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Cracking MS SQL Server 2000 Passwords

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Category : » Tutorial Database MsSQL

Source : www.databasesecurity.com

SQL Server uses an undocumented function, pwdencrypt() to produce a . demonstrate how Microsoft SQL Server 2000. passwords can be attacked. This can be .

Content Summary :

How does SQL Server store passwords? SQL Server uses an undocumented function, pwdencrypt() to produce a hash of the user's password, which is stored in the sysxlogins table of the master database. This is probably a fairly common known fact. What has not been published yet are the details of the pwdencrypt() function. This paper will discuss the function in detail and show some weaknesses in the way SQL Server stores the password hash. In fact, as we shall see, later on I should be saying, 'password hashes'. What does an SQL password hash look like? Using Query Analyzer, or the SQL tool of your choice, run the following query select password from master.dbo.sysxlogins where name='sa' You should get something that looks similar to the following returned.

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