Questions tagged [sso]
Single Sign-On is when a user can use the same set of authentication credentials to access multiple different services.
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28 views
SSO Log Users Out Based on IP Address
We would like to implement SAML based SSO for our organization. We do not want employees to be able to access specific accounts outsides of specific hours and IP ranges. (We do not want to setup a VPN ...
0
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1answer
30 views
Kerberos Authentication : Client authentication only
I am currently implementing a way to authenticate using Kerberos mechanism. Then only explanation have is "SSO using Kerberos".
I know technically how works Kerberos (Keytab, SPNEGO, Token, KDC, SPN)...
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1answer
30 views
Which grant type : Implicit or Auth code (with No secret key) is suitable for Single Page Application(SPA)?
I went thru multiple posts saying how implicit grant is a security risk and why auth code grant with AJAX request to Authorization server should be used after redirecting to application (without ...
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0answers
33 views
Is there a way to configure Azure AD SSO to ignore SP forceAuthn parameter?
I am trying to workaround an annoying cloud based SP initiated sign-on parameter, forceAuthn, the SP includes this in their assertion and is set to true. They do this to ensure compliance with some of ...
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1answer
56 views
How to authorize access to a resource when requested with CORS and validate the origin?
I'll try to make the explanation simple and to the point (keyword try). And if that's not sufficient, then maybe I can expand on the question.
Imagine two sites: resources.example.com and www.example....
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27 views
Single Sign On: Concept for multiple resources and login server below the same domain
I am learning about SSO right now and am trying to work out a way to authenticate a few websites under the same domain (example.com), based on the setups I read about in the internet.
I would prefer ...
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vote
3answers
225 views
Is it advisable to create a system that stores passwords?
Please bear with me, I'm a total newbie about security.
I work in a company whose main goal is to maximize profits and use free stuff as much as possible. It's effect is that we use tons of freeware ...
0
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1answer
48 views
Shibboleth SP two resources and two IDPs
I am looking for some recommendation / advice, with the following scenario:
Using apache 2.4 and Shib 2.
The setup is SP initiated.
Only one Apache web server
I am protecting two resources.
example....
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0answers
33 views
SSO using SAML 2.0/OIDC
I have a scenario in mind and I am wondering if this is, in general, a drawback to SSO using SAML 2.0/OIDC or if there are any known ways to mitigate such a scenario:
Background:
1. A user is able to ...
3
votes
1answer
83 views
SSO level of trust external identity providers
I'm wondering how much I should trust our clients and their SSO implementations. We have an identity provider set up for @our-domain.com and most users of that domain have a lot of rights in our ...
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0answers
46 views
'Fake SSO & self registration' access to a web api
I was asked to design and implement a solution that I have some security concerns about.
The customer has a web application into which users log in using their credentials.
The customer wants to add ...
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1answer
66 views
SSO authentication & authorization architecture/implemenation
We got a bunch of different services (SPAs + API GW, legacy JavaEE apps, etc.). Each of those is usually ran in multiple instances (customer specific instances). The plan is to federate them under a ...
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1answer
555 views
SAML assertion encryption and using same key for encryption as signing
I am working with a company that has product that supports SAML based authentication.
We do not facilitate for just in time federation and only accept the user identifier in assertion responses (the ...
2
votes
1answer
316 views
SHA1 signature in a SAML request
I'm currently looking at the security of a KeyCloak implementation, which again uses SAML 2.0 identity provider.
I'm not too familiar with SAML, but during the authentication, the sent SAMLRequest ...
0
votes
1answer
43 views
Do you need to validate compensating controls of a certified organization?
Our web application uses Google's G Suite Single Sign-on for authentication into our application. As part of writing documentation around compensating controls, the PCI DSS requires "Validation of ...
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0answers
35 views
SAML - when creating new users, how do I get essential fields?
My company runs a saas product; as we move into enterprise customers, we're getting more and more requests for SSO.
I understand the SAML workflow for authentication, and roughly how we'd implement ...
3
votes
1answer
211 views
Using third party authentication like google/facebook to login to a site, is there any security risk when the site is hacked?
