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

 

Public bug reported:

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)

** Affects: language-selector (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 wily

-- 
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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:
  New

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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