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  1. Apache NiFi
  2. NIFI-8711

Support keyboard-interactive authentication for SFTP

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 1.10.0, 1.13.2
    • Fix Version/s: 1.14.0
    • Component/s: Extensions
    • Labels:

      Description

      Changing the supporting library from JSch to SSHJ resulted in removing support for keyboard-interactive authentication when configuring a password in SFTP components. 

      Some SSH servers disable password authentication but support keyboard-interactive authentication.  SSHJ provides support for keyboard-interactive authentication using a password, and SFTP components should attempt both password authentication and keyboard-interactive authentication when a password is configured.

      Without support for keyboard-interactive authentication, SFTP processors report the following error even when configured with valid username and password credentials:

      UserAuthException: Exhausted available authentication methods

      SSHJ reports the following debug log with valid credentials when the server has disabled password authentication:

      net.schmizz.sshj.userauth.UserAuthImpl `password` auth failed

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              • Assignee:
                exceptionfactory David Handermann
                Reporter:
                exceptionfactory David Handermann
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