[Bug 1915779] [NEW] sudo: bad onwership of /usr/bin/sudo and /usr/lib/sudo/sudoers.so (2001:2501)

[Andrea Righi]

Public bug reported:

After enabling the -proposed ppa in Hirsute (21.04) I'm getting the
following error:

ubuntu at hirsute:~$ sudo su -
sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
ubuntu at hirsute:~$ ls -l /usr/bin/sudo
-rwsr-xr-x 1 2001 2501 190952 Feb 10 11:42 /usr/bin/sudo

I had a root session open so I could fix it by manually setting user and
group ownership back to root.

After that I noticed that also /usr/lib/sudo/sudoers.so had the wrong
ownership:

ubuntu at hirsute:~$ sudo su -
sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
sudo: /usr/lib/sudo/sudoers.so must be owned by uid 0
sudo: fatal error, unable to load plugins

I manually fixed also this one and now my system seems to work normally.

** Affects: sudo (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: sudo (Ubuntu Hirsute)
     Importance: Undecided
         Status: New

** Also affects: sudo (Ubuntu Hirsute)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1915779

Title:
  sudo: bad onwership of /usr/bin/sudo and /usr/lib/sudo/sudoers.so
  (2001:2501)

Status in sudo package in Ubuntu:
  New
Status in sudo source package in Hirsute:
  New

Bug description:
  After enabling the -proposed ppa in Hirsute (21.04) I'm getting the
  following error:

  ubuntu at hirsute:~$ sudo su -
  sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
  ubuntu at hirsute:~$ ls -l /usr/bin/sudo
  -rwsr-xr-x 1 2001 2501 190952 Feb 10 11:42 /usr/bin/sudo

  I had a root session open so I could fix it by manually setting user
  and group ownership back to root.

  After that I noticed that also /usr/lib/sudo/sudoers.so had the wrong
  ownership:

  ubuntu at hirsute:~$ sudo su -
  sudo: error in /etc/sudo.conf, line 0 while loading plugin "sudoers_policy"
  sudo: /usr/lib/sudo/sudoers.so must be owned by uid 0
  sudo: fatal error, unable to load plugins

  I manually fixed also this one and now my system seems to work
  normally.

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