Executive Summary

Title IBus regression
Name USN-4134-2 First vendor Publication 2019-09-23
Vendor Ubuntu Last vendor Modification 2019-09-23
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores


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

- Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS


USN 4134-1 introduced a regression in IBus.

Software Description: - ibus: Intelligent Input Bus - core


USN-4134-1 fixed a vulnerability in IBus. The security fix introduced a regression when being used with Qt applications. This update reverts the security fix pending further investigation.

Original advisory details:

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 1.5.19-1ubuntu2.2

Ubuntu 18.04 LTS:
ibus 1.5.17-3ubuntu5.2

Ubuntu 16.04 LTS:
ibus 1.5.11-1ubuntu2.3

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


Package Information:

Original Source

Url : http://www.ubuntu.com/usn/USN-4134-2

Alert History

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Date Informations
2019-09-23 21:19:11
  • First insertion