Re: [Full-Disclosure] new ssh exploit?
From: Ron DuFresne (dufresne_at_winternet.com)
Date: 09/16/03
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To: christopher neitzert <chris@neitzert.com> Date: Tue, 16 Sep 2003 10:25:47 -0500 (CDT)
On Mon, 15 Sep 2003, christopher neitzert wrote:
> More on this;
>
> The systems in question are FreeBSD, RedHat, Gentoo, and Debian all
> running the latest versions of OpenSSH.
>
> The attack makes an enormous amount of ssh connections and attempts
> various offsets until it finds one that works permitting root login.
>
> I have received numerous messages from folks requesting anonymity or
> direct-off-list-reply confirming this exploit;
>
> The suggestions I have heard are:
>
> Turn off SSH and
>
> 1. upgrade to lsh.
>
> or
>
> 2. add explicit rules to your edge devices allowing ssh from only-known
> hosts.
This is perhaps the most workable and doable advise offered, the rest
sucks <smile>.
But, one has to remember ssh does not stand alone, at least openssh, it
needs openssl to be properly maintained as well.
Current openssh and old openssl can leave one hanging perhaps...
Thanks,
Ron DuFresne
>
> or
>
> 3. put ssh behind a VPN on RFC-1918 space.
>
> thanks.
>
>
>
>
> On Mon, 2003-09-15 at 12:02, christopher neitzert wrote:
> > Does anyone know of or have source related to a new, and unpublished ssh
> > exploit? An ISP I work with has filtered all SSH connections due to
> > several root level incidents involving ssh. Any information is
> > appreciated.
> >
> >
> --
> Christopher Neitzert - GPG Key ID: 7DCC491B
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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- Previous message: Person: "Re: [Full-Disclosure] iDEFENSE Security Advisory 09.16.03: Remote Root Exploitation of Default Solaris sadmind Setting"
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