mirror of
https://github.com/cwinfo/powerdns-admin.git
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Merge pull request #1457 from nkukard/nkupdates-password-policy
Implement password strength & complexity checking
This commit is contained in:
Matt Scott
GitHub
commit
4a6d31cfa4
@ -205,6 +205,14 @@ class Setting(db.Model):
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'deny_domain_override': False,
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'account_name_extra_chars': False,
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'gravatar_enabled': False,
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'pwd_enforce_characters': False,
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'pwd_min_len': 10,
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'pwd_min_lowercase': 3,
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'pwd_min_uppercase': 2,
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'pwd_min_digits': 2,
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'pwd_min_special': 1,
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'pwd_enforce_complexity': False,
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'pwd_min_complexity': 11
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}
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def __init__(self, id=None, name=None, value=None):
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@ -1557,7 +1557,23 @@ def setting_authentication():
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local_db_enabled = True if request.form.get(
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'local_db_enabled') else False
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signup_enabled = True if request.form.get(
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'signup_enabled', ) else False
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'signup_enabled') else False
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pwd_enforce_characters = True if request.form.get('pwd_enforce_characters') else False
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pwd_min_len = safe_cast(request.form.get('pwd_min_len', Setting().defaults["pwd_min_len"]), int,
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Setting().defaults["pwd_min_len"])
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pwd_min_lowercase = safe_cast(request.form.get('pwd_min_lowercase', Setting().defaults["pwd_min_lowercase"]), int,
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Setting().defaults["pwd_min_lowercase"])
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pwd_min_uppercase = safe_cast(request.form.get('pwd_min_uppercase', Setting().defaults["pwd_min_uppercase"]), int,
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Setting().defaults["pwd_min_uppercase"])
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pwd_min_digits = safe_cast(request.form.get('pwd_min_digits', Setting().defaults["pwd_min_digits"]), int,
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Setting().defaults["pwd_min_digits"])
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pwd_min_special = safe_cast(request.form.get('pwd_min_special', Setting().defaults["pwd_min_special"]), int,
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Setting().defaults["pwd_min_special"])
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pwd_enforce_complexity = True if request.form.get('pwd_enforce_complexity') else False
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pwd_min_complexity = safe_cast(request.form.get('pwd_min_complexity', Setting().defaults["pwd_min_complexity"]), int,
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Setting().defaults["pwd_min_complexity"])
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if not has_an_auth_method(local_db_enabled=local_db_enabled):
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result = {
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@ -1569,7 +1585,19 @@ def setting_authentication():
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else:
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Setting().set('local_db_enabled', local_db_enabled)
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Setting().set('signup_enabled', signup_enabled)
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Setting().set('pwd_enforce_characters', pwd_enforce_characters)
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Setting().set('pwd_min_len', pwd_min_len)
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Setting().set('pwd_min_lowercase', pwd_min_lowercase)
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Setting().set('pwd_min_uppercase', pwd_min_uppercase)
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Setting().set('pwd_min_digits', pwd_min_digits)
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Setting().set('pwd_min_special', pwd_min_special)
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Setting().set('pwd_enforce_complexity', pwd_enforce_complexity)
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Setting().set('pwd_min_complexity', pwd_min_complexity)
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result = {'status': True, 'msg': 'Saved successfully'}
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elif conf_type == 'ldap':
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ldap_enabled = True if request.form.get('ldap_enabled') else False
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@ -2151,3 +2179,10 @@ def validateURN(value):
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return False
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return True
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def safe_cast(val, to_type, default=None):
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try:
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return to_type(val)
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except (ValueError, TypeError):
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return default
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@ -5,6 +5,8 @@ import traceback
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import datetime
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import ipaddress
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import base64
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import string
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from zxcvbn import zxcvbn
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from distutils.util import strtobool
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from yaml import Loader, load
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from flask import Blueprint, render_template, make_response, url_for, current_app, g, session, request, redirect, abort
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@ -649,6 +651,92 @@ def logout():
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return redirect(redirect_uri)
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def password_policy_check(user, password):
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def check_policy(chars, user_password, setting):
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lenreq = int(Setting().get(setting))
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test_string = user_password
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for c in chars:
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test_string = test_string.replace(c, '')
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return (lenreq, len(user_password) - len(test_string))
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def matches_policy(item, policy_fails):
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return "*" if item in policy_fails else ""
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policy = []
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policy_fails = {}
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# If either policy is enabled check basics first ... this is obvious!
