防范SQL注入攻击的新办法-IDC天下

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。

以下是引用片段：

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

使用SafeRequest函数替换你的Request。

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