aws-adfs

The project provides command line tool - aws-adfs to ease aws cli authentication against ADFS (multi factor authentication with active directory) and

aws-adfs command line tool

Thanks to Brandond contribution - "Remove storage of credentials, in favor of storing ADFS session cookies" aws-adfs:

allows 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.

Thanks to Brandond contribution - "Add support for legacy aws_security_token key in credentials file" aws-adfs supports ansible by providing two keys with security token:

• AWS_SESSION_TOKEN and
• AWS_SECURITY_TOKEN

Thanks to Brandond contribution - "Add support for Kerberos SSO on Windows via requests_negotiate_sspi"

• on windows os will be used Security Support Provider Interface

Compatibility

As of version 0.2.0, this tool acts on the 'default' profile unless an alternate profile name has been specified on the command line or in your environment. Previous versions acted on the 'adfs' profile by default.

MFA integration

aws-adfs integrates with:

• duo security MFA provider
• Symantec VIP MFA provider
• RSA SecurID MFA provider

Installation

• user local installation

  pip install aws-adfs
  

  Please note, that you need to add $HOME/.local/bin to your PATH

• system wide installation

  sudo pip install aws-adfs
  

• virtualenvs

  virtualenv -p /usr/bin/python2.7 aws-adfs
  source aws-adfs/bin/activate
  pip install aws-adfs
  ...
  ...
  deactivate
  

Examples of usage

aws-adfs

• login 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 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
  

• help, help, help?

  $ aws-adfs --help
  Usage: aws-adfs [OPTIONS] COMMAND [ARGS]...
  
  Options:
    --version  Show current tool version
    --help  Show this message and exit.
  
  Commands:
    list   lists available profiles
    login  Authenticates an user with active directory...
    reset  removes stored profile
  

  $ aws-adfs list --help
  Usage: aws-adfs list [OPTIONS]
  
    lists available profiles
  
  Options:
    --version  Show current tool version
    --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-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]
    --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.',
                                    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
    --env                           Read username, password from environment
                                    variables (username and password).
    --stdin                         Read username, password from standard input
                                    separated by a newline.
    --stdout                        Print aws_session_token in json on stdout.
    --role-arn TEXT                 Predefined role arn to selects, 
                                    e.g. aws-adfs login --role-arn arn:aws:iam::123456789012: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
    --help                          Show this message and exit.
  

  $ aws-adfs reset --help                                                                                                                                              13:39
  Usage: aws-adfs reset [OPTIONS]
  
    removes stored profile
  
  Options:
    --profile TEXT  AWS cli profile that will be removed
    --help          Show this message and exit.
  

Known issues

• duo-security

  • Error: Cannot begin authentication process. The error response: {"message": "Unknown authentication method.", "stat": "FAIL"}

    Please setup preferred auth method in duo-sercurity settings (settings' -> 'My Settings & Devices').

• in cases of trouble with lxml please install

  sudo apt-get install python-dev libxml2-dev libxslt1-dev zlib1g-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
  

• python 2.6 is not supported

• python 3.2 is not supported

Credits

• Brandond for: Remove storage of credentials, in favor of storing ADFS session cookies
• Brandond for: Add support for legacy aws_security_token key in credentials file
• Brandond for: Store last username in profile config; use it as default for prompt
• Brandond for: python 3 compatibility
• Brandond for: Add support for Kerberos SSO on Windows via requests_negotiate_sspi
• Brandond for: ssl_verification must be a str
• Brandond for: Move pytest-runner out of setup-requires
• Brandond for: Improve handling of role selection
• Brandond for: Improve handling of errors caused by excessive cookie growth
• Brandond for: Default to 'default' profile, in line with other AWS tools
• kwhitlock for: Added extra option "--provider-id"
• SydOps for: add additional information in list command's output
• eric-nord for: bringing topic of duo security MFA integration
• roblugton for: Fix formatting in README.md
• cliv for: pointing out the issue with missing preferred device for duo-security and providing workaround
• AndrewFarley for: Bug in parsing Duo host and signature, backwards compatible
• eikenb for: Version 0.3.4 returns no roles - thanks for vigilance of eikenb spoiled egg was identified
• eikenb for: add login argument to accept username/password from stdin
• irgeek for: Add Symantec VIP Access support
• Brandond for: Fix Negotiate auth on non-domain-joined Windows hosts
• giafar for: Role arn as parameter
• zanettibo for: Add support for Ansible Tower/AWX workflow authentication
• anthoneous and KyleJamesWalker for: add session duration flag
• KyleJamesWalker for: Allow phone call authentication
• KyleJamesWalker for: Change default profile to default
• kwhitlock for: Feature/read username and password from file
• avoidik for: Workaround of Symantec VIP obfuscated form
• leonardo-test for fix: The --env flag is not being called and therefore using the env parameter will not work.
• NotMrSteve for: Add RSA SecurID MFA
• JLambeth for: Added flag for disabling Kerberos SSO authentication via SSPI