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AUSCERT External Security Bulletin Redistribution
ESB-2019.3519.2
USN-4134-1 and -2: IBus vulnerability
24 September 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBus
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Privileged Data -- Existing Account
Resolution: None
CVE Names: CVE-2019-14822
Original Bulletin:
https://usn.ubuntu.com/4134-1/
https://usn.ubuntu.com/4134-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running IBus check for an updated version of the software for their
operating system.
Revision History: September 24 2019: Ubuntu has reverted the security fix as
it introduces a regression.
September 17 2019: Initial Release
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USN-4134-1: IBus vulnerability
16 September 2019
ibus vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
IBus would allow local users to capture key strokes of other locally logged in
users.
Software Description
o ibus - Intelligent Input Bus - core
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 - 1.5.19-1ubuntu2.1
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: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o CVE-2019-14822
- --------------------------------------------------------------------------------
USN-4134-2: IBus regression
23 September 2019
ibus regression
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
USN 4134-1 introduced a regression in IBus.
Software Description
o ibus - Intelligent Input Bus - core
Details
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
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o USN-4134-1
o LP: 1844853
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