Single Sign-On is when a user can use the same set of authentication credentials to access multiple different services.

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3
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1answer
385 views

How do you evaluate and audit Central Authentication Service (CAS)?

This is in reference to Jasig's CAS software and I'm looking for a checklist to audit the state of security of a CAS implementation. While the Jasig site has a lot of documentation and their mailing ...
3
votes
2answers
134 views

Can a good SSO protocol be built around a server signing tickets rather than validating them on demand?

CAS and its alternatives all seem to require a flow like this when one service is acting as a proxy for a user when accessing a back-end service: Service A makes a request to Service B on behalf of a ...
0
votes
1answer
367 views

How can I ensure privacy when outsourcing authentication to an IdP (Identity Provider)

I need to outsource authentication to an IdP (Identity Provider) but I don't want that IdP to know of the calling site. The two major issues are the callback URL and the referer header. Is there any ...
2
votes
2answers
2k views

Is this SSO design secure?

We're working on an SSO implementation that would be used accross domains. I realize there are proven working models out there like CAS for this but I'm toying with a different approach and I want to ...
14
votes
4answers
5k views

How do the STS token formats compare to each other SAML vs SWT vs JWT?

I'm configuring an Azure ACS STS and would like to know if there is any impact on security based on the following token formats or how they are used. The answers to this questions should apply to ...
0
votes
1answer
2k views

How do I change the certificate of a Shibboleth service provider?

How do I change the certificate of a Shibboleth service provider? I have an existing identity provider (IDP) and service provider (SP) and I need to replace the certificate with a Verisign signed cert....
3
votes
1answer
1k views

Are there any anonymous OpenID providers similar to Gawker's “burner”?

Gwaker has an anonymous commenting system called Burner. It is offered as an alternative to Facebook, Twitter and Google. What's the difference between Burner and creating a throwaway Google , ...
1
vote
1answer
586 views

How can a SAML Relying Party redirect to one of two IDPs?

We need to support the following Authentication flows User 1 logs into Salesforce using Salesforce Credentials User 2 logs into Salesforce using Arcot +Ping + Siteminder credentials User 2 logs into ...
1
vote
1answer
3k views

What are the potential vulnerabilities in a SAML-based SSO approach?

What level of access would an attacker need to obtain to compromise a SAML-based SSO system? Would stealing the private key used to sign SAML requests be enough? What if an attacker had root on the ...
4
votes
2answers
571 views

Using intranet SSO to access sites hosted on public cloud

We are thinking to move some of our intranet sites to public cloud. Is there any way to keep using company SSO to authorize access to those sites from the company intranet?
0
votes
2answers
959 views

Single sign-on models for a mixed environment

I'm not entirely sure if this is the right site for this, but I'll give it a shot. Basically, I'm looking into different ways of setting up a single sign-on service for an existing corporate ...
6
votes
4answers
8k views

Can Central Authentication Service (CAS) do authorization?

I have a few web applications that I'm trying to tie in via CAS, but I'm a little confused about the authorization, which I read CAS isn't supposed to do. Yet, I see something like groups, but don't ...
6
votes
2answers
2k views

How does openid implement Single sign on?

I'm wondering which security model is behind the OpenID. Is it anything like kerberos?
8
votes
2answers
408 views

Is the argument really over on SSO?

I got shot down on ServerFault recently for suggesting that SSO can be less secure than having different credentials for each service. What are the arguments against SSO?
19
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7answers
2k views

Appropriate password requirements for a login (OpenID) service/provider/delegate/thing

This is with regards* to Stack Exchange's upcoming OpenID provider (and in particular, discussion about password requirements). Currently, password requirements are: Must contain 3 of: lower case ...
1
vote
1answer
534 views

OpenSSO and Basic Auth together

Our project is moving towards OpenSSO, but we have some CGIs that are accessed via web services. For example, one CGI locates files on the server and supplies them to the client. I understand that ...
19
votes
6answers
15k views

How to set up a single sign-on for multiple domains?

I've set up a single-sign-on for two of our sites that live on the same domain: a.domain.com and b.domain.com I did it through cookies, but they are domain-dependant. And - as it is written in the ...