My app is using email addresses as unique identifiers for users. It also allows users to log in via social connections, i.e. Google Oauth. I want to disable password-based login when a user logs in with Google. Is it possible to somehow configure this in Auth0? I'd need to do it on both the login page, as well as on Auth0's authorization server.
(Note that I want to do this dynamically, on a per-user basis, rather than globally disable database connections.)
Or, more generally, is there a generalized way to control "which methods of auth should be available for a specific user"?
Related
I was wondering if it was possible to login to different salesforce environments (Sandboxes, scratch orgs, production env, etc) using either Apex/LWC/Aura (or anything that I can make a quick action to). For example, I have a list of credential records, with the username and password, and I would like to have a login button that creates a separate tab that can automatically redirect to that specific instance and log in.
Currently, if a user wants to login to a particular instance, they have to either go to test.salesforce.com or login.salesforce.com (depending on if it's a sandbox or production) manually, then copy the password and username in. The ideal situation is to have a login button that can do this automatically from the record page where the username and password is located.
I think previously this could have been accomplished through the URL, but salesforce has recently patched this out due to security concerns. Is there another good way to do this?
It sounds like you're trying to solve two specific challenges:
Your users need to be able to manage very high volume of credentials.
You need authentication to survive password resets.
The clear solution, in my mind, is to use the OAuth Web Server flow to execute initial authentication and then store the refresh token that results from this flow. This token survives password resets, and may be used more or less indefinitely to create new access tokens - which users can then use to log in via a frontdoor link.
There's an out-of-the-box tool that does this already: the Salesforce CLI. You can authenticate orgs to its toolchain, name them, and subsequently access them with a single command (sfdx force:org:open). Users that prefer a GUI can access the exact same functions in Visual Studio Code.
If you're hellbent on doing custom development to handle this use case, you can, but you need to be very careful of the security implications. As one example, you could implement an LWC + Apex solution that executed the relevant OAuth flows against orgs and stored the resulting data in an sObject, then allowing users to click a button to generate a new access token and do a one-click login.
But... if you do this, you're storing highly sensitive credentials in an sObject, which can be accessed by your system administrators and potentially other users who have relevant permissions. That data could be exfiltrated from your Salesforce instance by an attacker and misused. There's all kinds of risks involved in storing that kind of credential, especially if any of them unlock orgs that contain PII or customer data.
One of the two best answers for that (the other one being 'pure Apex' and relatively more complex) is using Flow.
"You can use a login flow to customize the login experience and integrate business processes with Salesforce authentication. Common use cases include collecting and updating user data at login, configuring multi-factor authentication, or integrating third-party strong authentication methods.enter image description here"
"You can use login flows to interact with external third-party authentication providers by using an API.
For example, Yubico offers strong authentication using a physical security key called a YubiKey. Yubico also provides an example Apex library and login flow on GitHub. The library supplies Apex classes for validating YubiKey one-time passwords (OTPs). The classes allow Salesforce users to use a YubiKey as a second authentication factor at login. For more information, see yubikey-salesforce-client.
You can also implement a third-party SMS or voice delivery service, like Twilio or TeleSign, to implement an SMS-based multi-factor authentication and identity verification flow. For more information, see Deploy Third-Party SMS-Based Multi-Factor Authentication."
learn more here: enter link description here
I am reading about oauth2 now, and trying to understand its purpose. From all the resouces I read, it seems like oauth2 is only used when a webapp (say a game app) that has some users and the app wants to access a user's Facebook or Google data (some sort of data such as name or email, etc). This part is clear to me. However, things that remain unclear to me are the following:
For example: If I have a webapp, and I want the users of my webapp to log into the webapp with their login and passwords (just like how you do it with gmail) without using any third party. Does oauth2 also serve this type of authorization?
I have seen webapps, where they just let users sign up with IDs and passwords, then they salt the passwords and store the salts in the database. So when a user logs in later, they salt the password the user entered, and compare this salt to the salt in the database (created during the signup). If equal, then the user logged in. This does NOT seem like oath at all to me. So if this is not oauth, what standard is this? And are there any other standards for "direct login" like this?
