Allow HTML Text In Asp Textbox Without Using ValidateRequest=false
Jul 24, 2010Is it possible to send a html text entered in asp.net text box without making validaterequest to false.
View 1 RepliesIs it possible to send a html text entered in asp.net text box without making validaterequest to false.
View 1 RepliesI have a textbox and i want the user to be able to submit a youtube embed code.
Is this possible without setting 'ValidateRequest' to false?
tell me the use of Validaterequest False?
View 4 RepliesI'm using FreeTextBox HTML editor in some webforms in my asp.net project . if I do not set ValidateRequest property to false I get this error :
A potentially dangerous Request.Form value was detected from the client
It's OK in admin folder though , Because only authorized users have access to work with it . But how about public pages like sections where every users have access to leave comments(using FreeTextBox for collecting users comment ) ? Isn't risky for XSS Attack ? If the answer is not Yes , So what's ValidateRequest property for?
FYI I am using .NET 4.0 / MVC 3. In my controller, the following is my code:
[HttpPost]
[ValidateInput(false)]
public ViewResult Edit(ContentTemplateView contentTemplateView, FormCollection collection)
Everything works fine when I don't enter HTML, so I know the proper controller is being fired. Also, I have following set properly in my web.config files:
<httpRuntime requestValidationMode="2.0"/>
I only get this problem when I include the FormCollection (which is needed for this particular Controller). So what exactly am I doing wrong? [I have done what was proposed on the following questions, and they work as long as there is no FormCollection. None of them offer a solution with an included FormCollection] Why is ValidateInput(False) not working? Asp.Net MVC Input Validation still firing after being disabled ValidateInput Attribute Doesn't Seem To Work in ASP.NET MVC
I'm using a php script to http post some xml files to a .net URL.
When I submit I get the response:
A potentially dangerous Request.Form
value was detected from the client
(<?xml version="...UTF-8"?> <!DOCTYPE
cXML SYSTE...").
Description: Request Validation has detected a potentially dangerous client input value, and
processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.
As I'm not using .NET I can't set ValidateRequest="false" in web.config.
Do I need to sanitize my xml before submitiing? How can I do this?
I have an app that was originally running fine in ASP.Net 3.5, using the ValidateRequest set to false to allow HTML to be saved from a rich text box. However, after converting the app to 4.0, I am getting the Potentially Dangerous message, even though both the page and web.config have the value set to false.
I went into the page and created a PagesSection object and checked its value and then set the value to false. Everytime the page is hit (postback or new) the value is always returned as true, until I set it to false. Not sure why it is reverting to true.
When I set fckEditor to Some Value like
fckDescription.Value = "Description Text";
It creates problems such as Update Panel not doing Async PostBack for DropDownList control and gives error when DropDownList selection changes:Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500
But when I Comment out these lines
// fckDescription.Value = "Description Text";
It Works Fine... I am wondering why it is so !!?!!
Also, fckEditor is outside UpdatePanel and DropDownList Control is inside UpdatePanel.
Do sites like Stackoverflow or asp.net use validateRequest= "false" at their page directive? If "Yes" then how they are checking the user input and if "NO" then how they are able to postback the data ?
View 1 RepliesI use fckedit 2.6.6 control in asp.net 4.0 (FCKeditor_2.6.6 and FCKeditor.Net_2.6.3)
somebody told me I should add ValidateRequest="false" to aspx,
but my aspx works well without add ValidateRequest="false",
I'm wanting to allow users to enter HTML in only a single textbox. I understand it's possible to change ValidateRequest in the Page directive to false in order to remove protection.I'm guessing that this allows HTML to be entered in any textbox on the page. Is there anyway to apply ValidateRequest=False on only a single control?
View 3 Replies(ASP.NET 4.0 C#)
I have my <httpRuntime requestValidationMode="2.0" /> in the webconfig. AndI have my validateRequest="false" in page directories.On one page, I send some data (html) from a ckeditor (textarea) to a database. Works fine.On another page I fill the ckeditor with data from a database, then I update it (send it back), and I get the famous "A potentially dangerous Request.Form value was detected from the client."
