Researcher releases PoC code for critical Atlassian Crowd RCE flaw

A researcher has released proof-of-concept code for a critical code execution vulnerability (CVE-2019-11580) in Atlassian Crowd, a centralized identity management solution providing single sign-on and user identity. Atlassian plugged the hole in late M… Continue reading Researcher releases PoC code for critical Atlassian Crowd RCE flaw

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 client_secret passed to Auth s… Continue reading Which grant type : Implicit or Auth code (with No secret key) is suitable for Single Page Application(SPA)?

Apple debuts privacy-minded “Sign in with Apple” SSO

Among the many news shared during Apple’s annual developer conference there’s one that stands out: the introduction of “Sign in with Apple”. About the “Sign in with Apple” feature Apple’s new single sign-on (SS… Continue reading Apple debuts privacy-minded “Sign in with Apple” SSO

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.com. I only have direct … Continue reading How to authorize access to a resource when requested with CORS and validate the origin?

What Is Single Sign-On (SSO)?

The question “what is single sign-on?” is one we get asked a lot. To understand this solution, consider an analogy: “Imagine going to the mall, and at each store you must register with the store for your first purchase. Then, every time aft… Continue reading What Is Single Sign-On (SSO)?