Security Incidents mailing list archives

Re: Voluminous SSHd scanning; possible worm activity?


From: Neil Dickey <neil () geol niu edu>
Date: Mon, 10 Dec 2001 11:22:24 -0600 (CST)


"Jay D. Dyson" <jdyson () treachery net>

Please forgive me for replying to you *and* the list, but I wanted to
make sure you got to see what I wrote.

      I've been seeing a lot of SSHd scans of late.
[ ... ]
      Has anyone else seen this sort of thing from their systems?

Until a month or two ago we *never* saw scans to port 22.  Now they
are common, though I'm not seeing anything like the intensity you
describe.  In a week I might see as many as six, total, and that
would be a heavy week for me.

Most of what I detect appear to be SYN scans.  Has anyone done a
honeypot study to find out what weaknesses are being exploited, or
is it just the usual bug in SSH1?

Best regards,

Neil Dickey, Ph.D.
Research Associate/Sysop
Geology Department
Northern Illinois University
DeKalb, Illinois
60115

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