Management of semi-permanent interactive information interchange between two or more communicating devices, or between a computer and user

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0answers
624 views

Simple Session Management Across Multiple Application Servers

How should I handle authentication for a simple iPhone chat app? Backend I'm building the backend using two application servers: Sinatra REST Server It lists users & old messages. Node.js ...
26
votes
1answer
2k views

What cookie attacks are possible between computers in related DNS domains (*.example.com)?

Here, several servers in the same DNS domain emit cookies under a variety of settings (scope, HTTPS, Secure) and another host emits a cookie with the same value. Example Suppose a user has the ...
2
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2answers
266 views

Can sessions be handled securely with cookies disabled?

I've been doing some reading here about session ID handling, and have learned that it's generally a bad idea to include a session ID in the HTML source code, and/or on the query string. For example Is ...
10
votes
4answers
5k views

avoid hitting DB to authenticate a user on EVERY request in stateless web app architecture?

Summary Once a user logs into a web site and his username/password credentials are verified and an active session is established, is it possible to avoid hitting the DB for each and every request ...
4
votes
2answers
258 views

What type of information should be shown to an end user for a logon session summary?

Google, Yahoo, Facebook and several banks have a session summary screen that lists a variety of information, but they aren't consistent in what is offered to the end user. e.g. Facebook offers a ...
4
votes
2answers
857 views

Windows Authentication and Session Ids

After a penetration test made upon an intranet application I'm developing, in ASP.NET MVC, one of the concerns raised was that the application supports concurrent user sessions and it is recommended ...
10
votes
2answers
10k views

OAuth access token vs session key

Is there any advantage to OAuth vs cookie-based sessions (established via username/password) under the following assumptions? There is only one legitimate client to the service The OAuth client ...
3
votes
2answers
5k views

Is it safe to store password in PHP session?

I need to do some encryptions in the private zone of my website and I want to bcrypt the user's password. Is it safe to store the password in the session when user does the login, so that I can use ...
1
vote
2answers
762 views

How long should a browser session last?

I have two online accounts from different banks, one bank expires my session faster than the other, it's quite annoying. I was wondering how long (or short) should a session be for it to be ...
0
votes
1answer
420 views

What mechanism to use for simple and secure HTTP API access?

I am currently working on a service which offers a HTTP API for mobile clients. I want clients to authenticate in order to access my API. The server itself is doing the authentication there will be ...
2
votes
1answer
187 views

Session Cookie HttpOnly Set After Initial Server Response Showing as Vulnerable

Is a session cookie set without HttpOnly at first, but added before the client browser finishes rendering, still considered vulnerable? The scanner test I need to satisfy believes so, but is this a ...
14
votes
2answers
693 views

Does it make sense to hash a session id before passing it to an advertisement partner?

My company runs a webshop. We work with a partner that gives discount vouchers to our customers after they buy (the vouchers can be used in other online shops) and also gives vouchers for our shop to ...
4
votes
4answers
3k views

Is it correct to use form field(hidden) for storing Session Token

Is it correct to use form field(hidden) for storing Session Token instead of using Cookies? What is the security risk associated with it?
1
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2answers
664 views

Centralize Linux System Management

We currently maintain several linux servers and are looking to employ sub contractors. However, we wan't to keep tabs on who does what on each server. Other then creating sudo accounts on every ...
0
votes
1answer
316 views

How does does the “Sign out all other sessions” feature work in Gmail?

In Gmail, at the bottom of the screen if you click Details it will show you your recent account activity and there's a button to sign you out of all other sessions. How does this work? Are they ...
6
votes
3answers
487 views

Vulnerabilities with DB backed session tokens

A user logs in and is given a session token. This token is also stored in a database on the server. The user includes this secret token with each request, and the server will pull it from the DB to ...
1
vote
1answer
497 views

Preventive Measure for detecting Session Fixation attacks

From my understanding if i am not wrong in session fixation attacks. The attacker login into the server as a legitimate user and creates a valid session. He then the tricks the compromised user to use ...
9
votes
2answers
2k views

Session Cookie Stealing Protection

I am looking at how to secure a web site against getting its session cookie stolen. These are the controls that I know are widely known/used: HTTPS Everywhere Only use a securely created random ...
4
votes
2answers
232 views

Does the ability for a user to choose the value of a session id cookie constitute a security flaw?

