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Re: [webmin-l] Re: Webmin BruteForce + Command execution - By Di42lo <DiAblo_2 () 012 net il>
From: Jamie Cameron <jcameron () webmin com>
Date: 23 Dec 2004 22:17:35 +1100

On Thu, 2004-12-23 at 20:34, Martin Mewes wrote:
Hello,

amit sides <DiAblo_2 () 012 net il> wrote :
#!/usr/bin/perl
##
# Webmin BruteForce + Command execution - By Di42lo
<DiAblo_2 () 012 net il> #
# usage
# ./bruteforce.webmin.pl <host> <command>
[...]

this is a message from the maintainer ...

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I haven't seen this one before - but it would be blocked by Webmin's
password timeouts feature. However, this feature (surprisingly!) isn't
enabled by default ... 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On behalf of the maintainer I appreciate every input to secure the 
software to its extend. Future versions of Webmin (if needed Usermin 
too) will have this feature enabled by default.

With this we encourage everyone using Webmin to enable this feature to 
avoid a possible break-in.

Again, we would like to tell the OP of this that it would be really nice 
to know first about such issues, so we are ablte to / can do a 
(full-)disclosure on items.

Fortunately, it is quite easy to configure Webmin to defend against this kind
of brute-force password guessing attack. Just do the following :

 - Go to the Webmin Configuration module.

 - Click on the Authentication icon.

 - Select 'Enable password timeouts'.

 - Click on the 'Save' button at the bottom of the page.

Future releases will enable this by default.

 - Jamie

   


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