If the refresh token can be stolen, then so can the access token. With such an access token, the attacker can start making API calls. To make matters even more complicated, access tokens are often self-contained JWT tokens. Such tokens contain all the information needed for the API to make security decisions.
What if someone gets hold of JWT token?
For instance, if an attacker gets hold of your JWT, they could start sending requests to the server identifying themselves as you and perform actions like making service changes, user account updates, etc. Once an attacker has your JWT, it’s game over.
Are refresh tokens secure?
A refresh token can help you balance security with usability. Since refresh tokens are typically longer-lived, you can use them to request new access tokens after the shorter-lived access tokens expire.
Should refresh token be JWT?
js of JWT with refresh token: In this case they use a uid and it’s not a JWT. When they refresh the token they send the refresh token and the user. If you implement it as a JWT, you don’t need to send the user, because it be would inside the JWT.
Can someone steal your token?
Free, Secure and Trusted Way to Authenticate Your Visitors
Remember, once a JWT (JSON Web Token) is stolen, it can be the worst thing for an individual and the enterprise as there’s a huge chance of data breach and exploitation.
Can JWT be decoded?
A valid JWT can consist of just the header and payload sections. … By design, anyone can decode a JWT and read the contents of the header and payload sections. But we need access to the secret key used to create the signature to verify a token’s integrity.
How does JWT refresh token work?
Refresh token: The refresh token is used to generate a new access token. Typically, if the access token has an expiration date, once it expires, the user would have to authenticate again to obtain an access token.
How do you handle expired JWT tokens?
how should I handle an expired JWT
- set a timeout that will execute an API call to get a new access token after 15 minutes (let’s say 14.5 minutes to be on the safe side)
- set an interceptor that will check if the token is still valid and if not first get a new token and then continue with the request.
Should I store refresh token?
Access token and refresh token shouldn’t be stored in the local/session storage, because they are not a place for any sensitive data. Hence I would store the access token in a httpOnly cookie (even though there is CSRF) and I need it for most of my requests to the Resource Server anyway.
Store your access token in memory, and store the refresh token in the cookie: Link to this section. Why is this safe from CSRF? Yes, a form submit to /refresh_token would work and a new access token will be returned, but the attacker can’t read the response if they’re using an HTML form.
What happens when a JWT token expires?
Once it expires, they’ll use their current refresh token to try and get a new JWT. Since the refresh token has been revoked, this operation will fail and they’ll be forced to login again.
Do JWT tokens expire?
The JWT access token is only valid for a finite period of time. Using an expired JWT will cause operations to fail.
Does refresh token expire?
Refresh tokens are used to get a new access token when your current access token expires. … Day 360- If you generate a new access token, your access token and refresh token will both expire in 5 days (365-360=5) and you must get your application reauthorized by the member using the authorization flow.
Is JWT token secure?
The contents in a json web token (JWT) are not inherently secure, but there is a built-in feature for verifying token authenticity. A JWT is three hashes separated by periods. The third is the signature.
How do I make my JWT token more secure?
Issuing a token
- Always sign the token. …
- Use strong cryptography. …
- Set expiration date and unique identifier. …
- Set the issuer and audience. …
- Don’t include sensitive data unless you encrypt the payload. …
- Don’t accept unsigned tokens. …
- Validate header claims. …
- Always validate issuer and audience.
How do you revoke a JWT token?
Managing Revocations Using a Distributed Event System
The most common way to revoke access to resources protected by a JWT involves setting its duration to a short period of time and revoking the refresh token so that the user can’t generate a new token.