防范SQL注入攻击的新办法

近段时间由于修改一个ASP程序（有SQL注入漏洞），在网上找了很多相关的一些防范办法，都不近人意，所以我将现在网上的一些方法综合改良了一下，写出这个ASP函数，供大家参考。

Function SafeRequest(ParaName)
Dim ParaValue
ParaValue=Request(ParaName)
if IsNumeric(ParaValue) = True then
SafeRequest=ParaValue
exit Function
elseIf Instr(LCase(ParaValue),"select ") 0 or Instr(LCase(ParaValue),"insert ") 0 or Instr(LCase(ParaValue),"delete from") 0 or Instr(LCase(ParaValue),"count(") 0 or Instr(LCase(ParaValue),"drop table") 0 or Instr(LCase(ParaValue),"update ") 0 or Instr(LCase(ParaValue),"truncate ") 0 or Instr(LCase(ParaValue),"asc(") 0 or Instr(LCase(ParaValue),"mid(") 0 or Instr(LCase(ParaValue),"char(") 0 or Instr(LCase(ParaValue),"xp_cmdshell") 0 or Instr(LCase(ParaValue),"exec master") 0 or Instr(LCase(ParaValue),"net localgroup administrators") 0  or Instr(LCase(ParaValue)," and ") 0 or Instr(LCase(ParaValue),"net user") 0 or Instr(LCase(ParaValue)," or ") 0 then
 Response.Write "<script language='javascript'"
 Response.Write "alert('非法的请求!');"  '发现SQL注入攻击提示信息
 Response.Write "location.href='http://www.wz114.com/';"  '发现SQL注入攻击转跳网址
 Response.Write "<script"
 Response.end
else
SafeRequest=ParaValue
End If
End function

使用SafeRequest函数替换你的Request

可以防范所有的SQL注入攻击，如果还有什么问题请与我联系

Email:ruixing123@hotmail.com