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New script to check Oracle for obvious passwords


Pete Finnigan, an Oracle security specialist, has announced a new tool to help Oracle professionals secure their databases by identifying users whose passwords might be vulnerable to a hack attack by using “obvious” passwords:


Joshua Wright has written a useful tool called hashattack. This is a set of simple scripts that pre-computes the password hashes for a particular Oracle user such as SYS or SYSTEM. The scripts use a dictionary (you can provide your own) to pre-compute the hashes for a large list of possible passwords. You then can use the database table of password/hash combinations to check if the current password is set to a dictionary word. The list can then be used to check the password for the same user in any number of databases.


Here is the source for the script:


Hashattack scripts to find obvious Oracle passwords with the data dictionary


This is a set of PL/SQL, SQL*loader and shell scripts that can be used to check for weak passwords for any Oracle database account. The tool generates a list of password hashes for one user from a dictionary file (word list) and stores the resulting username, password (clear text) and password hash in a table. The pre-computed list can be used to test if the password set of a user is weak. This pre-computing of password hashes means that checking of passwords can be fast against a dictionary.



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