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AUSCERT External Security Bulletin Redistribution
ESB-2020.1054
USN-4134-3: IBus vulnerability
25 March 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: ibus
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-14822
Reference: ESB-2019.3571
ESB-2019.3538
ESB-2019.3532
Original Bulletin:
https://usn.ubuntu.com/4134-3/
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USN-4134-3: IBus vulnerability
24 March 2020
ibus vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
IBus could allow local users to capture key strokes of other locally logged in
users.
Software Description
o ibus - Intelligent Input Bus - core
Details
USN-4134-1 fixed a vulnerability in IBus. The update caused a regression in
some Qt applications and the fix was subsequently reverted in USN-4134-2. The
regression has since been resolved and so this update fixes the original
vulnerability.
We apologize for the inconvenience.
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 19.10
ibus - 1.5.21-1~exp2ubuntu2.1
Ubuntu 18.04 LTS
ibus - 1.5.17-3ubuntu5.3
Ubuntu 16.04 LTS
ibus - 1.5.11-1ubuntu2.4
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 CVE-2019-14822
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