Sites like stackoverflow, quora, and many more offers sign in from Google/Facebook. In the event that there is a data breach or the site is hacked, is there any security risk to your Google/Facebook ...
0
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1answer
63 views
Where to save the token information?
I'm currently working on an end user Windows 10 application using the Microsoft UWP platform. Within this application the end user will be able to authenticate themselves using an oauth2 SSO service.
...
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1answer
97 views
Is signature validation mandatory if encrypted assertions are sent over HTTPs in SAML 2.0?
We are using SAML Web Browser SSO Profile (SAML 2.0)
We have a SP using SAML2.0. All communication between IdP and SP is over HTTPs.
If AuthnResponse from IdP is sent over HTTPs, is it mandatory for ...
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0answers
22 views
Passing token/session values from one application to its sub application
My client currently has an existing ASP.NET web portal, which runs fine. It's hosted on their on-premise IIS Server. I will call this one the "parent application".
Now I'm working on another web ...
0
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1answer
121 views
How to setup SAML?
I am learning about SAML and already read many articles and forums but I still having confusion about setup IdP.
I am using "https://simplesamlphp.org/"
For example, I have 3 websites "example.com", "...
0
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1answer
277 views
How could this SSO implementation possibly work without browser cookies?
Our corporate Windows 7 desktop setup is now using SSO with our Confluence instance (browser-based wiki-type website) but the strangest thing is that even after logging out AND clearing the browser ...
5
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1answer
459 views
Is it secure to use CORS to implement SSO?
I implement SSO to integrate some web login mechanism to the centralized member system which is OAuth2 provider.
And currently OAuth2 authorization works well.
However, I would like to implement much ...
0
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1answer
3k views
OpenID Connect: How to maintain a single sign-on experience between multiple web clients of the same umbrella application?
I'm considering how to take a fairly complex tiered application with multiple web apps that delegate back to the same application server, and migrate it to use OIDC authentication with auth code flow. ...
2
votes
3answers
1k views
Best practice for connecting publicly available server to internal LDAP/Active Directory?
We have a public website. The site also contains the intranet (although none of the data on the intranet pages are terribly secret). Users have to login to the website using their Active Directory ...
7
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1answer
3k views
How to implement cross-domain, auto-login SSO without browser redirects for unlogged users?
I need to implement an SSO solution with the following requirements:
Cross-domain: Let's assume I have a.com, b.com and sso.com. If I become logged in through a.com, I shouldn't need to login when I ...
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vote
2answers
958 views
Where are passwords stored in SAML? On the IdP or on the SP side?
I understand the basic flow of SAML but is still unclear to me where the passwords are stored.
This image shows "APP VERIFIES SAML RESPONSE & LOGS USER IN" from onelogin looks like the password ...
3
votes
1answer
94 views
Is there a way to tell if an Android app really uses SSO(Single Sign On)?
In the last few years, SSO protocols like OAuth and SAML are becoming increasingly used to enable 3rd parties access some user's resources from some service without the need for user to provide ...
2
votes
1answer
294 views
Do we need to maintain Authentication and Authorization Logic separately? [closed]
We are using Keycloak Identity server which will take care of Authentication and Authorization for our new Multi Level Marketing Website.
There was a discussion going on within our team to maintain ...
0
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2answers
324 views
Would it be possible to store Kerberos tickets on a YubiKey?
Kerberos supports different ways (ccache types) of storing tickets, such as:
FILE
MEMORY
KEYRING
I was wondering whether it would technically be possible to also store the Ticket-granting-ticket and ...
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vote
0answers
2k views
Exception: krb_error 0 Do not have keys of types listed in default_tkt_enctypes
I am looking for your help with one Exception we are getting while setting up our Kerberos SSO. I will briefly give an overview of our setup and things we tried till now and exception we are getting:
...
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1answer
138 views
Reasons to limit password length [duplicate]
We are currently using a third party software for SSO Login in a hybrid landscape with SAP, ADFS, etc.
The users have to change their password in the client software, which is then sent to a central ...
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0answers
513 views
SSO - Client Certificate vs SAML
For me SSO is sign on where one need not type the password explicitly.
I see one of the possible way to achieve it is by using Certificates loaded in browser.
SAML/OAuth delegates the job of ...
