Forgive me for this being slightly off topic. We've checked Oracle's
site, including posting to their "Technology Network", and have yet to
find a best practices document for securing Oracle databases. Am I
missing something? ... Or should something this obvious be available on
Oracle's site? Can anyone provide links to such information?
-----Original Message-----
From: Joshua Wright [mailto:jwright (at) hasborg (dot) com [email concealed]]
Sent: Wednesday, June 29, 2005 10:16 AM
To: bugtraq (at) securityfocus (dot) com [email concealed]
Subject: Auditing Privilged Oracle Passwords - hashattack
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I've put together a tool that can be used to build a table of Oracle
password hashes from a dictionary file for a designated username.
Hashes are calculated by creating a user account similar to the target
account to be audited and repeatedly changing the password with "ALTER
USER" for each dictionary word, storing the hash for each password in a
table.
Once the table of hashes is built, a simple SELECT can be issued to
determine if the password hash for a target user is a simple dictionary
word:
SQL> select h.username, h.password, h.hash
2 from hashattack h, dba_users d
3 where d.password = h.hash and h.username = 'SYS';
Today I stumbled across the world's largest hotspot. The SSID is
"linksys".
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Version: GnuPG v1.4.1 (MingW32)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
site, including posting to their "Technology Network", and have yet to
find a best practices document for securing Oracle databases. Am I
missing something? ... Or should something this obvious be available on
Oracle's site? Can anyone provide links to such information?
-----Original Message-----
From: Joshua Wright [mailto:jwright (at) hasborg (dot) com [email concealed]]
Sent: Wednesday, June 29, 2005 10:16 AM
To: bugtraq (at) securityfocus (dot) com [email concealed]
Subject: Auditing Privilged Oracle Passwords - hashattack
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
I've put together a tool that can be used to build a table of Oracle
password hashes from a dictionary file for a designated username.
Hashes are calculated by creating a user account similar to the target
account to be audited and repeatedly changing the password with "ALTER
USER" for each dictionary word, storing the hash for each password in a
table.
Once the table of hashes is built, a simple SELECT can be issued to
determine if the password hash for a target user is a simple dictionary
word:
SQL> select h.username, h.password, h.hash
2 from hashattack h, dba_users d
3 where d.password = h.hash and h.username = 'SYS';
USERNAME PASSWORD HASH
- ---------- -------------------- --------------------
SYS KILTPLEAT 2BBDC477FFB28563
SQL>
Written in PL/SQL, available at
http://802.11ninja.net/code/hashattack-0.1.tgz,
http://802.11ninja.net/code/hashattack-0.1.tgz.asc
Comments, questions, concerns welcome.
- -Josh
- --
- -Joshua Wright
jwright (at) hasborg (dot) com [email concealed]
2005-2006 pgpkey: http://802.11ninja.net/pgpkey.htm
fingerprint: F00E 7A42 8375 0C55 964F E5A4 4D2F 22F6 3658 A4BF
Today I stumbled across the world's largest hotspot. The SSID is
"linksys".
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iD8DBQFCwq0QTS8i9jZYpL8RApOqAKCnTqrAwCaqKT3KALl0b8CDRo9I0QCfRKnB
LcY+tDFFcNAeMbsIg7YWe88=
=L/x5
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