C# - Submitting Html Code Without Setting ValidateRequest To False?
Feb 10, 2011I 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?
I 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?
Is it possible to send a html text entered in asp.net text box without making validaterequest to false.
View 1 Repliestell 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'm new to ASP.NET and MVC in particular. Now, I'm trying to understand if I can easily get values of custom attributes of submitted data. For example, When writing something like this inside a form (which works and posts and I can get the checkbox value) <%= Html.CheckBox("cb1", new { listen = "listen:6" }) %> Can I get the value of "listen" directly or do I need JS? (I know I can just use hidden fields, but I'm I'm asking anyway)
View 1 RepliesSetting value in html control in code behind without making server control
<input type="text" name="txt" />
<%--Pleas note I don't want put runat=server here to get the control in code behind--%>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
Code behind
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
//If I want to initlize some value in input, how can I set here
}
}
protected void Button1_Click(object sender, EventArgs e)
{
Request["txt"] // Here I am getting the value of input
}
We have a site were trusted users can add some Javascript tracking code into a text box for submitting, so naturally we have turned off Validation by adding the ValidateRequest="false" into the Page Directive.
However it we seem to be getting the error again all of a sudden : A potentially dangerous Request.Form value was detected from the client , Now we cant add ValidateRequest="false" into the Config or the Master page this page inherits from. So how do I allow Javascript to be posted, what is overridding the ValidateRequest?
We are using .Net 3.5
I have a GridView with a load of data in, there is an ID associated to the data that I would not like to be visible to the users. All worked fine when all the cells were visible, but as soon as I change the ID DataBound column to false, when I try to access the item in code I get "" instead of it's actual value (that worked perfectly when it was visible).
View 2 RepliesI have a site that will not use theming. But by default the value is set to true. Does ASP.NET do a check everytime to see if I'm using themes. Is there a performance hit?
View 2 RepliesI have an update panel which has 2 set of controls each in their own separate panels. We can select either panel by a checkbox list and they become visible. Now I am trying to set a value by javascript in the panel that becomes visible on my checkbox click but the problem is that I cant access the controls through javascript as they are not rendered on page as visibility is false.
I cant find the controls inside the page source even though they are visible on page so javascript cannot access them. Is there any way other than doing a postback and setting them visible to access them via javascript?
In my database I have boolean column to declare if something is 'active'. In my web application I would only like one item to be able to have the 'active' status at once.
Therefore I have a radio button list in my aspx page to force the user to select one item. I know it is easy to set the selected item to true through my SQL update statement, but how do I automatically set everything else back to false/null!?
I have a panel that contains several controls.
On the other hand i have a MultiView that contains Several view that in turn itself contains several controls .
In multiview we have to set ActiveViewIndex for the view which we want to see.
That same thing can be done through Panel containing another seleral panel's and setting its Visible property to True/False accordingly.
Is seems Multiview is just using this Visible property internally to render controls .Since other views (whose Index is not set to be active Index) are processed on the server for its Whole life cycle(I am confused here..whether i am right or not) .Same thing perhaps happen when we use a Panel insteed and use Visible=True/False. So, what is the difference between MultiView and Panel taking this scenario ?