In the context of a web application, a user connects to this application and a session id cookie is set to authenticate the user for next requests. As the cookie is actually present before submitting ...
0
votes
2answers
286 views

Are there any HTTP servers that can detect two cookies with the same name, but issued from different subdomains?

As a follow up to the Related Domain Cookie Attack question, I'd like to see if there are any servers that are able to detect instances where multiple cookies are sent from multiple domains. In other ...
3
votes
3answers
483 views

Can I safely use an encrypted URL parameter for the session id?

I'm planning to send a user's session ID as a URL parameter which will be AES encrypted. I don't think my app has any link sharing problems. Is this idea feasible? Is it safe?
5
votes
2answers
166 views

What are the tradeoffs in allowing logouts of other logged-in sessions?

For instance, Gmail has allowed remote logout since 2008. I think I have seen other sites that allow you to log out all other logged-in sessions. What are the tradeoffs to consider in this session ...
-6
votes
1answer
337 views

What are the valid characters which can be present in a session ID [can it have spaces] [closed]

I need to know what will the valid characters in a session id or in particular whether it can have spaces in it .?
9
votes
3answers
9k views

Choosing a session ID algorithm for a client-server relationship

I am developing an application which has a client-server relationship, and I am having trouble deciding on the algorithm by which the session identifier is determined. My goal is to restrict ...
4
votes
3answers
770 views

Secure login system - using sessions?

I'm looking for a secure way to let users login on my website. Currently, I've always used a session system, like this: <?php session_start(); if (validPass() || isset($_SESSION['userId'])) { ...
2
votes
3answers
8k views

What typically is the expiration date of a session cookie?

I need to create a session cookie using JavaScript (for more info see question). I'm wondering what should the expiry date be? I'm guessing it's the browsing session, so if I don't set an expiration ...
-1
votes
2answers
343 views

Restore session in Firefox

Restore session in Firefox What does this mean, is it related to the session concept which is stored on the web server? If I stop the computer with my web-app, and then start it again before the ...
18
votes
4answers
15k views

How to hijack a session?

Despite the blatant title of the question, this is actually for a genuine purpose. My site uses PHP code like this: $select="select id from tableA where user_id='".$_SESSION['sess_user_id']."'"; ...
0
votes
1answer
122 views

Implementing secure login for an API

I am implementing a web api with which I plan to authorize access by accepting a username and password and system name and returning a sessionid which can be used on subsequent calls to authorize the ...
2
votes
4answers
532 views

When logging out of a website is anything else required then destroying the session?

In PHP, I'm not sure if I should start the session before destroying it when a user wants to log out. session_start(); session_destroy(); Is there anything else that needs to be done? EDIT: I ...
2
votes
2answers
108 views

Actual issue? Phone switches from 3G to router makes session switch from https to http

I heard that a security issue exists in some cases when a mobile phone has: Connected to a website via https via 3G Connects to a router I'm told that that in this particular scenario the router ...
26
votes
4answers
14k views

Demystifying Web Authentication (Stateless Session Cookies)

I'm currently researching user authentication protocols for a website I'm developing. I would like to create an authentication cookie so users can stay logged in between pages. Here is my first ...
5
votes
3answers
347 views

Is randomizing cookie names a good idea?

