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Date: Tue, 18 Nov 2014 11:22:45 +1100
From: Joshua Rogers <>
Subject: Re: Wordpress WP-DB-Backup v2.2.4 Plugin Remote Database
 Backup Download Vulnerability

On 18/11/14 10:30, Larry W. Cashdollar wrote:
> Turns out Matthew Bryant had already covered everything I had but a few months ago here:
On that blog..
> So we have to bruteforce these five hexadecimal digits – what’s the
> math on that? Since our keyspace is any hex character and we have a
> total of five digits we have 16^5 possibilities or 1,048,576
> permutations. 
Using birthday problem maths..
1048576! / ((1048576-1205)! * 1048576^1205) =


aka. after 1,205 attempts, you'd have a 50% chance of hitting the
correct location..

Just something to consider.

-- Joshua Rogers <>

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