[Cyberduck-trac] [Cyberduck] #10714: SFTP client fails to authenticate where keyboard-interactive mechanism is not supported

[Cyberduck]

#10714: SFTP client fails to authenticate where keyboard-interactive mechanism is
not supported
-----------------------+-------------------------
    Reporter:  Seayou  |      Owner:
        Type:  defect  |     Status:  new
    Priority:  normal  |  Milestone:
   Component:  sftp    |    Version:  6.9.4
    Severity:  normal  |   Keywords:
Architecture:  Intel   |   Platform:  macOS 10.12
-----------------------+-------------------------
 Server is ProFTPd where keyboard-interactive method is not allowed.
 Authentication works fine from lftp, filezilla, etc, but from CyberDuck :)
 Obviously happens both under OSX and Windows

 Debug logs from server side (the part that matters here):
 {{{
 2019-05-27 12:54:14,815 [14] <ssh2:10>: auth requested for user 'test',
 service 'ssh-connection', using method 'keyboard-interactive'
 2019-05-27 12:54:14,816 [14] <ssh2:9>: offering authentication methods:
 password
 2019-05-27 12:54:14,817 [14] <ssh2:10>: auth method 'keyboard-interactive'
 not enabled
 2019-05-27 12:54:14,817 [14] <ssh2:19>: waiting for max of 600 secs while
 polling socket 1 for writing using select(2)
 2019-05-27 12:54:14,818 [14] <ssh2:3>: sent SSH_MSG_USER_AUTH_FAILURE (51)
 packet (64 bytes)
 2019-05-27 12:54:15,914 [14] <ssh2:9>: disconnecting (Application error)
 [at auth.c:1053]
 }}}

 From client side:
 {{{
 May 27 14:48:32 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.concurrent.Promise - Setting <<authenticated>> to `null`
 May 27 14:48:32 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.sshj.userauth.UserAuthImpl - Trying `keyboard-interactive`
 auth...
 May 27 14:48:32 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.concurrent.Promise - Awaiting <<authenticated>>
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [reader] DEBUG
 net.schmizz.concurrent.Promise - Setting <<authenticated>> to `false`
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.sshj.userauth.UserAuthImpl - `keyboard-interactive` auth
 failed
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] WARN
 ch.cyberduck.core.sftp.SFTPSession - Login failed with credentials
 Credentials{user='test', token='', identity=null} and authentication
 method
 ch.cyberduck.core.sftp.auth.SFTPChallengeResponseAuthentication at 5ccef2b0
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 ch.cyberduck.core.sftp.SFTPSession - Attempt authentication with
 credentials Credentials{user='test', token='', identity=null} and
 authentication method
 ch.cyberduck.core.sftp.auth.SFTPPasswordAuthentication at 346c08a4
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 ch.cyberduck.core.sftp.auth.SFTPPasswordAuthentication - Login using
 password authentication with credentials Credentials{user='test',
 token='', identity=null}
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.concurrent.Promise - Setting <<authenticated>> to `null`
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.sshj.userauth.UserAuthImpl - Trying `password` auth...
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.sshj.userauth.method.AuthPassword - Requesting password for
 [AccountResource] test at 192.168.99.105
 May 27 14:48:33 MacBook-Pro Cyberduck[63051]: [Thread-38] DEBUG
 net.schmizz.concurrent.Promise - Awaiting <<authenticated>>
 May 27 14:48:34 MacBook-Pro Cyberduck[63051]: [reader] INFO
 net.schmizz.sshj.transport.TransportImpl - Received SSH_MSG_DISCONNECT
 (reason=BY_APPLICATION, msg=Application error)
 May 27 14:48:34 MacBook-Pro Cyberduck[63051]: [reader] ERROR
 net.schmizz.sshj.transport.TransportImpl - Dying because - Application
 error

         net.schmizz.sshj.transport.TransportException: [BY_APPLICATION]
 Application error
                 at
 net.schmizz.sshj.transport.TransportImpl.gotDisconnect(TransportImpl.java:548)
                 at
 net.schmizz.sshj.transport.TransportImpl.handle(TransportImpl.java:508)
                 at
 net.schmizz.sshj.transport.Decoder.decodeMte(Decoder.java:159)
                 at
 net.schmizz.sshj.transport.Decoder.decode(Decoder.java:79)
                 at
 net.schmizz.sshj.transport.Decoder.received(Decoder.java:231)
                 at net.schmizz.sshj.transport.Reader.run(Reader.java:59)
 }}}

 It'd be nice to try password method first

--
Ticket URL: <https://trac.cyberduck.io/ticket/10714>
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