Re: Nmap 4.85BETA7 Released!

[David Fifield <david () bamsoftware com>]

On Thu, Apr 02, 2009 at 09:47:49AM -0400, henry.nymann () valeosylvania com wrote:
> David Fifield <david () bamsoftware com> wrote on 04/02/2009 09:44:01 AM:
> > On Thu, Apr 02, 2009 at 09:28:43AM -0400, henry.
> > nymann () valeosylvania com wrote:
> > > >   o Add helpful text for the two most common errors seen in the
> > > >     Conficker check in smb-check-vulns.nse.  So instead of saying
> > > >     things like "Error: NT_STATUS_ACCESS_DENIED", output is like:
> > > >     |  Conficker: Likely CLEAN; access was denied.
> > > >     |  |  If you have a login, try using --script-args=smbuser=xxx,smbpass=yyy
> > > >     |  |  (replace xxx and yyy with your username and password). Also try
> > > >     |  |_ smbdomain=zzz if you know the domain. (Error NT_STATUS_ACCESS_DENIED)
> > > >     The other improved message is for
> > > >     NT_STATUS_OBJECT_NAME_NOT_FOUND. [David]
> > >
> > > I downloaded and tried the new beta 7 version this morning.
> Specifically,
> > > I'm running it on a Windows 2003 SP2 server, and I uninstalled beta 6
> > > first.  However, I am not getting the new messages that this e-mail
> > > references, so does that mean something did not update correctly on my
> > > server?  Doing a "Help | About" confirms the beta 7 version.
> >
> > The only added help messages are for the errors NT_STATUS_ACCESS_DENIED
> > and NT_STATUS_OBJECT_NAME_NOT_FOUND. If you weren't getting those errors
> > before then you won't get any new output. Specifically, if all you saw
> > was "Likely CLEAN" or "Likely INFECTED" then nothing in the output will
> > change.
>
> I get many of the NT_STATUS_ACCESS_DENIED and
> NT_STATUS_OBJECT_NAME_NOT_FOUND responses during my scans.  With the beta 7
> version I am still getting those responses.  I get very few "likely clean"
> messages, and no "likely infected" messages (so far).

Are you getting the help text with those errors? Instead of just saying,
"ERROR: NT_STATUS_OBJECT_NAME_NOT_FOUND", does it say
| Conficker: UNKNOWN; not Windows, or Windows with disabled browser service (CLEAN); or Windows with crashed browser 
service (possibly INFECTED).
| |  If you know the remote system is Windows, try rebooting it and scanning
| |_ again. (Error NT_STATUS_OBJECT_NAME_NOT_FOUND)

If you are getting the longer error messages, then the script is working
like it is supposed to. Unfortunately the error messages could be from a
variety of causes and the script can't differentiate between all of
them. For NT_STATUS_OBJECT_NAME_NOT_FOUND for example, if the remote
operating system is not Windows, then it is not infected. But it could
be that the service required to do detection (the "browser service") has
crashed, and then you can't test infection remotely. You will have to
find that computer and check it locally.

You can use the smb-os-discovery.nse script to find out operating
systems.

David Fifield

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