Assume that I want to allow users to sign up and log in to my website, but let them log in via a third party (like Facebook or Google). This is just for authorization purposes and assume that my app has no plan to post on their facebook or request their facebook data except that I may want to use their facebook email as the user ID for my webapp. Does oauth2 serve this type of authorization?
Sorry for the naive questions, because I only read about oauth recently.
For sign-up/login without 3rd-party, as Kevin pointed out, each programming/web framework usually comes with a popular library that once, it will generate all the sign-up/login pages, database tables, flow, etc., for you. The only thing you then do is call a method provided by the library that returns the current signed in user, in your backend code when you need to figure out who the user is.
Using salted password scheme is NOT related you OAuth2 at all as you pointed out. It is a widely used scheme for local authentication because it has many benefits but I will just highlight 2 here:
a. A password when transmitted from user to server for authentication over the Internet is not sent in cleartext but rather in hashed format. Thus even if it were eavesdropped, the password will not be divulged.
b. Since each password is salted, even 2 same passwords will not have the same hash because each have different salt. Thus even if a password hash was eavesdropped, it cannot be reused at another service that the user uses the same password because the other service expected a password hash generated with a different salt.
OAuth2 is all about Authorization (asking a user for permission to perform something on her behalf at another web service, e.g., ask a user for permission to access her email address registered on Facebook). Using it for Authentication can be insecure (for OAuth2 implicit flow). Why? The end result of OAuth2 is an access key associated with a permission, e.g., 'permission to access email address'. When you use the OAuth2 result (access key) for authentication, it means that you are making the assumption that 'permission to access email address' means the user successfully authenticated with Facebook, which she did, so it seems fine. However, imagine if another site also uses OAuth2 for authentication as you did; if it receives an access key with 'permission to access email address' it will assume that you have authenticated with Facebook so it will grant you access to the account belonging to the email address. You could actually use the access key you got from a user, and login as her in the other site, and vice versa.
To use OAuth2 for authentication, you need to use it with OpenID Connect (OIDC), because the end result of OAuth2-OIDC contains an id_token with the aud (audience) field identifying who the access key is for (https://openid.net/specs/openid-connect-core-1_0.html#IDToken), which prevents the access key from being reused where it is not intended. The full explanation with easy-to-understand diagrams is here: https://www.slideshare.net/KhorSoonHin/the-many-flavors-of-oauth/36?src=clipshare
Another very simple but perhaps unnerving to a security-conscious way to do use OAuth2 for login is to use the Resource Owner Password Credential, where your website acts as a middle-man between the user, and OAuth2 provider (Facebook).
Show 'Login with Facebook' button
When user clicks on button, prompt user for Facebook username/password
Use the username/password to login to Facebook to confirm authentication and get access token.
If you don't have to time to read in-depth about OAuth2, perhaps this side-by-side comparison of all the OAuth2 flow can help.
This is courtesy of https://blog.oauth.io/introduction-oauth2-flow-diagrams/
You could use OAuth for local logins like this, but you don't have to. It might be easier, depending on available libraries, and it might make sense if you anticipate making your service available to third-parties in the future. For many sites, though, using OAuth for local logins would be overkill.
Standards are most useful when different actors need to speak a common language so they can interoperate. For local logins you don't need a standard because you're not interacting with any third parties. Many web frameworks include their own variation on the same basic flow.
I think you're asking whether OAuth makes sense for authentication (establishing identity) when you don't actually need any authorization (permission to access third-party resources). It can indeed be used that way, but lots of people will warn against it since it wasn't designed for that and has some security weaknesses in that context. See, for example, Common pitfalls for authentication using OAuth.
This is all with v8.2, with plan to migrate to 9 at a later date
Here's what we're looking into. To access one folder, users would need have AD authentication, for two other folders, user would need to authentication via Kentico's user management. The rest of the site would be wide open.
