Change of username or service not allowed failure after entering one-time passcode

[matthijs zwinderman]

Due to a setting in my server I have to login using: private key, password, google-authenticator. This used to work. After reinstalling my Mac, it doesn't anymore. After logging in with private key, I get the "Partial authentication success" where I can enter a Password (but not username, this field is blank). After entering the correct password, I get the error "Interoperability failure" "Change of username or service not allowed: (<<my-user-name>>,ssh-connection) -> (,ssh-connection). Please contact your web hosting service provider for assistance."

The problem seems to be that the username isn't carried on to the second screen (where I enter my password). I can also not add/change the username here.

Thanks!

[dkocher]

#8630 closed as duplicate.

[dkocher]

We have just tested authentication with password and google-authenticator which works just fine. Will need to test in combination with public key authentication.

[dkocher]

Fix for CLI version in r17113.

[dkocher]

Tested with setting AuthenticationMethods publickey,keyboard-interactive:pam in sshd_config.

osaka:cyberduck dkocher$ ./duck -i ~/.ssh/ubuntu --list sftp://dkocher@172.16.123.137/~/
Authenticating as dkocher…
Private key password protected. Enter the passphrase for the private key file (~/.ssh/ubuntu).
Username (dkocher): 
Login as dkocher
Private Key Passphrase: 
Partial authentication success. Provide additional login credentials.
Password: 
Provide additional login credentials. Verification code.
Verification code: 
Listing directory dkocher…

[dkocher]

Tested with r17118.

[dkocher]

I can reproduce the issue on r 16970 getting Change of username or service not allowed: (dkocher,ssh-connection) -> (,ssh-connection). Please contact your web hosting service provider for assistance..

[dkocher]

Fix in r17107.

[dkocher]

Regression in r16106.

[dkocher]

#8732 closed as duplicate.