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Date:      Tue, 20 Mar 2001 05:16:27 +0900
From:      itojun@iijlab.net
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        Shoichi Sakane <sakane@ydc.co.jp>, freebsd-security@FreeBSD.ORG, markus@OpenBSD.org
Subject:   Re: Reporting OpenSSH version (Re: What's vunerable?)
Message-ID:  <9942.985032987@coconut.itojun.org>
In-Reply-To: kris's message of Mon, 19 Mar 2001 10:43:43 PST. <20010319104343.A3941@xor.obsecurity.org>

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>> I compiled and installed 2.2.0 'port revision' 2, and I connected
>> to the ssh port number 22 on localhost.  the sshd said,
>>=20
>> 	shoichi:~] telnet localhost 22
>> 	Trying ::1...
>> 	Connected to localhost.
>> 	Escape character is '^]'.
>> 	SSH-1.99-OpenSSH_2.2.0
>>=20
>> I just thought the version was vulnerable.  So I think the version
>> should be "SSH-1.99-OpenSSH_2.2.0-port_revision_2"
>
>You're probably right - something along these lines should be done to
>distinguish the version reported by scanners like scanssh.  I'd prefer
>SSH-1.99-OpenSSH_2.2.0_2 myself to be consistent with the naming of
>the port itself, but I'm not sure if this is allowable syntax.
>Markus, can you comment?

	never play with openssh version number.  the version number
	string is used as protocol backward compatibility handling.  if you
	import 2.5.1, report that it is 2.5.1.

	the only way we are allowed to add  extra thing is to add it
	after a space - like
		SSH-1.99-OpenSSH_2.5.1 foo bar baz

	see NetBSD src/crypto/dist/ssh/version.h.

itojun

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