asp sql injection

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ASP. NET solution to prevent SQL Injection

ASP. NET prevents SQL InjectionGenerally, modifying files one by one is not only troublesome but also dangerous. Next I will explain how to prevent injection from the entire system.In the following three steps, we believe that the program will be safer and the maintenance of the entire website will become simpler.I. Data Verification

Two small functions make your ASP program immune to SQL injection!

Rem # Long Integer Conversion Function tonum (S, default) If isnumeric (s) and S Tonum = clng (s) Else Tonum = default End if End Function Rem # SQL statement ConversionFunction tosql (STR)If isnull (STR) Then STR = ""Tosql = Replace (STR ,"''","''''")End Function Example:Dim SQLDim strwhere, strname, intageStrname = tosql (Request ("user "))Intage = tonum (Request ("Age"), 20)SQL = "select * from [us

SQL injection and ASP Trojan upload

Trojan Horse | Upload SQL injection, how to upload a Trojan, has been a headache, I am here to provide an alternative way to upload a trojan. 1, SQL injection, with xp_cmdshell to the server to write a file to write an ASP file. File contents:

023. ASP. NET parameterized query to prevent SQL injection attacks

Tags: pass stat pps NEC connection status exe setting ATI 1 /// 2 ///parameterized queries prevent SQL injection attacks3 /// 4 Public intChecklogin (stringLoginName,stringloginpwd)5 { 6 stringstrSQL ="Select COUNT (*) from tb_loginuser where [email protected] and [email protected]"; 7SqlConnection conn =NewSqlConnection (configurationmanager.appsettings["Constr"]); 8 if(C

Asp. NET protection against SQL Injection attack method _ practical skills

One, what is SQL injection-type attack? An SQL injection attack is a query string that an attacker inserts a SQL command into a Web form's input field or page request, tricking the server into executing a malicious SQL command. I

A further discussion on ASP preventing SQL injection Vulnerability

A further discussion on ASP preventing SQL injection Vulnerability /** Author: Ci Qin Qiang Email:cqq1978@gmail.com */ There seems to be nothing left to say about the SQL injection prevention of ASP. In my ASP's project, are writt

Write a generic ASP anti-SQL injection attack program

SQL injection was played by the novice-level so-called hacker masters, found that most of the hackers are now based on SQL injection implementation, hey, who makes this easy to get started, okay, don't talk nonsense, now I start to say if you write generic SQL anti-

Asp. How to prevent SQL injection attacks in net

Asp.net| attack One, what is SQL injection-type attack?A SQL injection attack is an attacker who inserts a SQL command into the input field of a Web form or a query string for a page request, tricking the server into executing a malicious

WoDig Community Program 4.12 wodig. asp page filtering is lax, resulting in SQL Injection Vulnerability

Source: Bug. Center. Team Affected Versions:WoDig 4.1.2 Program introduction:WODIG is a well-designed Chinese DIGG Community open source program. It is the best solution for DIGG community programs in the Windows NT service environment. Vulnerability Analysis: In the wodig. asp file:Tags_name = Request ("tags_name") // 13th rows......The Get_MainContent process is in the file/WoLib/Cls_Class.asp:Public Sub Get_MainPP (pageurl) // row 827th......If tag

Write a generic ASP anti-SQL injection attack program

program | Attack SQL injection by those rookie level of so-called hacker Master play out the taste, found that most of the hacking is based on SQL injection implementation, hey, who let this easy to get started, well, don't talk nonsense, Now I'm starting to say that if you write a generic

No worries Shopping System ASP Professional Edition SQL anti-injection bypass and repair

In the results of views. there is a problem with the asp file. If there is an injection, we can see that: hw_id = Request ("hw_id") hw_id does not have any filtering, or request requests, it will be cool at first glance, the old vulnerabilities in the past have not been well solved in the new version, or have not completed the vulnerability follow-up code. Finally, they are in sqlcheck.

ASP. NET 4 learning notes (1) SQL injection attacks and solutions.

I. Definition: the so-called SQL Injection Attack is the process that application developers did not expect to pass SQL code into the application, only applications that directly construct SQL statements using user-supplied values will be affected. For example, the original SQL

ASP prevents SQL Injection code

Set the following Code Copy to the header of each file to prevent SQL injection. Program Security is the most important :) Dim fy_url, fy_a, fy_x, fy_cs (), fy_cl, fy_ts, fy_zx'--- Define partial headers ------Fy_cl = 1' Processing Method: 1 = prompt message, 2 = redirect page, 3 = Prompt before redirectFy_zx = "error. asp" 'page to be switched when an erro

ASP prevents SQL injection methods

Generic anti-SQL Injection code ASP edition Code Dim sql_injdata Sql_injdata = "' |and|exec|insert|select|delete|update|count|*|%| Chr|mid|master|truncate|char|declare " Sql_inj = Split (Sql_injdata, "|") If request.querystring For each sql_get in Request.QueryString For Sql_data=0 to Ubound (Sql_inj) If InStr (Request.QueryString (Sql_get), Sql_inj (sql_

ASP. NET uses HttpModule to implement anti-SQL injection and loading styles and JS files

1. Create a new class to implement the IHttpModule interface code as follows:When implementing the Init method of the interface, we chose the AcquireRequestState event, why not the Begin_request event? This is because we may use the session in the process, and the Begin_request event does not load the session state (about HttpModule can refer to this article).2, processing the data submitted by the website(1), get modeCodeCopy CodeThe code is as follows:URL Submission Data Get method(2), post mo

Asp. NET program to prevent SQL injection attack method

It is not particularly difficult to prevent the ASP.net application from being hacked into by SQL injection, as long as you filter all the input before using the contents of the form input to construct the SQL command. Filter input can be done in a variety of ways. ⑴ for dynamically constructing SQL queries, you can u

Asp. Anti-SQL injection code and instance in net

First, the verification method The code is as follows Copy Code ///SQL injection filtering///String///to filter returns True if there is an unsafe character for the parameterpublic static bool SqlFilter2 (string intext){String word= "And|exec|insert|select|delete|update|chr|mid|master|or|truncate|char|declare|join";if (intext==null)return false;foreach (String i in Word.) Split

Two functions under ASP to prevent SQL injection attacks

Functions used to prevent SQL injection attacks. You can use them directly. However, you may not be able to use them all. Therefore, you need to enhance security awareness. CopyCode The Code is as follows: '================================ 'Filter the SQL statements in the submitted Form '================================ Function forsqlform () Dim fqys, ERRC, I,

ASP prevents SQL injection code _asp base

Copy the following code to the head of each file to prevent SQL injection, write program security is the most important: Dim Fy_url,fy_a,fy_x,fy_cs (), FY_CL,FY_TS,FY_ZX '---define partial head------ FY_CL = 1 ' processing mode: 1 = hint information, 2 = Turn page, 3 = prompt before turning FY_ZX = "error.asp" The page to turn when error '---define partial tail------ On Error Resume Next Fy_url=request.se

Code release! Two small functions make your ASP program immune to SQL injection!

Rem # Long Integer Conversion Function Tonum (s, default) If IsNumeric (s) and S Tonum = CLng (s) Else Tonum = Default End If End Function REM # SQL Statement conversions Function Tosql (str) If IsNull (str) Then str = "" Tosql = replace (str, "'", "" ") End Function Example: Dim SQL Dim strwhere, StrName, IntAge StrName = Tosql (Request ("user")) IntAge = Tonum (Request ("age"), 20)

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