[Bug 1799857] Re: sudo -p '' displays a password prompt which it shouldn't

[Karl Stenerud]

I've unfortunately hit a wall investigating this :(

sudo should only override the prompt if passprompt_override is set in
sudoers, or the env variable SUDO_PROMPT is set, and neither is set in
bionic. Furthermore, it's not an issue with the binary, as I've tried
taking the bionic sudo and putting it in a cosmic machine, and it works
perfectly, honoring -p '' like the cosmic version does. That leaves the
environment somehow, but I've run out of leads.

It does work properly in xenial and in cosmic, and the prompt seems to
just be cosmetic anyway, so I'm marking this wontfix.


** Changed in: sudo (Ubuntu)
       Status: Confirmed => Won't Fix

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https://bugs.launchpad.net/bugs/1799857

Title:
  sudo -p '' displays a password prompt which it shouldn't

Status in sudo package in Ubuntu:
  Won't Fix

Bug description:
  I have small script that invokes another shell script as root thus:

  #!/bin/bash
  echo "mypass" | sudo -p '' -S /usr/StorMan/StorMan.sh

  when running in 16.04 LTS this didn't display a password prompt which
  I understand to be correct behaviour.  Since upgrading to 18.04.1 LTS
  the output looks like:

  amonra at Charon:~$ ./storman
  [sudo] password for amonra: 

  which as far as I can determine is not correct.

  Thanks
  Dave

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: sudo 1.8.21p2-3ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
  Uname: Linux 4.15.0-38-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  CurrentDesktop: LXDE
  Date: Thu Oct 25 03:07:27 2018
  InstallationDate: Installed on 2016-03-28 (940 days ago)
  InstallationMedia: Ubuntu-Server 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
  SourcePackage: sudo
  UpgradeStatus: Upgraded to bionic on 2018-10-22 (2 days ago)
  VisudoCheck:
   /etc/sudoers: parsed OK
   /etc/sudoers.d/README: parsed OK
  modified.conffile..etc.sudoers: [inaccessible: [Errno 13] Permission denied: '/etc/sudoers']
  modified.conffile..etc.sudoers.d.README: [inaccessible: [Errno 13] Permission denied: '/etc/sudoers.d/README']

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