ASP.NET is a Web application framework developed and marketed by Microsoft to allow programmers to build dynamic Web sites, Web applications and Web services.

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How can I detect if IETF TokenBinding is in use for bearer tokens?

Token Binding increases the security of traditional bearer tokens (cookies). This Blog describes that ASP.NET can use Token Binding. As a security consultant, I'd like to observe or detect that this ...
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39 views

Oracle sql injection [closed]

Im playing a tournament and have gotten pretty far already. Found a sql injection, blind, oracle 11g database on a windows 64 bit, asp .net based. The user is not dba. The finishing point is ...
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1answer
31 views

Do IIS / ASP.NET / MVC version headers reveal patch presence?

Quick question: does anyone know whether the IIS / ASP.NET / MVC version headers, like this: Server: Microsoft-IIS/8.5 X-AspNetMvc-Version: 5.2 X-AspNet-Version: 4.0.30319 can be used to determine ...
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2answers
82 views

When I turn off request validation in asp.net, am I vulnerable?

So I have request validation off in my web application. You can add /foo?=<script>and my web application won't catch it -it doesn't filter it- Does this make me vulnerable to attacks; should I ...
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1answer
38 views

Trying to build an open authentication controled authorization website for multiple domain users

I'm not sure that this is possible but I figure at worst, I'll be told you cannot do that. Our organization has a report server that sits in a DMZ accessible by multiple units that have their own ...
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6answers
9k views

Anonymous surveys that aren't so anonymous

In the past I have completed an 'anonymous' survey at work only to find that my employer was able to garner a lot of not-anonymous information from this survey. Location, name of manager, etc. None ...
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84 views

C# app and ASP.NET api: validating requests/responses

So I have one C# WPF desktop app (client), which communicates with my web api to login for the user, get info, etc. The C# WPF app will communicate with a hardware device as well. However, there is a ...
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1answer
95 views

How restrict is an Asp .Net Web App with ipSecurity enabled?

The IT department of my company refused to host an ASP .Net Web App on our intranet. For security reasons that would be the best solution. Right now I'm considering other options. One of those is to ...
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1answer
86 views

Are recent versions of ASP.NET implementing proper authenticated encryption?

There has been uncovered before that ASP.Net does not use the authenticated encryption right (e.g. here), they used Mac-then-encrypt that lead to some practical attacks. So I am wondering if I use ...
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3answers
6k views

What risks do Cookieless sessions have? What are the mitigations?

I'm debating if I should support cookieless sessions in my web app. It would look something like this: http://www.example.com/(S(lit3py55t21z5v55vlm25s55))/orderform.aspx Since the URL is never ...
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1answer
4k views

Hown I can test “Microsoft ASP.NET Forms Authentication Bypass” in ASP.Net 4.0.30319

I searched in google for "ASP.Net 4.0.30319 vulnerability " keyword. finally,I found "Microsoft ASP.NET Forms Authentication Bypass" in below link: ...
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1answer
93 views

What happens when CA server is down?

Let's assume that I have a server which accepts requests over HTTPS. The server resides in a closed environment, and relies on a local CA server. I am not sure if this is relevant, but the server is ...
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2answers
5k views

IIS Host Header Attacks

Is IIS and ASP vulnerable to the same Host Header Attacks we have seen on Apache and Nginx? Specifically the attacks that use the HTTP Host Header to reset a password or implement web-cache poisoning. ...
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1answer
78 views

Practical benefit of using SqlCredential vs username/password in connection string

Currently I'm using SQL Server Authentication with the username/password as part of the connection string for my web application. As far as I know this standard procedure within the .NET world and ...
2
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2answers
123 views

Is this ASP site vulnerable to XSS or not?

I took a scan of a ASP site and it said that request validation was off. It caught it by sending a URL of example.com/?foo=<script> and received a response URL of example.com/?foo=<script> ...
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8answers
3k views

Why should I hash passwords?

