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[Bug 1486751] Re: in lubnutu the input method for all users can be changed from the guest session.

 

Thanks for your report, Brendan. However, I'm pretty sure there is some
kind of misconception involved - it simply does not work that way.

The input method selector in Language Support is a user specific setting
only. Switching the value changes the file ~/.xinputrc. Also, when you
are in a guest session, clicking "Apply System-Wide" is a no-op. A guest
cannot change any settings system wide. (And when you click "Apply
System-Wide" from a regular session, you are prompted for an admin
password, and then you change the default display language settings
system wide, not the input method.)

The default system wide input method in Wily is locale dependent.
Possibly that has something to do with the observations you made. So, if
you provide an even more detailed step-by-step description for
reproducing the behavior, including what you did with respect to display
language settings, we might be able to figure out the explanation and
decide if something ought to be changed.

** Changed in: language-selector (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1486751

Title:
  in lubnutu the input method for all users can be changed from the
  guest session.

Status in language-selector package in Ubuntu:
  Incomplete

Bug description:
  To reproduce on lubuntu with both ibus and fcitx installed log into the guest session after an install on lubuntu 15.10 in the menu open language selector and change the input method from either ibus to fcitx or fcitx to ibus and then click onto apply system wide and the regular user will have their input method changed after logging out of the guest session and logging in as a regular user. Description:	Ubuntu Wily Werewolf (development branch)
  Release:	15.10

  
  fcitx:
    Installed: 1:4.2.9-1
    Candidate: 1:4.2.9-1
    Version table:
   *** 1:4.2.9-1 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
          100 /var/lib/dpkg/status
  ibus:
    Installed: 1.5.10-1ubuntu1
    Candidate: 1.5.10-1ubuntu1
    Version table:
   *** 1.5.10-1ubuntu1 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
          100 /var/lib/dpkg/status
  language-selector-gnome: 
   Installed: 0.147
    Candidate: 0.147
    Version table:
   *** 0.147 0
          500 http://us.archive.ubuntu.com/ubuntu/ wily/main i386 Packages
          100 /var/lib/dpkg/status
  Description:	Ubuntu Wily Werewolf (development branch)
  Release:	15.10

  
  I expected a need to authenticate to change system wide settings Instead I could change all users installed input methods witout a password. Not really sure this is a secruity vulnerability. I have not yet tried with flavors other than lubuntu.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: language-selector-gnome 0.147
  ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
  Uname: Linux 4.1.0-3-generic i686
  ApportVersion: 2.18-0ubuntu7
  Architecture: i386
  CurrentDesktop: LXDE
  Date: Wed Aug 19 14:30:00 2015
  ExecutablePath: /usr/bin/gnome-language-selector
  InstallationDate: Installed on 2015-08-19 (0 days ago)
  InstallationMedia: Lubuntu 15.10 "Wily Werewolf" - Alpha i386 (20150819)
  InterpreterPath: /usr/bin/python3.4
  PackageArchitecture: all
  SourcePackage: language-selector
  UpgradeStatus: No upgrade log present (probably fresh install)

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