USN-4134-1: IBus vulnerability

  • Thread starter Ubuntu security notices
  • Start date

Ubuntu security notices

ibus vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

IBus would allow local users to capture key strokes of other locally logged in users.

Software Description

  • ibus - Intelligent Input Bus - core

Simon McVittie discovered that IBus did not enforce appropriate access controls on its private D-Bus socket. A local unprivileged user who discovers the IBus socket address of another user could exploit this to capture the key strokes of the other user.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04
ibus - 1.5.19-1ubuntu2.1
Ubuntu 18.04 LTS
ibus - 1.5.17-3ubuntu5.1
Ubuntu 16.04 LTS
ibus - 1.5.11-1ubuntu2.2

To update your system, please follow these instructions:

After a standard system update you need to reboot your computer to make all the necessary changes.


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