SQL2000数据库密码被替换，重置密码提示未能找到存储过程sp_password解决方案

利用windows身份验证进入查询分析器后在master数据库下运行如下脚本:

 create procedure sp_password
 @old sysname = NULL, -- the old (current) password
 @new sysname, -- the new password
 @loginame sysname = NULL -- user to change password on
 as
 -- SETUP RUNTIME OPTIONS / DECLARE VARIABLES --
 set nocount on
 declare @self int
 select @self = CASE WHEN @loginame is null THEN 1 ELSE 2 END

 -- RESOLVE LOGIN NAME
 if @loginame is null
 select @loginame = suser_sname()

 -- CHECK PERMISSIONS (SecurityAdmin per Richard Waymire) --
 IF (not is_srvrolemember('securityadmin') = 1)
 AND not @self = 1
 begin
 dbcc auditevent (107, @self, 0, @loginame, NULL, NULL, NULL)
 raiserror(15210,-1,-1)
 return (1)
 end
 ELSE
 begin
 dbcc auditevent (107, @self, 1, @loginame, NULL, NULL, NULL)
 end

 -- DISALLOW USER TRANSACTION --
 set implicit_transactions off
 IF (@@trancount > 0)
 begin
 raiserror(15002,-1,-1,'sp_password')
 return (1)
 end

 -- RESOLVE LOGIN NAME (disallows nt names)
 if not exists (select * from master.dbo.syslogins where
 loginname = @loginame and isntname = 0)
 begin
 raiserror(15007,-1,-1,@loginame)
 return (1)
 end

 -- IF non-SYSADMIN ATTEMPTING CHANGE TO SYSADMIN, REQUIRE PASSWORD (218078) --
 if (@self <> 1 AND is_srvrolemember('sysadmin') = 0 AND exists
 (SELECT * FROM master.dbo.syslogins WHERE loginname = @loginame and isntname = 0
 AND sysadmin = 1) )
 SELECT @self = 1

 -- CHECK OLD PASSWORD IF NEEDED --
 if (@self = 1 or @old is not null)
 if not exists (select * from master.dbo.sysxlogins
 where srvid IS NULL and
 name = @loginame and
 ( (@old is null and password is null) or
 (pwdcompare(@old, password, (CASE WHEN xstatus&2048 = 2048 THEN 1 ELSE 0 END)) = 1) ) )
 begin
 raiserror(15211,-1,-1)
 return (1)
 end

 -- CHANGE THE PASSWORD --
 update master.dbo.sysxlogins
 set password = convert(varbinary(256), pwdencrypt(@new)), xdate2 = getdate(), xstatus = xstatus & (~2048)
 where name = @loginame and srvid IS NULL

 -- UPDATE PROTECTION TIMESTAMP FOR MASTER DB, TO INDICATE SYSLOGINS CHANGE --
 exec('use master grant all to null')

 -- FINALIZATION: RETURN SUCCESS/FAILURE --
 if @@error <> 0
 return (1)
 raiserror(15478,-1,-1)
 return (0) -- sp_password

命令执行成功后，sa的密码是null，可以去企业管理器-安全-sa -写入新密码；

这次被病毒入侵是因为sa的密码太过简单 123456类似，引以为戒！