Force Multi-Factor Authentication (MFA) on AWS IAM Accounts

Force_MFA

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "AllowAllUsersToListAccounts",
            "Effect": "Allow",
            "Action": [
                "iam:ListAccountAliases",
                "iam:ListUsers",
                "iam:GetAccountSummary"
            ],
            "Resource": "*"
        },
        {
            "Sid": "AllowIndividualUserToSeeAndManageTheirOwnAccountInformation",
            "Effect": "Allow",
            "Action": [
                "iam:ChangePassword",
                "iam:CreateAccessKey",
                "iam:CreateLoginProfile",
                "iam:DeleteAccessKey",
                "iam:DeleteLoginProfile",
                "iam:GetAccountPasswordPolicy",
                "iam:GetLoginProfile",
                "iam:ListAccessKeys",
                "iam:UpdateAccessKey",
                "iam:UpdateLoginProfile",
                "iam:ListSigningCertificates",
                "iam:DeleteSigningCertificate",
                "iam:UpdateSigningCertificate",
                "iam:UploadSigningCertificate",
                "iam:ListSSHPublicKeys",
                "iam:GetSSHPublicKey",
                "iam:DeleteSSHPublicKey",
                "iam:UpdateSSHPublicKey",
                "iam:UploadSSHPublicKey"
            ],
            "Resource": "arn:aws:iam::ACCOUNT_ID:user/${aws:username}"
        },
        {
            "Sid": "AllowIndividualUserToListTheirOwnMFA",
            "Effect": "Allow",
            "Action": [
                "iam:ListVirtualMFADevices",
                "iam:ListMFADevices"
            ],
            "Resource": [
                "arn:aws:iam::ACCOUNT_ID:mfa/*",
                "arn:aws:iam::ACCOUNT_ID:user/${aws:username}"
            ]
        },
        {
            "Sid": "AllowIndividualUserToManageTheirOwnMFA",
            "Effect": "Allow",
            "Action": [
                "iam:CreateVirtualMFADevice",
                "iam:DeactivateMFADevice",
                "iam:DeleteVirtualMFADevice",
                "iam:RequestSmsMfaRegistration",
                "iam:FinalizeSmsMfaRegistration",
                "iam:EnableMFADevice",
                "iam:ResyncMFADevice"
            ],
            "Resource": [
                "arn:aws:iam::ACCOUNT_ID:mfa/${aws:username}",
                "arn:aws:iam::ACCOUNT_ID:user/${aws:username}"
            ]
        },
        {
            "Sid": "BlockAnyAccessOtherThanAboveUnlessSignedInWithMFA",
            "Effect": "Deny",
            "NotAction": [
                "iam:ListAccountAliases",
                "iam:ListUsers",
                "iam:GetAccountSummary",
                "iam:ChangePassword",
                "iam:CreateAccessKey",
                "iam:CreateLoginProfile",
                "iam:DeleteAccessKey",
                "iam:DeleteLoginProfile",
                "iam:GetAccountPasswordPolicy",
                "iam:GetLoginProfile",
                "iam:ListAccessKeys",
                "iam:UpdateAccessKey",
                "iam:UpdateLoginProfile",
                "iam:ListSigningCertificates",
                "iam:DeleteSigningCertificate",
                "iam:UpdateSigningCertificate",
                "iam:UploadSigningCertificate",
                "iam:ListSSHPublicKeys",
                "iam:GetSSHPublicKey",
                "iam:DeleteSSHPublicKey",
                "iam:UpdateSSHPublicKey",
                "iam:UploadSSHPublicKey",
                "iam:ListVirtualMFADevices",
                "iam:ListMFADevices",
                "iam:CreateVirtualMFADevice",
                "iam:DeactivateMFADevice",
                "iam:DeleteVirtualMFADevice",
                "iam:RequestSmsMfaRegistration",
                "iam:FinalizeSmsMfaRegistration",
                "iam:EnableMFADevice",
                "iam:ResyncMFADevice"
            ],
            "Resource": "*",
            "Condition": {
                "BoolIfExists": {
                    "aws:MultiFactorAuthPresent": "false"
                }
            }
        }
    ]
}