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if Setting().get('pwd_enforce_characters') or Setting().get('pwd_enforce_complexity'):
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# Cannot contain username
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if user.username in password:
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policy_fails["username"] = True
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policy.append(f"{matches_policy('username', policy_fails)}cannot contain username")
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# Cannot contain password
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if user.firstname in password:
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policy_fails["firstname"] = True
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policy.append(f"{matches_policy('firstname', policy_fails)}cannot contain firstname")
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# Cannot contain lastname
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if user.lastname in password:
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policy_fails["lastname"] = True
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policy.append(f"{matches_policy('lastname', policy_fails)}cannot contain lastname")
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# Cannot contain email
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if user.email in password:
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policy_fails["email"] = True
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policy.append(f"{matches_policy('email', policy_fails)}cannot contain email")
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# Check if we're enforcing character requirements
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if Setting().get('pwd_enforce_characters'):
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# Length
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pwd_min_len_setting = int(Setting().get('pwd_min_len'))
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pwd_len = len(password)
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if pwd_len < pwd_min_len_setting:
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policy_fails["length"] = True
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policy.append(f"{matches_policy('length', policy_fails)}length={pwd_len}/{pwd_min_len_setting}")
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# Digits
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(pwd_min_digits_setting, pwd_digits) = check_policy(string.digits, password, 'pwd_min_digits')
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if pwd_digits < pwd_min_digits_setting:
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policy_fails["digits"] = True
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policy.append(f"{matches_policy('digits', policy_fails)}digits={pwd_digits}/{pwd_min_digits_setting}")
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# Lowercase
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(pwd_min_lowercase_setting, pwd_lowercase) = check_policy(string.digits, password, 'pwd_min_lowercase')
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if pwd_lowercase < pwd_min_lowercase_setting:
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policy_fails["lowercase"] = True
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policy.append(f"{matches_policy('lowercase', policy_fails)}lowercase={pwd_lowercase}/{pwd_min_lowercase_setting}")
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# Uppercase
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(pwd_min_uppercase_setting, pwd_uppercase) = check_policy(string.digits, password, 'pwd_min_uppercase')
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if pwd_uppercase < pwd_min_uppercase_setting:
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policy_fails["uppercase"] = True
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policy.append(f"{matches_policy('uppercase', policy_fails)}uppercase={pwd_uppercase}/{pwd_min_uppercase_setting}")
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# Special
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(pwd_min_special_setting, pwd_special) = check_policy(string.digits, password, 'pwd_min_special')
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if pwd_special < pwd_min_special_setting:
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policy_fails["special"] = True
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policy.append(f"{matches_policy('special', policy_fails)}special={pwd_special}/{pwd_min_special_setting}")
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if Setting().get('pwd_enforce_complexity'):
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# Complexity checking
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zxcvbn_inputs = []
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for input in (user.firstname, user.lastname, user.username, user.email):
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if len(input):
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zxcvbn_inputs.append(input)
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result = zxcvbn(password, user_inputs=zxcvbn_inputs)
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pwd_min_complexity_setting = int(Setting().get('pwd_min_complexity'))
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pwd_complexity = result['guesses_log10']
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if pwd_complexity < pwd_min_complexity_setting:
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policy_fails["complexity"] = True
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policy.append(f"{matches_policy('complexity', policy_fails)}complexity={pwd_complexity:.0f}/{pwd_min_complexity_setting}")
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policy_str = {"password": f"Fails policy: {', '.join(policy)}. Items prefixed with '*' failed."}
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# NK: the first item in the tuple indicates a PASS, so, we check for any True's and negate that
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return (not any(policy_fails.values()), policy_str)
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@index_bp.route('/register', methods=['GET', 'POST'])
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def register():
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CAPTCHA_ENABLE = current_app.config.get('CAPTCHA_ENABLE')
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@ -700,6 +788,10 @@ def register():
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email=email
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)
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(password_policy_pass, password_policy) = password_policy_check(user, password)
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if not password_policy_pass:
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return render_template('register.html', error_messages=password_policy, captcha_enable=CAPTCHA_ENABLE)
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try:
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result = user.create_local_user()
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if result and result['status']:
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@ -9,6 +9,8 @@ from flask_login import current_user, login_required, login_manager
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from ..models.user import User, Anonymous
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from ..models.setting import Setting
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from .index import password_policy_check
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user_bp = Blueprint('user',
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__name__,
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@ -79,12 +81,23 @@ def profile():
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.format(current_user.username)
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}), 400)
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(password_policy_pass, password_policy) = password_policy_check(current_user.get_user_info_by_username(), new_password)
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if not password_policy_pass:
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if request.data:
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return make_response(
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jsonify({
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'status': 'error',
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'msg': password_policy['password'],
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}), 400)
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return render_template('user_profile.html', error_messages=password_policy)
