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Re: Pen-tester's analysis of .NET security?
From: Jeff Bryner <jbryner1 () yahoo com>
Date: Wed, 24 Mar 2004 15:59:03 -0800 (PST)

--- Frank Knobbe wrote:
However, even if ADODB and ODBC functions filter quotes, they do not
filter <, >, and other HTML entities, causing XSS issues all over the
place. So, saying ASP.NET does input validation seems to be a
misleading
statement.
ADODB doesn't but .net 1.1 does filter for CSS input. Code up a basic
page and enter <scrip in a text box and you'll trigger a
HttpRequestValidationException 

Here's the closest 'white papers' I've found on the input validation: 

Inside the 'new' validate: 
http://weblogs.asp.net/vga/archive/2003/05/02/6329.aspx
(Interesting to note what it doesn't check: Headers and
ServerVariables)

Flaw in it from last year: 
http://weblogs.asp.net/gad/archive/2003/11/12/37219.aspx
http://www.securityfocus.com/bid/8562/discussion

What's not to like about default css validation: 
http://www.mostlylucid.co.uk/posts/864.aspx

How to code your own validator in .net 1.0:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspp/html/scriptingprotection.asp




=====
Jeff
-----------------------
You... you can't dump me! I'm using your name for all my passwords! What exactly am I supposed to do about that!? 

- Justin Simoni

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