A potentially dangerous Request.QueryString value was detected from the client 的解决办法

最新推荐文章于 2018-05-10 13:24:08 发布

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#validation #scripting #application #security #processing #string

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本文介绍了当使用QueryString接收特定特殊字符时出现的安全验证错误，并提供了禁用验证的解决方案。

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今天遇到一个问题，没见过。

用QueryString 去接受字符串“☞☞”时出错了，直接崩了。

显示

A potentially dangerous Request.QueryString value was detected from the client (title="☞☞&#9758...").

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.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.QueryString value was detected from the client (title="☞☞&#9758...").

Source Error:


[No relevant source lines]

Source File: c:/windows/Microsoft.NET/Framework/v2.0.50727/Temporary ASP.NET Files/root/8046b68d/14bc268/App_Web_7uz1szh1.0.cs Line: 0

Stack Trace:


[HttpRequestValidationException (0x80004005): A potentially dangerous Request.QueryString value was detected from the client (title="&#9758;&#9758;&#9758...").]
   System.Web.HttpRequest.ValidateString(String s, String valueName, String collectionName) +8721914
   System.Web.HttpRequest.ValidateNameValueCollection(NameValueCollection nvc, String collectionName) +111
   System.Web.HttpRequest.get_QueryString() +129
   System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +65
   System.Web.UI.Page.DeterminePostBackMode() +63
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242
   System.Web.UI.Page.ProcessRequest() +80

原因：

Microsoft .NET Framework 1.1 causes this due to enhanced security features (request validation). 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 of Web.config. However, it is strongly recommended that your application explicitly check all inputs in this case.

网上搜了搜发现解决办法。

Set the value of validateRequest attribute of pages element to false.

<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="TestWebGUI.WebForm1" validateRequest=false%>