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user = User(username=current_user.username,
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plain_text_password=new_password,
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firstname=firstname,
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lastname=lastname,
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email=email,
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reload_info=False)
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user.update_profile()
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return render_template('user_profile.html')
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@ -78,6 +78,7 @@
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<h3 class="card-title">Basic Settings</h3>
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</div>
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<!-- /.card-header -->
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<fieldset>
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<div class="card-body">
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<div class="form-group">
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<input type="checkbox" id="local_db_enabled"
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@ -96,6 +97,70 @@
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up</label>
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</div>
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</div>
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</fieldset>
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<fieldset>
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<legend>PASSWORD REQUIREMENTS</legend>
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<div class="card-body">
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<div class="form-group">
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<input type="checkbox" id="pwd_enforce_characters"
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name="pwd_enforce_characters" class="checkbox"
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{% if SETTING.get('pwd_enforce_characters') %}checked{% endif %}>
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<label for="pwd_enforce_characters">
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Enforce Character Requirements
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</label>
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</div>
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<div class="form-group">
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<label for="pwd_min_len">Minimum Password Length</label>
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<input type="text" class="form-control"
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name="pwd_min_len" id="pwd_min_len"
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data-error="Please enter a minimum password length"
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value="{{ SETTING.get('pwd_min_len') }}">
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</div>
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<div class="form-group">
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<label for="pwd_min_lowercase">Minimum Lowercase Characters</label>
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<input type="text" class="form-control"
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name="pwd_min_lowercase" id="pwd_min_lowercase"
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data-error="Please enter the minimum number of lowercase letters required"
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value="{{ SETTING.get('pwd_min_lowercase') }}">
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</div>
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<div class="form-group">
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<label for="pwd_min_uppercase">Minimum Uppercase Characters</label>
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<input type="text" class="form-control"
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name="pwd_min_uppercase" id="pwd_min_uppercase"
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data-error="Please enter the minimum number of uppercase letters required"
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value="{{ SETTING.get('pwd_min_uppercase') }}">
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</div>
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<div class="form-group">
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<label for="pwd_min_digits">Minimum Digit Characters</label>
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<input type="text" class="form-control"
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name="pwd_min_digits" id="pwd_min_digits"
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data-error="Please enter the minimum number of digits required"
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value="{{ SETTING.get('pwd_min_digits') }}">
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</div>
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<div class="form-group">
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<label for="pwd_min_special">Minimum Special Characters</label>
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<input type="text" class="form-control"
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name="pwd_min_special" id="pwd_min_special"
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data-error="Please enter the minimum number of special characters required"
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value="{{ SETTING.get('pwd_min_special') }}">
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</div>
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<div class="form-group">
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<input type="checkbox" id="pwd_enforce_complexity"
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name="pwd_enforce_complexity" class="checkbox"
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{% if SETTING.get('pwd_enforce_complexity') %}checked{% endif %}>
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<label for="pwd_enforce_complexity">
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Enforce Complexity Requirement
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</label>
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</div>
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<div class="form-group">
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<label for="pwd_min_complexity">Minimum Complexity (zxcvbn)</label>
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<input type="text" class="form-control"
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name="pwd_min_complexity" id="pwd_min_complexity"
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data-error="Please enter the minimum password complexity required"
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value="{{ SETTING.get('pwd_min_complexity') }}">
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</div>
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</div>
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</fieldset>
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<!-- /.card-body -->
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<div class="card-footer">
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<button type="submit" class="btn btn-primary"
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@ -117,7 +182,49 @@
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</div>
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<!-- /.card-header -->
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<div class="card-body">
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<p>Fill in all the fields in the left form.</p>
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<dl class="dl-horizontal">
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<dt>Local DB Authentication</dt>
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<dd>Enable/disable local database authentication.</dd>
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<dt>Allow Users to Signup</dt>
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<dd>Allow users to signup. This requires local database authentication
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to be enabled.</dd>
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<legend>PASSWORD REQUIREMENTS</legend>
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This section allows you to customize your local DB password requirements
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and ensure that when users change their password or signup they are
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picking strong passwords.
