NT的密碼究竟放在哪

根據(jù)以前的發(fā)現(xiàn),windowsNT密碼雖然不象Windows95那樣以簡單加密形式包含在一個文件里面,而是一些雜亂的暗碼,分別藏在7個不同的地方。這篇最新發(fā)表的文章告訴我們WindowsNT密碼隱藏的第八個地方。Date: Mon, 22 Feb 1999 11:26:41 +0100
( x) l8 m5 y7 m1 Q" i+ I2 ]- ]
From: Patrick CHAMBET <pchambet@club-internet.fr>
9 m+ R5 u3 l. {- Y" A( P7 @
To: sans@clark.net
Subject: Alert: IIS 4.0 metabase can reveal plaintext passwords
" v& Y+ t5 z/ N% qHi all,
We knew that Windows NT passwords are stored in 7 different places across
the system. Here is a 8th place: the IIS 4.0 metabase.
( r9 k. N: {3 bIIS 4.0 uses its own configuration database, named "metabase", which can
be compared to the Windows Registry: the metabase is organised in Hives,
Keys and Values. It is stored in the following file:
+ y0 _7 w7 B+ T8 t. iC:\WINNT\system32\inetsrv\MetaBase.bin
$ `; C7 }1 r$ B0 j' mThe IIS 4.0 metabase contains these passwords:
! t# h8 F  A7 W* b5 ^, H6 H8 C- IUSR_ComputerName account password (only if you have typed it in the
MMC)
0 B4 q7 v5 V8 q0 C3 _$ e- IWAM_ComputerName account password (ALWAYS !)
- UNC username and password used to connect to another server if one of
your virtual directories is located there.
7 ^( ]1 F( |0 K1 O! B- The user name and password used to connect to the ODBC DSN called
' p+ W1 v! f$ B" k9 ~; Y"HTTPLOG" (if you chose to store your Logs into a database).
' O9 N/ J8 G9 ?" R& R, J% _Note that the usernames are in unicode, clear text, that the passwords are
srambled in the metabase.ini file, and that only Administrators and SYSTEM
have permissions on this file.
BUT a few lines of script in a WSH script or in an ASP page allow to print
these passwords in CLEAR TEXT.
The user name and password used to connect to the Logs DSN could allow a
5 m5 h  n0 ]+ r! J5 l* E3 Vmalicious user to delete traces of his activities on the server.
Obviously this represents a significant risk for Web servers that allow
logons and/or remote access, although I did not see any exploit of the
problem I am reporting yet. Here is an example of what can be gathered:
"
9 J* z9 h+ t. f1 h( Z; P. lIIS 4.0 Metabase
2 M, h) W5 A/ J3 l$ m?Patrick Chambet 1998 - pchambet@club-internet.fr
--- UNC User ---
UNC User name: 'Lou'
1 S& C3 ]* B" LUNC User password: 'Microsoft'
4 |) G1 U8 E! _0 u; TUNC Authentication Pass Through: 'False'
! n5 O7 i- q" p: }--- Anonymous User ---
Anonymous User name: 'IUSR_SERVER'
Anonymous User password: 'x1fj5h_iopNNsp'
1 ^, p/ x4 m% S# ~Password synchronization: 'False'
--- IIS Logs DSN User ---
$ B; n" G" E' m9 ~+ nODBC DSN name: 'HTTPLOG'
ODBC table name: 'InternetLog'
* b5 f( z8 V& NODBC User name: 'InternetAdmin'
ODBC User password: 'xxxxxx'
5 J* q! a' P3 u& \4 g. S' h. p$ D+ k--- Web Applications User ---
WAM User name: 'IWAM_SERVER'
WAM User password: 'Aj8_g2sAhjlk2'
' |& V: U6 e* ?6 [% bDefault Logon Domain: ''
"
For example, you can imagine the following scenario:
! g# h1 Q% ^' z' p1 `$ R! BA user Bob is allowed to logon only on a server hosting IIS 4.0, say
server (a). He need not to be an Administrator. He can be for example
5 X, c. T0 J# Q$ aan IIS 4.0 Web Site Operator. Then, he launches a WSH script that extracts
8 c/ A$ W  s! U* X) Dthe login name and password of the account used to access to a virtual
directory located on another server, say (b).
Now, Bob can use these login name and passord to logon on server (b).
And so forth...
; V* Y4 g8 ?# S+ f/ T: }Microsoft was informed of this vulnerability.
_______________________________________________________________________
Patrick CHAMBET - pchambet@club-internet.fr
MCP NT 4.0
& Y5 l9 v3 L/ P, w6 jInternet, Security and Microsoft solutions
* B" c0 l6 c! ~6 we-business Services
IBM Global Services
# Z; g8 o6 X% [