session prediction

1. What is Session prediction?
2. What is session fixation vulnerability?
3. What is weak session ID attack?
4. What does an attacker do when they brute force a session ID?
5. Why is session token randomness important?
6. What is session hijacking in cyber security?
7. What do you suggest protect from session fixation attack?
8. What type of attack uses a session identifier?
9. When would an attacker want to begin a session hijacking attack if session fixation is being used?
10. What is forbidden attack?
11. What are session IDs used for?
12. Can session cookies be hijacked?

What is Session prediction?

Session or Credential Prediction (aka Session Hijacking) is a method of hijacking or impersonating an authorized website/application user. With Session/Credential Prediction, the attacker deduces or guesses the unique value that identifies a particular session or user.

What is session fixation vulnerability?

The session fixation attack is a class of Session Hijacking, which steals the established session between the client and the Web Server after the user logs in. Instead, the Session Fixation attack fixes an established session on the victim's browser, so the attack starts before the user logs in.

What is weak session ID attack?

Weak session IDs can expose your users to having their session hijacked. If your session IDs are picked from a small range of values, an attacker only needs to probe randomly chosen session IDs until they find a match.

What does an attacker do when they brute force a session ID?

There are several ways an attacker can get a SessionID:

1, brute force: try a variety of Session ID, until the crack; 2. Prediction: If the Session ID is generated in a non-random manner, then it is possible to calculate it; 3, steal: use network sniffing, XSS attack and other methods to obtain.

Why is session token randomness important?

The randomness

These checklist emphasize that session identifier must be unpredictable and random enough to prevent guessing where an attacker is able to obtain the identifier of a valid session. ... For a value to be cryptographically secure, the attacker must not distinguish it from the truly random number.

What is session hijacking in cyber security?

Session hijacking is an attack where a user session is taken over by an attacker. ... In both cases, after the user is authenticated on the server, the attacker can take over (hijack) the session by using the same session ID for their own browser session.

What do you suggest protect from session fixation attack?

To defend against session fixation, ensure your Web application developers code their applications so they assign a different session cookie immediately after a user authenticates to the application, and also verify they do not include the cookie value in the URL.

What type of attack uses a session identifier?

Session Fixation is a type of attack on web application users where an attacker is able to trick a victim into using a Session ID which is previously known to them.

When would an attacker want to begin a session hijacking attack if session fixation is being used?

When would an attacker want to begin a session hijacking attack if session fixation is being used? You would like to attempt a man-in-the-middle attack to take control of an existing session.

What is forbidden attack?

been found to be vulnerable to what's called the Forbidden attack. Hackers can inject malicious code into users' browsers, using a flaw stemming from improper TLS implementation. ... The Forbidden attack becomes possible when a nonce is reused to establish an HTTPS session, for a server using AES-GCM for encryption.

What are session IDs used for?

As session IDs are often used to identify a user that has logged into a website, they can be used by an attacker to hijack the session and obtain potential privileges. A session ID is usually a randomly generated string to decrease the probability of obtaining a valid one by means of a brute-force search.

Can session cookies be hijacked?

Because this kind of attack requires the attacker to have knowledge of your session cookie, it's also sometimes referred to as cookie hijacking. It's one of the most popular methods for attacking client authentication on the web. A hacker needs to know the victim's session ID to carry out session hijacking.