used with aws-adfs
are "Duo Push", "Passcode", "Phone Call" and
"WebAuthn Security Key".
--duo-device TEXT Use a specific Duo device, overriding the
default one configured server side. Depends
heavily on the Duo factor used. Known Duo
devices that can be used with aws-adfs are
"phone1" for "Duo Push" and "Phone Call"
factors. For "Passcode" and "WebAuthn
Security Key" factors, it is always "None".
--enforce-role-arn Only allow the role passed in by --role-arn.
--aad-verification-code TEXT Verification code for Azure AD multi-factor
authentication.
--help Show this message and exit.
$ aws-adfs reset --help
Usage: aws-adfs reset [OPTIONS]
removes stored profile
Options:
--profile TEXT AWS cli profile that will be removed
--help Show this message and exit.
duo-security
Error: Cannot begin authentication process. The error response: {"message": "Unknown authentication method.", "stat": "FAIL"}
Please setup preferred auth method in duo-security settings (settings' -> 'My Settings & Devices').
USB FIDO2 does not work in Windows Subsystem for Linux (WSL)
OSError: [Errno 2] No such file or directory: '/sys/class/hidraw'
USB devices are not accessible in WSL, please install and run aws-adfs on the Windows 10 host and then access the credentials in WSL from the filesystem. Example:
export AWS_CONFIG_FILE=/mnt/c/Users/username/.aws/config
export AWS_SHARED_CREDENTIALS_FILE=/mnt/c/Users/username/.aws/credentials
FIDO2 devices are not detected on Windows 10 build 1903 or newer
Running aws-adfs as Administrator is required since Windows 10 build 1903 to access FIDO2 devices, cf. https://github.com/Yubico/python-fido2/issues/55)
in cases of trouble with lxml please install
sudo apt-get install python3-dev libxml2-dev libxslt1-dev zlib1g-dev
in cases of trouble with pykerberos please install
sudo apt-get install python3-dev libkrb5-dev
in cases of trouble with OSX Sierra (obsolete OpenSSL), upgrade OpenSSL. Example:
brew upgrade openssl
AND add explicit directive to .bash_profile:
export PATH=$(brew --prefix openssl)/bin:$PATH
only python >= 3.7 to <4.0 are supported:
poetry update
poetry run pytest
export CHANGELOG_GITHUB_TOKEN=$(gopass show -o pins/Github/github-changelog-generator)
./scripts/release.sh patch # or minor, major, prepatch, preminor, premajor, prerelease, or a valid semver string
See the CHANGELOG.md file, which is generated using github-changelog-generator.
FAQs
AWS CLI authenticator via ADFS - small command-line tool to authenticate via ADFS and assume chosen role
We found that aws-adfs demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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