Description
Disallow WordPress and WooCommerce users using pwned passwords.
Goal
Spoiler Alert: User passwords never leave your server, not even in hashed form.
Although reusing passwords is solely users› fault but when evil attackers brute forced users› passwords, and stole all their personal information or spent users› hard earn money through your site. Those lazy users blame you, the site owner/developer.
When processing requests to establish and change memorized secrets, verifiers SHALL compare the prospective secrets against a list that contains values known to be commonly-used, expected, or compromised. For example,…
- Passwords obtained from previous breach corpuses
This plugin’s solely purpose is to disallow WordPress and WooCommerce users reusing passwords listed in Have I Been Pwned database.
Usage
Activate and forget.
This plugin intercepts when:
- creating new users on
/wp-admin/user-new.php
- changing other users› passwords on
/wp-admin/user-edit.php
- changing your password on
/wp-admin/profile.php
- new user registration on
/wp-login.php?action=rp
Additional interceptions if WooCommerce is installed:
WC_Form_Handler::process_reset_password
on Home » My account » Lost passwordWC_Form_Handler::save_account_details
on Home » My account » Account detailsWC_Form_Handler::process_registration
on Home » My accountWC_Checkout::validate_checkout
on Home » Checkout
Explain It Like I’m Five
- Troy Hunt, a well-kown security expert, collected 6,493,641,194 (and counting) pwned passwords from previous security breaches
- Pwned passwords stored as SHA-1 hashes on haveibeenpwned.com
- Whenever WordPress / WooCommerce users attempt to change their passwords, this plugin hashes the user password
- Take the first 5 characters from the hash
- Ask haveibeenpwned.com for all pwned passwords with the same first 5 hash characters
- Check how many times the user password appears on the have I been pwned database
- Disallow the password change if it has been pwned
Users aged older than five could learn more from:
- Have I Been Pwned’s FAQs
- Why SHA-1 was chosen in the Pwned Passwords
- I’ve [Troy Hunt] Just Launched «Pwned Passwords» V2 With Half a Billion Passwords for Download
- Validating Leaked Passwords with k-Anonymity
For Developers
Fork the plugin on GitHub.
Screenshots
FAQ
- What are the minimum requirements?
-
- PHP v7.0
- WordPress v4.9.8
- (Optional) WooCommerce v3.4.4
- Did you just send all the passwords to someone else?
-
No. User passwords never leave your server, not even in hashed form.
- How do you compare user passwords with the 6,493,641,194 pwned ones?
-
Curious users can learn more from:
- I’ve Just Launched «Pwned Passwords» V2 With Half a Billion Passwords for Download
- Validating Leaked Passwords with k-Anonymity
Paranoia users should check the plugin implementation.
- What to do if I don’t trust haveibeenpwned.com?
-
Troy Hunt is a well-kown security expert. You should trust him more than me (the plugin author).
Anyways, you can replace the default API client with yours:<?php use Itineris\DisallowPwnedPasswords\HaveIBeenPwned\ClientInterface; use League\Container\Container; class YourCustomClient implements ClientInterface { // Your implementation. } add_action('i_dpp_register', function (Container $container): void { $container->add(ClientInterface::class, YourCustomClient::class); });
This plugin uses league/container. Learn more from its documents.
- What to do if I don’t trust the plugin author?
-
Good question! You shouldn’t blindly trust any random security guide/plugin from the scary internet – including this one!
Review the plugin implementation.
- I have installed this plugin. Does it mean my WordPress site is *unhackable*?
-
No website is unhackable.
To have a secure WordPress site, you have to keep all these up-to-date:
- WordPress core
- PHP
- this plugin
- all other WordPress themes and plugins
- everything on the server
- other security practices
- your mindset
Strongly recommended:
- WP Password Argon Two – Securely store WordPress user passwords in database with Argon2i hashing and SHA-512 HMAC using PHP’s native functions
- WP Cloudflare Guard – Connecting WordPress with Cloudflare firewall, protect your WordPress site at DNS level. Automatically create firewall rules to block dangerous IPs
- Two-Factor
- wp-password-bcrypt
- Can strong passwords been pwned?
-
Yes. Example:
- How to disable WooCommerce password strength meter?
-
For testing only, use at your own risk!
add_action('wp_print_scripts', function () { wp_dequeue_script('wc-password-strength-meter'); }, 10000);
- Will you add support for older PHP versions?
-
Never! This plugin will only works on actively supported PHP versions.
Don’t use it on end of life or security fixes only PHP versions.
Note: Current version supports PHP 7.0 because wordpress.org svn pre-commit hook rejects PHP 7.1+ syntax. However, you should not use PHP 7.0 because it has reached end of life since 10 January 2019.
- It looks awesome. Where can I find some more goodies like this?
-
- Articles on Itineris› blog
- More projects on Itineris› GitHub profile
- More plugins on Itineris and TangRufus wp.org profiles
- Follow @itineris_ltd and @TangRufus on Twitter
- Hire Itineris to build your next awesome site
- Besides wp.org, where can I give a ★★★★★ review?
-
Thanks! Glad you like it. It’s important to let my boss knows somebody is using this project. Please consider:
- give ★★★★★ reviews on wp.org
- tweet something good with mentioning @itineris_ltd and @TangRufus
- ️️★ star this Github repo
- watch this Github repo
- write blog posts
- submit pull requests
- hire Itineris
- Where to report security related issues?
-
If you discover any security related issues, please email hello@itineris.co.uk instead of using the issue tracker.
Reviews
Contributors & Developers
“Disallow Pwned Password” is open source software. The following people have contributed to this plugin.
Contributors“Disallow Pwned Password” has been translated into 1 locale. Thank you to the translators for their contributions.
Translate “Disallow Pwned Password” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
Please see CHANGELOG for more information on what has changed recently.