Security Incidents mailing list archives

FW: OpenSSH anomaly


From: "AJ Cochenour" <ajc () ipervasive com>
Date: Sun, 22 Feb 2004 21:42:35 -0700

No input on cause, however *if* it exhibits these symptoms again run the
following from the console:

ps -auxwwf | grep ssh (to get PID)
strace -p <PID>

Then attempt another ssh session, strace should give a complete (if
exhausting) accounting of events.

aj

-----Original Message-----
From: Mike Hoskins [mailto:mike () adept org] 
Sent: Sunday, February 22, 2004 3:36 PM
To: incidents () securityfocus com
Subject: Re: OpenSSH anomaly

On Sun, 22 Feb 2004, Benjamin Franz wrote:
I'm running a RedHat Enterprise 3 ES server that has been running
fairly
reliably for a month. This morning we could not remotely login to the
server via SSH because openssh would terminate the connection
immediately
(no delay) after apparently successfully logging in - without giving a
prompt.

did you by chance attempt doing an `ssh -v ...` to the host while it was
exhibiting this behavior?  the verbose debug output would at least let
you
see precisely what was happening wrt SSH when the disconnect occured.

-m

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