1
vote
1answer
193 views
Any practical Single Sign-On (SSO) protocol/traffic analysis tool/method/analyzer? [closed]
I want to analyze the SSO protocol/traffic that is deployed in real environment, such as commercial website. The challenge is that most of them are black-box.
Scenario 1. I read several papers about ...
0
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1answer
225 views
Storing SAML Idp certificates in APP_Data folder
We provided a SAML2 Service Provider to our client, so they can use that to configure their Identity Provider to our Service Provider.
My questions is about our client certificate, I'm worried that ...
0
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1answer
105 views
Is it possible to analyze real Single Sign-On (SSO) messages via network sniffing?
I am thinking how to gain and analyze the information in the real SSO (request/response) messages, for some commercial SSO solutions.
The challenge is that most commercial SSO solutions are black-box ...
1
vote
1answer
150 views
SSO: Who is the idp (identity provider) for Google Apps?
If I am a user for different Google Apps. Google Apps (gmail, google calender, games logging in using Google email account, etc.) are different service providers. Who will be the identity provider (...
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1answer
136 views
Is JSON web token further secured in OpenID, and how?
I have read the details of pure JSON web token (JWT), and found that it is signed (e.g. by SHA256) but not encrypted. Hence, attack can read the sensitive information by decoding the header and ...
0
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1answer
41 views
Claims based authentication to log on to a device
Are there operating systems that allow logging on to the device (laptop, tablet etc.) using claims based authentication?
3
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1answer
589 views
Encrypting data and SSO
I provide a service in which users can store data, files, etc in an encrypted form.
The service that I have built has two applications for the user's password with which they login to my service: 1) ...
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0answers
43 views
Objectively speaking, what is the expected standard to prepare for an interview as network admin? [closed]
I have an interview middle of next month for a position as network admin.
As I understand things, clients are running Windows but some servers may be running Linux.
What is the expected standard in ...
1
vote
1answer
151 views
Is SSO/OAuth inherently broken?
The way I understand it, the whole concept of OAuth/SSO involves allowing a user the ability to have a central password they can use on a multitude of sites without compromising it because really they'...
1
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1answer
76 views
SSO Understainding Credentials and Authentication [closed]
I would like to create a SSO where my users can login to machines and wordpress (php) websites.
So far I have LDAP with Kerberos working. I can login with the same credentials to every service, ...
5
votes
1answer
5k views
Self-signed certificate for a IdP-initiated SAML SSO
We act as a Service Provider in a SAML SSO integration with our customers. During the dev and stage testing, we usually exchange metadata files and SSO endpoints.
When forming our metadata we use the ...
2
votes
1answer
231 views
Why do we need IdP when directory services already authenticate and authorize users?
Why do we need Identity Providers when enabling SSO? Why can't directory services do it itself when they already have users identity and can verify it (I'm thinking here about MS AD and the need of AD ...
3
votes
1answer
307 views
Can password based SSO be trivially compromised?
Many cloud SSO providers now offer "password based SSO" (e.g. https://docs.microsoft.com/en-us/azure/active-directory/active-directory-appssoaccess-whatis ), where, even if the SaaS you want to log in ...
0
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1answer
37 views
SSO DNS SRV lookup
I'm pen testing the page (IdpInitiatedSignOn.aspx) of a web app which uses an SSO mechanism (Active Directoy Federated Services). The username field requires a domain (e.g. company) to preface the ...
2
votes
3answers
2k views
HTTPS and encrypted cookie for session
Currently I am developing an SSO system with CAS. CAS uses an ticket granting ticket (TGT) that can be seen as the SSO-session. CAS by default will encrypt the TGT. And by default you also have HTTPS ...
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2answers
475 views
Is MD5 suitable for single sign on?
We are using an application which offers single sign to their systems which is then embedded as an iframe (i.e. the URL is visible in the source of the page)
The SSO security comes from using MD5 to ...
1
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1answer
397 views
ADFS with multiple IDP stops doing the SSO [closed]
I'm facing an issue when we enable a second IDP (add Claims Provider Trust), then we are not able to navigate between apps without stopping in the HRD (Home Realm Discovery) page.
Is there a way to ...