Makes me very confused. The only difference is that on the second page the data gets dynamically inserted into the textarea, where on the first page the textarea is empty on pageload. Am i missing something here? Im pretty sure Encoding/decoding doesnt mean anything, as the framework stops it before I can even start messing with it on the backend.
I have a form at which I use ckeditor. This form worked fine but now doesn't work in Asp.Net 4. I have ValidateRequest="false" directive.
View 3 RepliesI understand I can use validateRequest="false" to by pass ASP.NET security. I'd like to know what security issues setting this flag may cause. Can I be 100% sure there won't be any issue as long as I encode the input using a XSS library?
View 3 RepliesHere's the situation. I have an aspx page that is designed to receive a POST request with some XML values, parse the XML, grab the relevant items, and write them to the page. The problem arises when I try to launch the page using the POST request. When I launch using Fiddler, building the request manually and just pasting the XML in the body of the request everything works fine and dandy. When I launch the page from a basic HTML form, however, things don't go so great. The HTML form that I'm using looks like this:
[Code]....
When the page loads I get the error:
A potentially dangerous Request.Form value was detected from the client Everything I've read so far has told me that the solution is to add ValidateRequest="false" to the page directive in the top of the .aspx file, or in the pages element of the web.config file. But neither of these work. Afterwards, I still get the same error. Any idea what I need to do to make this work?
why the ValidateRequest dose not work when html tags had sent by __doPostBack method in javascript.
[Code]....
why the ValidateRequest dose not work when html tags had sent by __doPostBack method in javascript.
<script>
[Code]....
</script>
i need to concatenate the html tag like <br/> and to the textbox.text in asp.net textbox. i have used this txtMessage.Text + <br/> + strgetlist; but it is displaying TaskName<br/>Project1,project2.. how to give break and space between thest two.
View 4 RepliesFirst off, is it possible to get the html input (text) value and put that value into a asp.net textbox using a asp:button?
View 16 Repliesi've 2 textboxes(t1,t2)
t1.text = <p>some data</p>
if i click a button i want to display only "some data" in t2 without <p>,</p> means, I want to display only text without any html tags, how?
I have aproblem that when i add some special character in the textbox and submit the page it give error. A potentially dangerous Request.Form value was detected from the client (ctl00$ContentPlaceHolder1$txtname="<test>"). I found the solution of this porblem by ValidateRequest="false". But if i do this then the request will not be validate and then attacks probablity will be increase. what should i do to for this whithout using ValidateRequest attribute.
View 4 Replieswanting to add the freetextbox from freetextbox.com to it.But before i add that I want to get html encoding working with out having to put the pagevalidation to false.This is what I've been reading and trying to work. I have the encoding from the database to teh site working fine. Its the encoding to the database that is being a pain in my back.http://dotnetslackers.com/articles/aspn /Encode_and_Display_HTML_Securely_in_ASP_NET_2_0.aspxI've added the validaterequest to false and encoding my text by the following.
[Code]....
Is there a way to disable request validation for just certain textboxes instead of the whole page? I'm using Server.HtmlEncode/Decode because users are legitimately using < and > characters but I don't want to use ValidateRequest="false" on the whole page because someone could add a textbox later and forget to escape the input in which case I would want validation to occur so the error would be discovered rather than be vulnerable to html injection. It seems like there has to be a simple solution but I'm not having any luck finding it.
View 1 RepliesI have a textbox with a regex validator attached to it and some stuff in the ontextchanged code behind. This all works fine unless I start the textbox out with Visible=false. Obviously, I'm setting the textbox.Visible to true later on in the codebehind, but when I do this, no postback occurs when the text changes. I'm pretty sure I have isolated the cause to when I change the visible property, but has anyone seen anything like this or know some sort of work around?
View 1 RepliesHow to check the field value which is assigned to the text box is empty or not.
I need to set the visibility of the text box to false when the field value is empty.