[Bug 1855092] Re: [SRU] Please set MOTD_SHOWN=pam when MOTD was shown

[Launchpad Bug Tracker]

This bug was fixed in the package pam - 1.3.1-5ubuntu3

---------------
pam (1.3.1-5ubuntu3) focal; urgency=medium

  * Fix patches to fix FTBFS

 -- Balint Reczey <rbalint at ubuntu.com>  Thu, 05 Dec 2019 13:18:35 +0100

** Changed in: pam (Ubuntu)
       Status: In Progress => Fix Released

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Title:
  [SRU] Please set MOTD_SHOWN=pam when MOTD was shown

Status in pam package in Ubuntu:
  Fix Released
Status in pam source package in Eoan:
  Fix Committed

Bug description:
  [Impact]

    * Users of containers may never see the MOTD of the container if they are always to the container's shell without PAM being involved.
    * MOTD contains important information about the system's health including the security updates to be installed thus it is desired to show MOTD in container shells, too.
    * The fix in update-motd is creating a snippet in /etc/profile.d which shows MOTD, but only if UPDATE_MOTD is not set, to avoid printing MOTD twice.

  [Test Case]

   * Log in to the system, where PAM prints the MOTD.
   * After seeing the MOTD observe MOTD_SHOWN set:
     $ echo $MOTD_SHOWN
     pam
     $

  [Regression Potential]

   * The fix is simple thus it is unlikely to see any regression due to bad implementation.
   * The newly set environment variable may interact with existing software, but this variable seems to be not used:
   https://codesearch.debian.net/search?q=MOTD_SHOWN&literal=1

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