full-disclosure - Re: MySQL Local/Remote FAST Account Password Cracking

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Message-ID: <CAH8yC8kj2ZXW3uzrPmNm-5v89fAssyFyQzuQuzq3Q9THioqEuw@mail.gmail.com>
Date: Tue, 4 Dec 2012 14:18:42 -0500
From: Jeffrey Walton <noloader@...il.com>
To: king cope <isowarez.isowarez.isowarez@...glemail.com>
Cc: submit@...sec.com, full-disclosure@...ts.grok.org.uk,
	bugtraq@...urityfocus.com, submissions@...ketstormsecurity.org
Subject: Re: MySQL Local/Remote FAST Account Password
	Cracking

On Mon, Dec 3, 2012 at 1:13 PM, king cope
<isowarez.isowarez.isowarez@...glemail.com> wrote:
> ...
> Since the SALT does not change (and this is the weak point) in the
> change_user command
> it is a convenient way to crack passwords. (When connecting to mysql
> in each connection
> attempt the SALT is always different and sent out by the server).
> ...
Somewhat relevant here.... Salt has been recently shown to be a good
thing: "Multi-Instance Security and
its Application to Password-Based Cryptography"
(http://eprint.iacr.org/2012/196.pdf).

Jeff

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