从根本上解决网页注入漏洞被挂马(正确配置mssql数据库用户权限)

1.无论如何不能使用sa直接连接，建议新建一个public权限数据库用户，并用这个用户作为连接数据库
 
2.去掉public对sysobject与syscolumns的select访问

3.通过以下代码检测（失败表示权限正确）：

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 'a'
FETCH NEXT FROM Table_Cursor INTO @T,@C
END
CLOSE Table_Cursor
DEALLOCATE Table_Cursor
 
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以上针对以下方式木马传播：
 
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