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<br/>
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Setting any entry field to a blank value will revert it back to default.
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<dt>Enforce Character Requirements</dt>
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<dd>This option will enforce the character type requirements for
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passwords.
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<ul>
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<li>Minimum Lowercase Characters - Minimum number of lowercase
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characters required to appear in the password.</li>
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<li>Minimum Uppercase Characters - Minimum number of uppercase
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characters required to appear in the password.</li>
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<li>Minimum Digit Characters - Minimum number of digits
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required to appear in the password. Digits include
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1234567890.</li>
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<li>Minimum Special Characters - Minimum number of special
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characters required to appear in the password. Special
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characters include
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`!@#$%^&*()_-=+[]\{}|;:",.></?.</li>
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</ul>
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</dd>
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<dt>Enforce Complexity Requirement</dt>
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<dd>Enable the enforcement of complex passwords. We currently use
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<a href="https://github.com/dropbox/zxcvbn">zxcvbn</a> for
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determining this.
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<ul>
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<li>Minimum Complexity - The default value of the log factor
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is 11 as it is considered secure. More information about
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the this can be found at
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<a href="https://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_wheeler.pdf">here</a>
|
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</li>
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</ul>
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</dd>
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</dl>
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</div>
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<!-- /.card-body -->
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</div>
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@ -34,13 +34,13 @@
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<div class="nav-tabs-custom mb-2">
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<ul class="nav nav-tabs" role="tablist">
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<li class="nav-item">
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<a class="nav-link active" href="#tabs-personal" data-toggle="tab">
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<a class="nav-link {{ 'active' if not error_messages else '' }}" href="#tabs-personal" data-toggle="tab">
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Personal Info
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</a>
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</li>
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{% if session['authentication_type'] == 'LOCAL' %}
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<li class="nav-item">
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<a class="nav-link" href="#tabs-password" data-toggle="tab">
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<a class="nav-link {{ 'active' if 'password' in error_messages else '' }}" href="#tabs-password" data-toggle="tab">
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Change Password
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</a>
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</li>
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@ -57,7 +57,8 @@
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<!-- /.nav-tabs-custom -->
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<div class="tab-content">
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<div class="tab-pane fade show active" id="tabs-personal">
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<div class="tab-pane fade {{ 'show active' if not error_messages else '' }}"
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id="tabs-personal">
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<form role="form" method="post" action="{{ user_profile }}">
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<input type="hidden" name="_csrf_token" value="{{ csrf_token() }}">
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<div class="form-group">
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@ -91,7 +92,8 @@
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<!-- /.tab-pane -->
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{% if session['authentication_type'] == 'LOCAL' %}
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<div class="tab-pane fade" id="tabs-password">
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<div class="tab-pane fade {{ 'show active' if 'password' in error_messages else '' }}"
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id="tabs-password">
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{% if not current_user.password %}
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Your account password is managed via LDAP which isn't supported to
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change here.
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@ -101,8 +103,15 @@
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value="{{ csrf_token() }}">
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<div class="form-group">
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<label for="password">New Password</label>
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<input type="password" class="form-control" name="password"
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<input type="password" class="form-control {{ 'is-invalid' if 'password' in error_messages else '' }}"
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name="password"
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id="newpassword">
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{% if 'password' in error_messages %}
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<div class="invalid-feedback">
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<i class="fas fa-exclamation-triangle"></i>
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{{ error_messages['password'] }}
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</div>
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{% endif %}
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</div>
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<div class="form-group">
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<label for="rpassword">Re-type New Password</label>
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@ -43,4 +43,5 @@ webcolors==1.12
|
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werkzeug==2.1.2
|
||||
zipp==3.11.0
|
||||
rcssmin==1.1.1
|
||||
zxcvbn==4.4.28
|
||||
psycopg2==2.9.5
|
||||
Loading…
Reference in New Issue
Block a user