Asking for help, clarification, or responding to other answers. Is there any cleaning utensil that is comparable to fingernails? Some applications: OWASP, Open Web Application Security Project, and Global AppSec are registered trademarks and AppSec Days, AppSec California, AppSec Cali, SnowFROC, LASCON, and the OWASP logo are trademarks of the OWASP Foundation, Inc. Copyright 2020, OWASP Foundation, Inc. You're viewing the current stable version of the Web Security Testing Guide project. How to protect against CSRF? in which he can deliver a CSRF attack. How to cover old Red Dot outdoor outlet for constant use? How do actors control laughter in comedy scenes? How to repeat yourself without being condescending, Specific mechanism behind lethality of yellow coat color in mice. Also keep in mind that "Remember Me" creates a large window in which an attacker can "ride" on the session. generate a random ID associate to the SESSION or Cookie. The secret key is generated using one way function based on user name. Best practices around generating OAuth tokens? Elegant way to merge lines with multi-char-delimiter, ignoring blank lines, supporting \n, \r or \r\n, Sentence started with Ving- But it's really different structure.

One important point in this section is that https must be used for the entire session. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. rev 2020.10.13.37806, The best answers are voted up and rise to the top, Information Security Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, Security issues in “Remember Me” function code example, How to put machine learning models into production, Improve database performance with connection pooling, Responding to the Lavender Letter and commitments moving forward. What is exact meaning of broadcast network in OSPF?

http://www.codinghorror.com/blog/2008/08/protecting-your-cookies-httponly.html.

That implementation is not secure and could lead to identity theft. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Store a secret key in a cookie. Automatically inject the user’s credentials that can be abused by: Tokens should be analyzed in terms of token-lifetime, where some tokens never expire and put the users in danger if those tokens ever get stolen. In order to assist users with their credentials, multiple technologies surfaced: As these methods provide a better user experience and allow the user to forget all about their credentials, they increase the attack surface area. The cookie should always be a random value that expires. If the "Remember Me" checkbox is unchecked then store a session variable of a more normal timeout (like 24 hours).
Make sure to follow the, Ensure that no credentials are stored in clear text or are easily retrievable in encoded or encrypted forms in browser storage mechanisms; they should be stored on the server side and follow.
Check this session variable in a header file for each request.

But if you have a load balanced environment you will have to make sure the encryption key is shared between all instances using your DB for example. One important point in this section is that https must be used for the entire session. Regarding the other data in the cookie it is possible to create a triplet of username, series token and one time token. What risks am I taking by using an http site to play a video game that just records mouse events? I read this OWASP article where they say that to prevent CSRF we need to generate a random ID associate to the SESSION or Cookie. If the session is lasting for a very long time, then this is even more important. Te cookie needs to be configured as a secure cookie (limited to HTTPS only), HttpOnly flag should be set to avoid cross side scripting (the cookie will not be available from javascript) and the domain must be set to the correct value depending on the scope of the cookie. even if its a one way has function it would be safer to just use a cryptographically secure pseudo-random number instead, what is the idea of the row id parameter? Sentence started with Ving- But it's really different structure. What is the right notation to use in multivariable chain rules? Store the credentials in an encoded fashion in the browser’s storage mechanisms, which can be verified by following the. How would a mute person take an oath of office in the United States? it is not clear what it means when $cookie is not 'on'. Storing sensitive data in a cookie is not necessarily unsafe, it depends how you configure the cookie. So, my question is not about how you should do this, but am I correct in the security issues I outlined below for this code example? Are self-organazing teams subject to self-blocking, when there's a disagreement? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. The question is about creating a "Remember Me" function to extend the authenicated session for logged-in people. Am I right in the issues I've identified? Why does the speed of an object affect its path if gravity is warped spacetime? Making statements based on opinion; back them up with references or personal experience. How do launch vehicles measure speed during lift off and ascent?

Asking for help, clarification, or responding to other answers. To learn more, see our tips on writing great answers. Using the OWASP Top 10 for reference, these are the issues I see: Issue 1 : To learn more, see our tips on writing great answers. First we can suppose that $session has the password and the username because the $value contains the username and password of the user. If the session doesn't expire then it will be much easier to brute force. How serious is this new ASP.NET security vulnerability and how can I workaround it?

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