31 Jan
2015
31 Jan
'15
8:35 p.m.
Hello Don,
Many thanks for the info.
Unfortunately the BPQ32/FBB gateway user seems to present the sysop's FBB
gateway callsign to JNOS which happens to be the only ftpuser with the sysop
bit set.
Hence if you don't put an mbox password in autoexec.nos file, free access!
But yes, I have added the mbox password and the outside user does get the 5
digit password.
I do not use the JNOS mbox so that's why I have been caught out.
The real answer of course is never enable the FBB BBS gateway if it has
telnet access and other connections.
I hope this has helped others with a similar setup.
Regards
-----Original Message-----
From: 44net-bounces+vk1kw=netspace.net.au(a)hamradio.ucsd.edu
[mailto:44net-bounces+vk1kw=netspace.net.au@hamradio.ucsd.edu] On Behalf Of
Don Moore
Sent: Sunday, February 01, 2015 12:06 AM
To: AMPRNet working group
Subject: Re: [44net] JNOS2 vulnerable to outside hack
(Please trim inclusions from previous messages)
_______________________________________________
You can set up a password for that.
In your autoexec.nos file at the following line.
mbox password <newpassword>
This sets a new remote sysop password. A remote sysop is a user
whose entry in the ftpusers file has the SYSOP_CMD bit set. When
a remote sysop enters the '@' command to the Jnos mailbox, and there
is a non-null mbox password established, five random numbers are
displayed. The remote sysop is expected to then transmit the letters
corresponding to these numbers, taken as zero-relative positions in
the password string. Several lines of five letters can be sent, only
one of which need be correct. The last line sent must be empty, ie,
just a CR. If the response is correct, the remote sysop is then given
the Jnos command-line prompt, and may issue most Jnos console commands.
Commands which would require creation of a new session are disallowed.
Use the "exit" command to exit from the Jnos command level.
On Sat, Jan 31, 2015 at 7:51 AM, vk1kw <vk1kw(a)netspace.net.au> wrote:
(Please trim inclusions from previous messages)
_______________________________________________
Hello All,
Please be advised that if you run FBB BBS with outside telnet access
thru
BPQ32 and have the FBB gateway enabled, someone may connect to JNOS
via the gateway and the internal RS232 ports and execute the '@'
command on the JNOS prompt line. This gives access to Linux
Directories etc.
I have not seen the '@' command mentioned in the JNOS2j documentation
so not sure where it gets compiled in so if you could maybe help me
there please?
It does not seem to be in the DOS options and not the 'ED' definition
as both are undefined.
Also my compile of JNOS2j completes ok with no 'success' indications
and produces a file it seems but suffers from the dreaded crash a few
minutes after it runs - I suspect it is the open port problem but yet
to check that out.
Cheers
Rob
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cheers,
Don