[Bug 2250] New: SOCKS5 should return "NO ACCEPTABLE METHODS" instead of nothing

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2250

            Bug ID: 2250
           Summary: SOCKS5 should return "NO ACCEPTABLE METHODS" instead
                    of nothing
           Product: Portable OpenSSH
           Version: -current
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: guenter at weheartwebsites.de

In:
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/channels.c?rev=1.332;content-type=text%2Fplain
Search for: "SSH_SOCKS5_NOAUTH not found"

If a connection to SSH-SOCKS5 is established and a unsupported auth
method is sent, SSH will not reply anything.

According to http://tools.ietf.org/html/rfc1928 the server could (it
does not state if the server MUST or SHOULD, hence "could" ;) ) send
simply X'FF' NO ACCEPTABLE METHODS - with this a client can do
appropriate handling.

Would like to hear your thoughts if I am misinterpreting rfc1928, or I
should just suck it up and handle cases like this with my client.

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