I've read that every good web application should hash passwords. I found many articles about hashing. So I started implementing hashing on my website and then I asked myself why should I do it? When a ...
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2answers
2k views

How reliable is ASP.NET's Request Validation feature?

ASP.NET offers an extra layer to protect your application from XSS attacks and injection in general which is called Request validation. On their official topic, they mention that: Even if you're ...
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3answers
2k views

Create a page to experiment with SQL injection [closed]

This semester, I have taken a course on Information Security and my project for this course is to implement an SQL injection to obtain admin privileges. For this I first download Havij software ...
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3answers
335 views

Is there a way to steal PHP or ASP code from a web server through the HTTP(S) protocols?

I am working on a web application that would include some custom development and got a bit concerned about code theft. So the question I wanted to ask is whether it is - generally speaking - possible ...
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1answer
262 views

Securing the backend of your web application?

We are grappling with how to architect are back end for security. Some of the recommendations I've seen look like this: Source Some will have another firewall between the application server and ...
2
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2answers
92 views

Can two users share the same Request.UserHostAddress?

I am working on an ASP.NET MVC-5 web application, which is available to public users (no login is required). And I need to prevent the same user from submitting more than 5 "contact us" requests ...
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1answer
4k views

How client certificate works for authentication (in Web API)

I have been working on this scenario for a week. I have implemented the code to authenticate client certificate using this link: ...
6
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1answer
4k views

Where to store access and refresh tokens on ASP.NET client web app - calling a REST API

I've made a Web API in ASP.NET that acts as the entry point into a SQL Server database for report data. This service has a "token" endpoint that authenticates a user via ASP Identity and return a ...
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1answer
36 views

Is it worth reporting a asp.net runtime error? [closed]

I found a runtime error on united.com. Is it worth submitting? The exception doesn't seem to show any identifiable information.
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3answers
5k views

How does a website owner decrypt ASP.NET's Viewstate, and cookies

I'd like to audit my viewstate for information I don't want to be sent down to the client. What are the steps needed to decrypt this information into human readable form? How would I decrypt the ...
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3answers
3k views

ASP.NET MVC security check list

I am planning to start a new web site on ASP.NET MVC 2 (3). Does anybody a full (if possible) check list of actions, approaches I should reach to avoid almost problems with security?
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1answer
109 views

How did the Code Red worm work?

So I've been reading a bit about the Code Red worm, and I get the gist but the overflow string doesn't make sense to me. From this site, it says that the overflow string the worm used was ...
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3answers
34k views

How to ensure that cookies are always sent via SSL when using ASP.NET on IIS 7.5?

Firesheep has brought the issue of insecure cookie exchanges to the forefront. How can you ensure that all cookie exchanges are forced to occur only via an SSL-secured connection to the server when ...
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1answer
148 views

Is it possible to execute Server Side Scripts despite Content-Type header?

Say, there's an upload function where users are supposed to upload images only. However, it's possible to upload arbitrary files bypassing the restriction. Say, I uploaded a shell (aspx) and ...
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0answers
399 views

Is XSP suitable for Internet facing, production hosts? (either self hosted, as an Apache plugin, or FastCGI)

XSP is portable version of ASP.NET that allows for operation on OSX, Linux, and Windows. It's an alternative to IIS, and hosts its own web server, or can plug into existing web servers such as ...
2
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1answer
214 views

Use RSA Encryption With ASP.NET

My goal is to implement asymmetric encryption in an ASP.NET website to secure user-entered Social Security Numbers. I want to encrypt the SSNs with a public key, and only display a masked version, to ...
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0answers
135 views

Is it possible to exploit an image field in which I can upload any file? [closed]

I'm pentesting this web application developed in ASP.NET. I've found that I can upload any file as profile photo. When I later visit the profile page the site tries to display it like this: <img ...
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0answers
186 views

Hydra - Possible to follow redirects

I'm trying to use Hydra on an ASP web application. Their login page uses the following method: site/Login: username/password If successful, I am redirect back to site/Login but with a newly set ...
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0answers
55 views

Is it secure to use HttpSessionState.Session to store Identifying Information

I am writing an ASP.NET web app. Is there anything that is insecure to store in HttpSessionState.Session? More specifically, is it ad practice to store such information as UserID, or security ...
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6answers
7k views

Is this a ViewState attack?