We also need to ensure any bookmarked URLs send the user to the correct authentication method, if applicable.
I'm digging further in to the documentation for this too.
Yes this can happen. You'd need to enable/setup Mixed Mode Authentication within Kentico.
Secondly, for ensuring proper access to specific nodes in your site, I'd default to whatever more pages need; either require authentication or not. So if the majority of your pages required authentication, then on the master page level in the Properties>Security, set Access to require authentication. This will then propagate through the rest of the site.
For each of the nodes which are "public" simply go to the parent node Properties>Security and set Access to not require authentication.
Everything I'm reading shows that in order for an application to use onedrive, it has to do the oauth2 thing to get credentials. But what if you're a batch process and don't have a web interface for your users.
Google's API has a special type of account called a service account where once you set it up, you can control access to everything from that one account, no need to interact with users. Does such a thing exist for onedrive?
App-only authentication doesn't require the user be prompted for credentials but it also isn't supported in 100% of scenarios. For example, the APIs need a user principle for creating special folders and resolving a user's personal site. Also, it is only supported for OneDrive for Business, not Consumer. Consumer always requires the user be prompted for initial authentication.
Another option would be to spin up a web service of some sort that handles initial user authentication, ie. a sign up page. With that, you can retrieve a refresh token for offline authentication and store it for the user. Every authentication from then on can be done using the refresh tokens, which doesn't require a user prompt.
I finally found this. It's the same basic idea as google's service account, but I think it's harder to use. But at least the concept is supported.
http://blogs.msdn.com/b/exchangedev/archive/2015/01/21/building-demon-or-service-apps-with-office-365-mail-calendar-and-contacts-apis-oauth2-client-credential-flow.aspx
We are developing an SPA - full client base javascript application and need to authenticate our users to get access to the internals.
As I found from the search we can outsource our authentication mechanism and use Google accounts for that. I learned from this site
https://developers.google.com/accounts/docs/OAuth2Login -
How to deal with Google API and mechanism for authentication.
In the short word, we need:
send request to google url with params to ask user to allow SPA use their personal data
in case of success we get a token from Google
we may use this token to get access to API we were asked and work with it.
This is described well and I understand it and have some JS code to make it happen.
What I do not understand.
I have an application with it's private data. I want use user's e-mail as the login, or user id (doesn't matter how to call it) to access app's internals, such as user's created tasks, user's profile, etc. So, to display user's created tasks in my SPA I need query database with the user's e-mail.
I imagine the next scenario:
user click Login with Google button
we obtain an token - this means user was authenticated successfully
we persist user and his e-mail to work with SPA
when user click Logout we clear all access data
Where should I persist this data?
In case of Forms Authentication I understand that we pass login/password to server and if they match the database we create Forms Ticket and store it in cookie.
Is there any similar case with Google's auth? If I'll store user's email in cookie I think that's not very good from security reason. If I'll save a token - I'm not sure why I need it and how to use it in my SPA, I'm not using any Google API after authentication.
Do you have any example case how do we build our process in similar cases?
Thank you.
If all you need is the user's email address, then you would be better off using OpenID instead of OAuth. OAuth provides access to a user's account and services, scoped to a specific resource or set of resources. OpendID is designed just for logging into a third-party service. You can then extract the user's ID and email address from the OpenID login. Note: The ID will always be sent but the email address has to be explicitly requested during authentication.
Google also supports a hybrid OpenID+OAuth scheme that lets you piggyback OAuth requests on top of an OpenID login if there is some resource you need to authenticate to. Take a look at the authentication document to get an idea of how both protocols work and which is better for your scenario.
Once you have the email address returned, you probably shouldn't persist it in a cookie. The normally recommended way to handle it is to add it as a session parameter. That way only the session cookie is stored on the client, and the server can use it find the values it needs. This answer has a good explanation of the differences and when you want to use sessions versus cookies.