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,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
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