full-disclosure - Re: Secure OWA

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <589e556c0608300657g518d1b37w1a40fa42df6a1062@mail.gmail.com>
Date: Wed, 30 Aug 2006 09:57:43 -0400
From: "Brendan Dolan-Gavitt" <mooyix@...il.com>
To: "Renshaw, Rick (C.)" <rrenshaw@...d.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Secure OWA

On 8/30/06, Renshaw, Rick (C.) <rrenshaw@...d.com> wrote:
>
>
> -----Original Message-----
> From: full-disclosure-bounces@...ts.grok.org.uk
> [mailto:full-disclosure-bounces@...ts.grok.org.uk] On Behalf Of Dude
> VanWinkle
> Sent: Saturday, August 26, 2006 2:30 PM
> To: Adriel Desautels
> Cc: full-disclosure@...ts.grok.org.uk
> Subject: Re: [Full-disclosure] Secure OWA
>
> > The only real fault I know about is the fact that you can guess passwords
> eternally without locking out user accounts.
>
> There's two sides to this risk.  If you allow OWA logins to lock out
> accounts, and your OWA page is available from anywhere on the Internet, you
> are handing an easy DOS tool to anyone that knows the account names for
> people on your server.
>

Perhaps. But a temporary lockout period would deter brute-force
attempts while still making an attacker do some work to keep the
accounts locked (eg, if you have a lockout of 5 minutes, brute forcing
is no longer practical, but at the same time, if you want to DoS
someone's account you have to keep coming back every 5 minutes. And
that increases the risk you'll get caught.)

-Brendan

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/