Collaborate Disseminate
I’m trying to mitigate postMessage exploitation like. information leakage, xss etc.. since I can’t solve this with origin (because origin might be problematic).
I might receive/send postMessage to different origins, sometimes it might be e… Continue reading How I can mitigate postMessage exploitation? [closed]
I am modifying a javascript application running on an apache web server. This runs on a windows server inside of our corporate network which I am referring to as "local server" in the comments below. The javascript makes ajax cal… Continue reading making CORS request to 3rd party API
I was completing an assessment for a client and discovered that web application implemented a Permissive CORS policy which allowed for a Arbitrary Origin Trust.
Request:
Host: [REDACTED]
User-agent: blah
Accept: */*
Accept Language: en-US,… Continue reading Permissive CORS – Arbitrary Origin Trust, Remedial Action?
Assume an Angular SPA application on www.example.com that works invoking an API over that same domain www.example.com/api/…
The Angular app gets a session cookie and sends it in each API call.
The usual CSRF attack would try to execute a… Continue reading Is server side CORS protection enough to mitigate CSRF attacks against stateless APIs?
Very simply we have a ton of websites at our company behind SSO.
I am having a hard time figuring out what security issues there are if we open cross-site sharing between these sites but wanted to get a broader view. This is really a res… Continue reading Are there security issues around controlled cross site sharing behind SSO?
I have a web application which uses an external authentication server for obtaining a session. When a client tries to login, the browser is making requests towards the external authentication server until a cookie is obtained. Note that th… Continue reading Protecting an external authentication server against CSRF
A little background… As I stood in front of a class of developers trying to explain cross-origin resource sharing (CORS), I knew I wasn’t conveying it well enough for a significant subset of the group. It was Autumn 2017 (not my password at the time, b… Continue reading The Death and Rebirth of Musashi.js OR How I turned personal failure into better teaching tools.
How can the CSRF happen if browsers do not allow cross-origin requests by default?
Here is a brief CSRF overview, which is relevant for the question. CSRF (i.e. cross-site request forgery) is a type of attack. For the attack to happen, the… Continue reading How can the CSRF happen if browsers do not allow cross-origin requests by default? [duplicate]
CORS (Cross-Origin Resource Sharing) enables resource sharing that pulls data from a lot of different sources. Like any relatively open aspect of the internet, it can be a risk. Learn how to test your web applications to create a secure CORS policy. Origins and Key Concepts CORS began as a way to make application resource […]
The post CORS: How to Use and Secure a CORS Policy with Origin appeared first on Security Intelligence.
Continue reading CORS: How to Use and Secure a CORS Policy with Origin
Lets say I have a site at myapp.com that talks to the api at myapi.com. For that to work I have to turn on CORS. I want to do it like that:
Access-Control-Allow-Origin: *
and my API authentication is performed via a custom Authorize header… Continue reading Is it safe to add "Access-Control-Allow-Origin:*" to an API endpoint with custom authentication via header?