What security benefits would randomizing cookie names on a website offer? What are some of the challenges it would create?
3
votes
4answers
227 views

Securing opensource web application

I have an open source website. I need to add an admin section to the website which is accessible to only one person. To make it secure, I was thinking about providing a login page which checks if the ...
0
votes
3answers
181 views

Maintain sensitive key between requests

EDIT: Reworked question. Previous version too poorly asked. On my website users write sensitive messages that must be kept secret. The entire user area is over SSL, so the communication between user ...
4
votes
2answers
428 views

Any real world examples of GPS location data being used with authentication?

Are there any examples of how GPS coordinate (or any location data really) can be used to detect suspicious locations or validate well known locations? Specifically Highlighting new or unusual ...
2
votes
1answer
3k views

Stopping Session Hijacking

If you noticed, I put "stopping" instead "preventing" in the title because I want my PHP application to be as secure as possible. I am wondering if anyone has any better ways to prevent session ...
4
votes
3answers
158 views

Getting automatically logged in to others session via WIFI

Recently i got a very strange behavior on our WIFI network: We share a WIFI network with a simple router. One of us pays the bills and he's the one, who got the management account from our ISP. So if ...
7
votes
3answers
5k views

CSRF cookie vs session based tokens

I will generate a CSRF token and include it in a hidden form field. When receiving the request, I will check the form value against the value either stored in the user's session or in a cookie. Is it ...
5
votes
2answers
5k views

Best way to securely set a session cookie on another domain

We currently have 2 sites http://www.foo.co.uk and https://secure.foo.com. The www site does not have an SSL certificate and is on a different domain. We have a login button on http://www.foo.co.uk ...
1
vote
2answers
2k views

How to invalidate a session on browser closure?

I have a web application where web session need to expire after stipulated period of time. However capturing browser closure event is not a good idea to invalidate a user session. What can be an ...
5
votes
1answer
6k views

Is windows 7 vulnerable to null session?

My lecturer told me that Windows 7 is not vulnerable to null session but did not explain why. What is the preventive measure that windows 7 did to protect against from it? The recommend fixes for ...
3
votes
1answer
6k views

Where and How is data stored in a session?

Where is the information in the fields of a session stored? If I, for instance, store in a session something like $_SESSION['foo'] = 'bar'. Where is "bar" stored? If I store an object of a class, in ...
4
votes
3answers
6k views

Do you need to encrypt session data?

I came across a session management class in PHP which encrypts session data in the session storage folder (i.e., /tmp) and can be decrypted later in your script using a key. I was wondering if it's ...
1
vote
2answers
480 views

Session management: Are the features of application server enough?

HTTP is a stateless protocol. However, when the user logs into a web application, he likes that some session information be preserved, such that he does not have to login again when he wants to go ...
3
votes
1answer
453 views

OpenID Session Fixation with CSRF

This answer describes a situation where CSRF can be used to trick an end user to enter a credit card into another person's Paypal account. It also highlights the fact that state-changing GET requests ...
4
votes
3answers
862 views

Session fixation attack

Given the following conditions, Session ID does not change upon login Session ID travels in form of HTTP cookie There is no cross site scripting/redirection vulnerability on the login page is it ...
2
votes
1answer
2k views

How to secure MySQL based web session data table?

I have the following MySQL session schema: CREATE TABLE `SessionData` ( `id` varchar(50) COLLATE utf8_unicode_ci NOT NULL, `data` text COLLATE utf8_unicode_ci, `date` datetime DEFAULT NULL, ...
4
votes
1answer
3k views

Will session_regenerate_id() without true parameter improves security? Should I use it right before login?

I want to decrease session fixation attack vulnerability, hence I used session_regenerate_id() before login. Somehow I'm in dark now and not sure the right answer for questions below: When we ...
3
votes
4answers
2k views

Can a session be hijacked if the user is redirected from HTTPS to HTTP after login?

I am developing a web app, which makes HTTP calls as long as the user is not logged in. Once the user clicks the login button, he is sent to a "login page" that is HTTPS. The login makes an Ajax call ...