Contributing

How secure is WebSocket?

How secure is WebSocket?

WSS is secure, so it prevents things like man-in-the-middle attacks. A secure transport prevents many attacks from the start. In conclusion, WebSockets aren’t your standard socket implementation. WebSockets are versatile, the established connection is always open, and messages can be sent and received continuously.

How do I authenticate a WebSocket?

WebSocket Token-Based Authentication

1. Authentication in the WebSocket protocol is not as straightforward as some other communication protocols.
2. Requests to authenticate are made to the HTTP endpoint /authenticate/token with the internal authentication token securely passed in the header of the request.

Can WebSocket be hacked?

Some WebSockets security vulnerabilities arise when an attacker makes a cross-domain WebSocket connection from a web site that the attacker controls. This is known as a cross-site WebSocket hijacking attack, and it involves exploiting a cross-site request forgery (CSRF) vulnerability on a WebSocket handshake.

How do I secure my WebSocket endpoint?

How to secure a WebSocket endpoint in Java EE?

1. setup User authentification (web.xml) – done.
2. enforce SSL communication (web.xml) – done.
3. secure the websocket connection with a token (limited lifetime)

Are cookies sent with WebSocket?

All webSocket connections start with an HTTP request (with an upgrade header on it) and the cookies for the domain you are connecting to will be sent with that initial HTTP request to open the webSocket.

What is WebSocket API?

The WebSocket API is an advanced technology that makes it possible to open a two-way interactive communication session between the user’s browser and a server. With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.

What is WebSocket hijacking?

Cross-site WebSocket hijacking (also known as cross-origin WebSocket hijacking) involves a cross-site request forgery (CSRF) vulnerability on a WebSocket handshake. An attacker can create a malicious web page on their own domain which establishes a cross-site WebSocket connection to the vulnerable application.

Can WebSockets be intercepted?

You can intercept and modify them in real-time but there is no Repeater, Scanner, or Intruder functionality for WebSockets. WebSocket interception is enabled by default in Burp and all you need to do is turn on the master interception. You’ll get intercepted WebSocket messages the same way you do for HTTP.

Is WebSocket insecure?

Like HTTPS, WSS (WebSockets over SSL/TLS) is encrypted, thus protecting against man-in-the-middle attacks. A variety of attacks against WebSockets become impossible if the transport is secured. Heroku’s SSL endpoints support WSS, and we strongly recommend that you use it.

How do I establish a secure WebSocket connection?

How to secure your WebSocket connections

1. #0: Enable CORS. WebSocket doesn’t come with CORS inbuilt.
2. #1: Implement rate limiting. Rate limiting is important.
3. #2: Restrict payload size.
4. #3: Create a solid communication protocol.
5. #4: Authenticate users before WS connection establishes.
6. #5: Use SSL over websockets.
7. Questions?

What do you need to know about WebSocket authentication?

With HTTP you have to send headers (cookies, tokens, whatever) with each request. With WebSockets you establish a connection. In the first interactions you can authenticate the client and for the remainder of the connection you know the client is authenticated.

Is it safe to use the WebSocket protocol?

The WebSocket protocol is a young technology, and brings with it some risks. Decades of experience have taught the web community some best practices around HTTP security, but the security best practices in the WebSocket world aren’t firmly established, and continue to evolve.

Is there an upgraded handshake between HTTP and WebSocket?

The upgraded handshake still occurs from HTTP to WebSocket. But, the HTTP sends the authentication information directly to WS. This can be exploited and we call this attack Cross-Site WebSocket Hijacking. Another issue with WebSockets is that they can be used over an unencrypted TCP channel.

Which is the normal mechanism for a WebSocket connection?

Only the normal mechanisms for HTTP connections are available. That includes HTTP and TLS authentication and cookies. The upgraded handshake still occurs from HTTP to WebSocket. But, the HTTP sends the authentication information directly to WS. This can be exploited and we call this attack Cross-Site WebSocket Hijacking.