VBScript Code breaking from String containing ' -


one of user has ' inside user name , think breaking login code on line temppassword=request.form("userpassword")

if (request.form("action") = "login")     tempusername=request.form("username")     temppassword=request.form("userpassword")      if not (tempusername = "") , not (temppassword = "")         strsql="select contactid,email,password directory email='" & tempusername & "' , password='" & temppassword & "'"         set rsquery=cn.execute(strsql)         if not (rsquery.eof)             '-- login correct, set session variables             session("cbworkuser") = "yes"             session("cbworkusername") = rsquery("email")             session("cbworkid") = rsquery("contactid")         end if         set rsquery = nothing     end if end if

what solutions there fix this?

don't use string concatenation building sql queries. ever. not encounter problems this, make vulnerable sql injection. use parameterized queries (aka prepared statements) instead:

set cmd  = createobject("adodb.command") cmd.activeconnection = cn  set p1 = cmd.createparameter("@email" , 200, 1, 255, tempusername) cmd.parameters.append p1 set p2 = cmd.createparameter("@password" , 200, 1, 255, temppassword) cmd.parameters.append p2  cmd.commandtext = "select contactid,email,password directory " _   & "where email=? , password=?"  set rsquery = cmd.execute

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