Security :: Creating New User Changes Logged In Credentials
Nov 23, 2010
In my application, I have users request accounts, and then an admin goes in to approve or reject the account. When the admin approves the account, the create user wizard is used. After the user is created, I set the new user's role, and update a few other items in my database for user tracking, and send out an email to notify the new user of their account status. Here's the kicker: Once this new user is created, the admin, is now logged in as the new user. How is this happening? And how do I stop it? Here is my CreatedUser code, scrubbed of non-pertinent code.
[Code]....
In my environment, we use Active Directory as our password repository. I'm writing an app that uses the users windows session (windows auth) to authenticate the user. This is working well, but I need to provide a way for users to log in as a different user. I setup a web form to accept a username and password. My question is this, I need a secure way to validate the user's credentials against AD. I cant have the credentials passed as clear text. Ive come across the impersonate user functions, but i'm leary because you have to pass a clear text password into the password field. I know I could also use LDAP, but without a certificate, I know plain LDAP is relatively insecure. Can someone point me in the right direction of a more secure solution to query AD with the credentials?
I am building a web application that is limited to one database, thus I cannot use the handy ASP.NET config tool. I am attempting to use SqlClient to authenticate users from a user table I added to my database. Here is the code I have thus far:
We are using membership provider for LDAP authentication. It is working as it should.
But what all configuration settings I have to do so that all the future requests to this application run under the security context of the Logged in user account not through the some default user set in IIS.
We need to have this working because all the permissions on the database are based on the logged in user.
We are using form authentication for LDAP authentication. And having impersonation = true in web.config.
I'm working on an ASP.NET project for the first time in about three years; in the meantime I've been working with Python/Django, PHP and Obj-C. Anyways, picked it right back up... except something that is totally killing me right now, and I have a feeling it must be staring me in the face:
I'm trying to bind to an LDAP server, for the purpose of authenticating users. The way it works here is, you bind on your own credentials, use that to find the Distinguished Name of the user you're authenticating, then you bind again on their DN and their password. If the bind is successful, the password was correct and the user can be authenticated.
Here's the problem - the first bind (on the fixed credentials, the ones with the ability to search for users and their subtrees) works fine. The search works fine. The second bind fails, no matter what, with the LDAP error INVALID_CREDENTIALS. This happens even when completely valid credentials are supplied.
Here's the code, with the usernames and passwords redacted, of course...
I deployed a website where a logged user or an anonymous user can select data and download a XML file. The website generate the XML file in the server and then deliver it.
It works fine in my development environment, but after deployment, the anonymous user can download the file, but the logged user receive this error:
System.UnauthorizedAccessException: Access to the path 'd:HostsLocalUserheringerwebsiteUpload20110107094051.xml' is denied.
It is weird that as anonymous i can do it.
The website server help states this:
"Grant write, modify, delete access rights on website's folder
Your website executes under unique user account that by default has full control over the website's folder. So your application can create, open, read, write and delete files and folders inside of your root folder.
There is no need and no way to change this permissions.
If, when running ASP.Net application, you still unable to create file or update it, you have to check your Web.Config file for "<Identity impersonate..." tag and remove it.
The only exception is when the application tries to modify a file or folder in "Application_Start" event of Global.asax file. This is by design that user authenticated only after the Application_Start even. Before the user is authenticated your website runs under an identity of Application Pool which is "Network services". That account doesn't have access to the folder of your website.
To make it work you eather have to move the code that tries to modify files or folders out of the "Application_Start" event of the Global.asax file or inside the event you'll need to impersonate your user by code."
But i am not using impersonate and the tag is not in my web.config.
I am the web developer at a medical clinic. I have 2 scenarios going on:
First, I have a physicians only component of our employee portal to allow access to only physician shareholders or physician non-shareholders. My structure is built like:
Physicians Only Administration Affiliations Calendars Compensation Minutes
The Affiliations folder is only going to be accessible by the physician shareholders. Therefore, I have security roles set for Physicians Only and Affiliations. When I test, the security is set correctly on the folders. However, when I try to login as different people, all with different roles, I have to login with user name and password, twice, before the system allows me in.
Secondly, I have secured areas within the employee portal also. However, when I navigate to them, the system doens't usually prompts me to login. If it does prompt me to login, it too, is on the second try. So how does it know who I am? And more importantly, how do I get the system to actually prompt the user to login with their credentials?
I have an ASP.net 2.0 application on an IIS6 server with a second server running SQL.
