'or'='or'漏洞修补,及上传漏洞修补

 

 

 

下面来说说修补的办法！
1。 后台修补办法
办法很多，我只说其中最简单的一种

用以下代码进行检测过滤~!
并在coon.asp中的顶行加入(假设上面的代码保存为safe.asp)
<!--#include file="safe.asp"-->

<%

Dim Query_Badword,Form_Badword,i,Err_Message,Err_Web,name

'------定义部份 头----------------------------------------------------------------------

Err_Message = 3 '处理方式：1=提示信息,2=转向页面,3=先提示再转向

Err_Web = "dl.Asp" '出错时转向的页面

Query_Badword="'∥and∥select∥update∥chr∥delete∥%20from∥;∥insert∥mid∥master.∥set∥chr(37)∥="

'在这部份定义get非法参数,使用"∥"号间隔

Form_Badword="'∥(∥)∥;∥=" '在这部份定义post非法参数,使用"∥"号间隔

'------定义部份 尾-----------------------------------------------------------------------

On Error Resume Next

'----- 对 get query 值 的过滤.

if request.QueryString<>"" then
Chk_badword=split(Query_Badword,"∥")
FOR EACH Query_Name IN Request.QueryString
for i=0 to ubound(Chk_badword)
If Instr(LCase(request.QueryString(Query_Name)),Chk_badword(i))<>0 Then
Select Case Err_Message
Case "1"
Response.Write "<Script Language=JavaScript>alert('传参错误！参数 "&name&" 的值中包含非法字符串！/n/n请不要在参数中出现：and update delete ; insert mid master 等非法字符！');window.close();</Script>"
Case "2"
Response.Write "<Script Language=JavaScript>location.href='"&Err_Web&"'</Script>"
Case "3"
Response.Write "<Script Language=JavaScript>alert('传参错误！参数 "&name&"的值中包含非法字符串！/n/n请不要在参数中出现：and update delete ; insert mid master 等非法字符！');location.href='"&Err_Web&"';</Script>"
End Select
Response.End
End If
NEXT
NEXT
End if

'-----对 post 表 单值的过滤.

if request.form<>"" then
Chk_badword=split(Form_Badword,"∥")
FOR EACH name IN Request.Form
for i=0 to ubound(Chk_badword)
If Instr(LCase(request.form(name)),Chk_badword(i))<>0 Then
Select Case Err_Message
Case "1"
Response.Write "<Script Language=JavaScript>alert('出错了！表单 "&name&" 的值中包含非法字符串！/n/n请不要在表单中提交非法字符！');window.close();</Script>"
Case "2"
Response.Write "<Script Language=JavaScript>location.href='"&Err_Web&"'</Script>"
Case "3"
Response.Write "<Script Language=JavaScript>alert('出错了！参数 "&name&"的值中包含非法字符串！/n/n请不要在表单中提交非法字符！');location.href='"&Err_Web&"';</Script>"
End Select
Response.End
End If
NEXT
NEXT
end if


%>


2。上传漏洞修补 （UPFILE UPFILEA）

不过相关的修补为:
找到fileExt=lcase(file.FileExt)
将其修改为:
fileExt=FixName(file.FileExt)
formPath=Replace((Replace(formPath,Chr(0),""),".","")


然后在最后的%> 之前,加入检测函数FixName() 函数:
Function FixName(UpFileExt)
If IsEmpty(UpFileExt) Then Exit Function
FixName = Lcase(UpFileExt)
FixName = Replace(FixName,Chr(0),"")
FixName = Replace(FixName,".","")
FixName = Replace(FixName,"asp","")
FixName = Replace(FixName,"asa","")
FixName = Replace(FixName,"aspx","")
FixName = Replace(FixName,"cer","")
FixName = Replace(FixName,"cdx","")
FixName = Replace(FixName,"htr","")
FixName = Replace(FixName,"php","")
End Function