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(jiǎn)單加密形式包含在一個(gè)文件里面,而是一些雜亂的暗碼,分別藏在7個(gè)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(gè)地方。Date: Mon, 22 Feb 1999 11:26:41 +0100
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From: Patrick CHAMBET <pchambet@club-internet.fr>

To: sans@clark.net
; g' H  j: X$ \! H$ F! WSubject: Alert: IIS 4.0 metabase can reveal plaintext passwords
Hi all,
0 `! A0 X+ w  w: ~# f' QWe knew that Windows NT passwords are stored in 7 different places across
the system. Here is a 8th place: the IIS 4.0 metabase.
4 ~/ R. i0 V! n5 y2 AIIS 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:
/ ~0 P& `% h8 OC:\WINNT\system32\inetsrv\MetaBase.bin
# b, W: {) Y# D( ?3 B8 RThe IIS 4.0 metabase contains these passwords:
- IUSR_ComputerName account password (only if you have typed it in the
MMC)
" F8 T  P0 I& P# X: \' E1 x- IWAM_ComputerName account password (ALWAYS !)
- UNC username and password used to connect to another server if one of
your virtual directories is located there.
" k2 k7 Y8 s7 s- The user name and password used to connect to the ODBC DSN called
/ f! g. B9 |/ ~+ t1 e4 P) L"HTTPLOG" (if you chose to store your Logs into a database).
Note that the usernames are in unicode, clear text, that the passwords are
  c& U+ e$ A6 ?6 p$ N% ssrambled in the metabase.ini file, and that only Administrators and SYSTEM
) a4 C- g- x1 bhave permissions on this file.
BUT a few lines of script in a WSH script or in an ASP page allow to print
* Z5 Y: ?5 b& q1 G' o8 v# dthese passwords in CLEAR TEXT.
. a# @7 z2 R1 {) jThe user name and password used to connect to the Logs DSN could allow a
malicious 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
1 N+ T8 d' F; j& H. w& ?( Uproblem I am reporting yet. Here is an example of what can be gathered:
"
IIS 4.0 Metabase
! ?4 `- X1 B1 o7 z?Patrick Chambet 1998 - pchambet@club-internet.fr
--- UNC User ---
& D9 K# c5 @  ]& JUNC User name: 'Lou'
UNC User password: 'Microsoft'
& }1 Z. M3 q* w, M) `3 r9 M% Q8 K4 LUNC Authentication Pass Through: 'False'
--- Anonymous User ---
Anonymous User name: 'IUSR_SERVER'
6 l4 w( c! T6 j3 i! `1 WAnonymous User password: 'x1fj5h_iopNNsp'
Password synchronization: 'False'
--- IIS Logs DSN User ---
ODBC DSN name: 'HTTPLOG'
ODBC table name: 'InternetLog'
: {! d3 e8 m) k7 {$ CODBC User name: 'InternetAdmin'
ODBC User password: 'xxxxxx'
  M! W1 s# \- D' B. `7 J--- Web Applications User ---
WAM User name: 'IWAM_SERVER'
WAM User password: 'Aj8_g2sAhjlk2'
. r' }/ y$ [3 Q, N! [5 ODefault Logon Domain: ''
"
3 \6 }! o3 ?4 t9 x5 ]For example, you can imagine the following scenario:
' ^. N" S" |, ]2 m$ O( P: A/ 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
" Q1 ^6 F. Q* ?) J9 Aan IIS 4.0 Web Site Operator. Then, he launches a WSH script that extracts
the login name and password of the account used to access to a virtual
2 W- p* c* a% h  P$ ?1 Kdirectory located on another server, say (b).
Now, Bob can use these login name and passord to logon on server (b).
2 ?8 j/ j& f& @! a- LAnd so forth...
. o8 p3 ]& M2 P7 JMicrosoft was informed of this vulnerability.
_______________________________________________________________________
Patrick CHAMBET - pchambet@club-internet.fr
MCP NT 4.0
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