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Date: Wed, 17 Jul 2013 13:57:01 +0200
From: Marcus Meissner <>
Subject: Pre-Auth remote crash in NanoSSH on Avaya
	Ethernet Routing switch	(ERS) 5698 and 5698-PoE


Various openssh 6.2p1 users including our administrators
stumbled over this nice bug in the "nanossh server" during pre authentication
phase within nanossh ( )

Bug at openssh bugzilla:  

Basically if the HMAC list is unexpected long (>1) the remote nanossh
daemon will crash. Unclear if code execution, but well, I would not bet against it.

Also unclear if more than the listed Nortel switches are affected, or all
nanossh deployers, but probably yes.

Ciao, Marcus

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