[Bug 1225327] Re: sftp in 12.04 has tty attributes setting problem

[Robie Basak]

Thank you for reporting this bug and helping to make Ubuntu better.

I don't think that it's clear that the behaviour should be as you
expect. I think it's normal for programs to disable echo when requesting
a password from the terminal, and then to enable echo again, without any
regard for whether echo was already disabled to start with.

This is the sort of issue that it would be best for upstream to consider
and fix if they consider it appropriate. I think it would be best for
distributions to defer to upstream's opinion on this, rather than
fragment behaviour by fixing things on their own.

Could you please test the latest upstream release, and if this still
affects the upstream release without distribution patches, file a bug in
the upstream bug tracker to get upstream's opinion?

Setting this bug to Incomplete, as it needs an opinion from upstream as
to whether this is really a bug at all. If you find that Ubuntu's
behaviour differs from upstream, or if upstream agree that this is a
bug, then please change the bug status back to New. If upstream consider
the current behaviour to be the correct behaviour, the please change the
bug status to Invalid. Thanks!

** Changed in: openssh (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1225327

Title:
  sftp in 12.04 has tty attributes setting problem

Status in “openssh” package in Ubuntu:
  Incomplete
Status in “openssh” package in Ubuntu Linaro Evaluation Build:
  New

Bug description:
  In Ubuntu 12.04 LTS, when doing following:
  1. stty -echo
  2. sftp user at server
  3. key in pass as required.
  4. cd /tmp
  5. bye
  6. stty -a

  By right, the contents entered in step 4-6 shouldn't be visible, but they do on 12.04.
  Found the same issue on RHEL 6.x. But sftp on Solaris/AIX/HP-UX and RHEL 5.x do not have this issue.

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