[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20150722230705.GB7017@zoho.com>
Date: Wed, 22 Jul 2015 23:07:05 +0000
From: mancha <mancha1@...o.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE Request for OpenSSH vulnerability -
authentication limits bypass
Attached patch fixes.
--mancha
On Tue, Jul 21, 2015 at 11:16:35AM +0200, king cope wrote:
> Hello list, solar designer,
>
> Can you please add a CVE for the mentioned vulnerability in OpenSSH.
>
> The OpenSSH server normally wouldn't allow successive authentications
> that exceed the MaxAuthTries setting in sshd_config, with this
> vulnerability the allowed login retries can be extended limited only
> by the LoginGraceTime setting, that can be more than 10000 tries
> (depends on the network speed), and even more for local attacks.
> Technically this vulnerability affects OpenSSH. It can be found with
> FreeBSD installations because these use the keyboard-interactive
> authentication mechanism (that is the one affected) in combination
> with pam. I haven't tested skey/bsd auth. To note that this
> vulnerability looks pretty old, a test against FreeBSD 6.2 (2007
> release date) showed it vulnerable. Additionally there is no delay
> between the authentication retries, but this is another issue that
> makes this vulnerability more effective.
>
> CVE please!
>
> Thank you,
>
> KC
>
> Reference: http://seclists.org/fulldisclosure/2015/Jul/92
View attachment "openssl-6.9p1_kbd-interactive.diff" of type "text/plain" (1350 bytes)
Content of type "application/pgp-signature" skipped
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
