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Where should session IDs be stored?
cookies
Session IDs can be stored as cookies locally at the client end. When a request is made to the server, the server transmits the cookie containing the session ID. The server has stored the session ID and associated information from the last session and makes it available to the client if the session ID matches.
What should I use as session ID?
The session ID can be stored as a cookie, form field, or URL (Uniform Resource Locator). Some Web servers generate session IDs by simply incrementing static numbers.
3 Answers. Storing the hashed password as a cookie is very nasty vulnerability and is an OWASP Violation. The whole point in hashing a password is you are forcing the attacker to break the hash in order to login.
Why you should not use cookies?
Why Cookies Can Be Dangerous. Since the data in cookies doesn’t change, cookies themselves aren’t harmful. They can’t infect computers with viruses or other malware. However, some cyberattacks can hijack cookies and enable access to your browsing sessions.
Can session ID be guessed?
But what about guessing another session id? You are totally right, if you can guess another valid id, you will be using that session, effectively impersonating its owner. After login, the session id is the only secret used by the user, equivalent to the userid+password for the session.
Why you should not use localStorage?
If an attacker can run JavaScript on your website, they can retrieve all the data you’ve stored in local storage and send it off to their own domain. This means anything sensitive you’ve got in local storage (like a user’s session data) can be compromised.
How do I store session data on a server securely?
Encrypt your session IDs and session data in the database, using a key set in a config file on the server somewhere. The benefit of this is that the attacker would need access to both the database (e.g. via SQL injection) and the filesystem at the same time in order to decrypt the session IDs and session data.
How is the session id sent securely to the client?
Once the user is authenticated, the server creates the Session ID and sends it to the client (user) in the form of a cookie. This cookie is then subsequently used in requests the client sends to the server to identify himself among other users.
Can a session ID be decrypted without a certificate?
They can not decrypt data because the connection between client and server is secured by a verified third party.so HTTPS without verified certificate means server and user can not make sure that session ID is not sniffed.
How to encrypt session data on a server?
Encrypt session IDs and data using the database’s inbuilt encryption routines. This protects you against cases where a database backup is compromised, but won’t protect you against disk theft or an attacker with SQL access. Encrypt your session IDs and session data in the database, using a key set in a config file on the server somewhere.