Re: Microsoft Access 97 MDW files

>From: "Derek" <derekm@rogers.com>
>To: <vuln-dev@securityfocus.com>
>Subject: Microsoft Access 97 MDW files
>Date: Tue, 17 Jun 2003 15:04:09 -0400

>I'm particularily concerned with the Password column in the

  Try setting a password longer than seven characters.

>If we separate the rows where the data matches we get:

  Yep. It looks to me like it's based on that old lanman scheme of breaking up the password into two seven char chunks and hashing them independently.

  That's why LS == RS for the empty password: both empty 7 char subchunks hash to the same value. That's also why if the pw is < 7 chars, the second chunk of the hash - based on the second (null!) 7 chars of the pw - will always be the same.

  Google "lanman hash weakness" for more info.

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      DaveK