I recently found this request in the event log: Client IP: 193.203.XX.XX Port: 53080 User-Agent: Mozilla/4.0 (compatible; Synapse) ViewState: -1' Referer: Now, the ViewState: -1' part combined ...
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2answers
676 views

ASP.NET session id strength

After reading this and this, I am wondering if it is considered secure to use the default ASP.NET sessionID as a means to authenticate the user. I know it would be better to implement ASP.Identity, ...
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2answers
465 views

Security of an SQL database server used in web app

At my organisation we have a website survey that one of the managers here uses for equality purposes. They designed and implemented the survey in Adobe FormsCentral which is now being retired, so I ...
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2answers
142 views

Best practice for identity management methods with regards to confirming user existence

I'm working on a new site that uses asp.net identity to register users. I'm making use of email addresses as usernames and the email address has to be confirmed before the user can log in. I've been ...
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1answer
117 views

Machine certificates for accessing a web app in IIS only from an specific PC client

We have an ASP.NET web app running in IIS, with about 200 users, some are inside our LAN and other ones are outside our LAN. Every user has a userid account and a password to login. Besides those ...
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2answers
188 views

Securing user supplied files in IIS

I have an Internet website running on IIS/Windows configured as follows: The website is publicly accessible for visitors to browse. A user can login and upload files. The user will be able to see ...
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1answer
240 views

Security benefits to have IP-filter in HttpModule instead of Page-Load in asp.net pipeline?

I'm working on implementing an IP-filter which blocks all requests by machines outside our IP-range. This is for an asp.net project (written in c#). I've read on multiple forums that the safest way ...
2
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1answer
290 views

Client side certificates in IIS for accessing a web app only from an specific PC

We have an ASP.NET web app running in IIS, with about 200 users, some are inside our LAN and other ones are outside our LAN. Every user has a userid account and a password to login. Besides those ...
3
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2answers
3k views

Web Crawler for ASP.NET site

Do you know any crawler/spider software, which is able to go through ASP.NET application, not ASP.NET MVC, but the one full of __doPostBack JavaScript functions on every link/button/change event? If ...
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1answer
141 views

Client Certificates

After countless hours of reading I have come to the find that mutual authentication via client certificates seemed to be a viable and appropriate solution for the following scenario. I have a ...
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4answers
7k views

How to stop other websites from sending cross domain AJAX requests?

From two different applications, I was able to send cross-orgin requests. Though the browser returns a "cross origin" error my server is still receiving and executing the request. For example, from a ...
6
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1answer
292 views

Is it unwise to use Redis to store PII, private keys, and other secrets?

I'm reviewing a system that is using Redis to store all client secrets, private keys, and other things. The problem is that Redis loads the entire DB into RAM Since SSL's heartbleed, Rowhammer, and ...
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1answer
200 views

User Authentication for a public website in 2015 [closed]

I am creating a new website for online shopping in .net and was wondering if i have another option beside Forms authentication to validate the users in a safe and secure way (this has been around for ...
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1answer
700 views

How do I prevent tampering with form submission data, and changing the details for any account?

Although this is something that only employees can use, I'd like to prevent the tampering anyway. I don't like insecure code, and this is hideously insecure. Here's an example link: <a href="#' + ...
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4answers
852 views

Worthwhile from security standpoint to limit database server user for ASP.NET website to only EXECUTE on stored procedures?

I know that obviously we must avoid sql injection attacks through user input validation and parametrized queries. There's already a firewall in place on the database server to limit remote ...
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1answer
117 views

What is the best way to track the authenticated user on the server side? [closed]

For a web app, the client side is javascript in the browser. The server side is ASP.NET with a REST API. At present there is a single server but we plan to scale out with a server each in the US, UK, ...