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POSql injection script
 

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    <p>This title of the question may seem to be previously asked and answered but its different scenario for me. I use this script to stop sql injection in my ASP site. As per my knowledge or injecting script i have tried everything . Is it still possible to break through this code or do you feel this is fine . </p> <p>Here is the script</p> <pre><code>&lt;% Function IsInject(strCheck, boolForm) IsInject = False If Not boolForm And Len(strCheck) &gt; 50 Then IsInject = True ' Dim sCmdList, arrCmds, i If boolForm Then sCmdList = "declare,varchar,convert,delete,create,is_srvrolemember,ar(,cast(" Else sCmdList = "update,union,select,drop,declare,varchar,convert,delete,create,is_srvrolemember,ar(,cast(,char(" End If arrCmds = Split(sCmdList, ",") For i = 0 To UBound(arrCmds) If Instr(UCase(CStr(strCheck)), UCase(arrCmds(i))) &gt; 0 Then IsInject = True Exit For End If Next Erase arrCmds End Function Function CleanInject(strClean, boolInt) If boolInt Then CleanInject = CInt(strClean) Else CleanInject = Replace(strClean, "'", "''") End Function '----------------------------------------------------------- 'redirect user if specific IP 'Dim ipaddress, bFBIRedirect, sInjectType bFBIRedirect = True ipaddress = Request.ServerVariables("REMOTE_ADDR") Select Case ipaddress Case "90.120.206.10" Case Else bFBIRedirect = False End Select If bFBIRedirect Then Response.Redirect "http://www.fbi.gov" '----------------------------------------------------------- 'Dim bIsInject, sHackString bIsInject = False If Not bInject Then ' Dim qsItm For Each qsItm In Request.QueryString If IsInject(Request.QueryString(qsItm), False) Then bIsInject = True sHackString = qsItm &amp; "=" &amp; Request.QueryString(qsItm) sHackType = "QueryString" sInjectType = "qs-" &amp; Request.QueryString(qsItm) Exit For End If Next End If If Not bInject Then ' Dim frmItm ' For Each frmItm In Request.Form ' If IsInject(Request.Form(frmItm), True) Then ' bIsInject = True ' sHackString = Request.Form(frmItm) ' sHackString = frmItm &amp; "=" &amp; Request.Form(frmItm) ' sHackType = "Form" ' Exit For ' End If ' Next End If If bIsInject Then Session("hacktype") = sHackType Session("hackstr") = sHackString Session("thepagefrom") = Request.ServerVariables("PATH_INFO") Session("theip") = Request.ServerVariables("REMOTE_ADDR") ' Dim arrWhereAt, iWhereAt, sRedirect arrWhereAt = Split(Request.ServerVariables("PATH_INFO"), "/") iWhereAt = UBound(arrWhereAt) sRedirect = "unknownerror.asp?ip=" &amp; Request.ServerVariables("REMOTE_ADDR") &amp; "&amp;err=" &amp; sInjectType &amp; "&amp;pg=" &amp; Request.ServerVariables("PATH_INFO") If iWhereAt = 1 Then sRedirect = "../" &amp; sRedirect If iWhereAt = 2 Then sRedirect = "../../" &amp; sRedirect If iWhereAt = 3 Then sRedirect = "../../../" &amp; sRedirect Response.Redirect sRedirect End If %&gt; </code></pre>
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    1. USCheran Shunmugavel
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      1. USJoost Evertse
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    1. CO**Just use parameters**.
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    2. COThis wont do anything to help with xss attacks.
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    3. COHello Pareen, in this you have checked only Querystring part and I can see that request.form part is commented so this should be check while we post form. also you can check cookies data. Please let me know is this useful for you.
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      1. USJinesh Jain
 

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