The problem I have is that I can't use Integrated Windows Authentication to authenticate against the SQL server, instead the IIS passes its machine name (DOMAINMachineName$) to the SQL server. Of course I can add the necessary permissions to the machine name account on SQL, but I want to use the local user credentials in Integrated Windows Authentication to authenticate against SQL.
I have tried to find some reading/articles online but apart from a basic understanding I can't find the details I need to implement into my application. All I have found is that IIS doesn't pass the credentials onto a remote machine when using Integrated Windows Authentication, and Kerberos should be used instead. I have no experience of Kerberos or how to use it in ASP.net so I am hoping it can be done using Integrated Windows Authentication or be pointed to some good easy to understand articles on using/implementing Kerberos.
I'm running an ASP page that is using a WCF client to get some data. How can I set/pass the Network Credentials (of the user that performed the request, not the .net pool thread) on the WCF client so the WCF service will be able to perform impersonation using these credentials ?
Our users are only only allowed to log into our site from one location at a time. If they attempt to login from a second location, how do I log them out of the first location?
I have been creating a website using the SQLMembershipProvider. I have been using an administration account to create the back-end system for generating the users fine for about 2 weeks. I now have more users created and I can log in fine. However, when I log in as the newly created users, they can get to the page they are after, but if they refresh the page or redirect to another page, they get redirected to the login page. I have checked permissions, iis recycler, session state and security setting in my web.config (posted below) but nothing has fixed it. It cannot be IIS because it does it on my development machine as well as on the actual webserver and it works fine for the admin user.
I have used membership provider to implement my system. The system administrator can list the users. What I want to do is, administrator should be able to sign-in as the selected user. I can sign out administrator by FormsAuthentication.Signout but how can I sign in as the selected user? Passwords are hashed so I can not retrieve the passwords.
I've successfully made a custom membership provider that connects, queries, and updates my custom Oracle database. I found a good sample on MSDN. I also found documentatio on the provider itself. However, I cannot find anywhere example calls you have to make for the different actions within the web pages themselves. Where can I find that?
For example
How do I check if a user is already logged in? What do I do when a user hits the login button? How does each page get the user that is logged in? etc.I am not using the asp login control. I have custom form, custom data, and custom graphics.
All I'm trying to do is pull the current user's login name from Active Directory. I've tried User.Identity.Name.ToString, which returned nothing at all. I tried Environment.UserName.ToString, Which returned "NETWORK SERVICE" which is not the firstname.lastname username that I was expecting.
I have one application for collection centres in the city in which ADMIN will have access to all pages in it.In which I have added functionality for admin to see Online users/offline users collection and there collection center name.How can i see the users online automatically when they will be logged in on application.Like we all see in google talk, yahoo messanger, etc like that onlyI also want to keep the option like whether to view only online user or offline users etc.I have tried the following code for getting the Ip address for the computer..But I am unable find how user should be shown as active
ip=Request.ServerVariables("HTTP_X_FORWARDED_FOR") ; if (!string.IsNullOrEmpty(ip)) {
If a user who is logged in wants to delete his own account, why does login status still show him loggedIn even when user has been actually deleted.What I want is when user deletes his account he should get logged out also at the same time ....How do i log him out ?
[Code]....
Line 25: Call deleteSelectedUser()Line 26: Line 27: If User.Identity.Name = LstBoxUserList.SelectedItem.Text ThenLine 28: FormsAuthentication.SignOut()Line 29: Call deleteSelectedUser()
I'm using the defualt membership provider, i created a table and used the gridview on the logged in user page to show his information such as address e-mail phone zip code etc,, how can i do this without writing a code?
i have a login form where it validates 'username' and 'password' against a datbase table. After a user logs in, i would like to show their details such as image, name, etc in a detailsview.
My 3.5 app uses Forms Authentication. I create an authentication cookie (ticket) with an expiration date of one day. The cookie's IsPersistent is set to True. I do not use any session variables. Session timeout is the default 20 minutes.
Here's the problem:
When the session times out in 20 minutes, the user is redirected to the logon page even though the authentication cookie has not expired.
Why does this happen? I thought the session and the cookie were independent of each other.
I new to ASP.net and have created the registration form and login using the wizzard. This data is now stored in the relevent tables provided by asp. I also have created an extra table with profile information like address, phone number etc and a USer ID field that links with the aspnet_users table.
I am trying to display the details of the user when they log in so for example...
User logs on, clicks profile page, profile information can be added and viewed.
Now the problem is I am using a Select statement to get the data but when I do a Where statement im not sure what to put to basically say where userid = current user id logged on.
a user loged in and he wants to delete his user. how do i make a delete query that refers to his userID how do i get the user id of the current logedin user?
