The following two security advisories has been published by the KDE project:

KDE Project Security Advisory: Plasma Desktop: Arbitrary command execution in the removable device notifier
KDE Project Security Advisory: Plasma: Notifications can expose user IP address

KDE Project Security Advisory: Plasma Desktop: Arbitrary command execution in the removable device notifier

KDE Project Security Advisory
=============================

Title: Plasma Desktop: Arbitrary command execution in the removable device notifier
Risk Rating: High
CVE: CVE-2018-6791
Versions: Plasma < 5.12.0
Date: 8 February 2018


Overview
========
When a vfat thumbdrive which contains `` or $() in its volume label is plugged
and mounted trough the device notifier, it's interpreted as a shell command,
leaving a possibility of arbitrary commands execution. an example of offending
volume label is "$(touch b)" which will create a file called b in the
home folder.

Workaround
==========
Mount removable devices with Dolphin instead of the device notifier.

Solution
========
Update to Plasma >= 5.12.0 or Plasma >= 5.8.9

Or apply the following patches:
Plasma 5.8:
https://commits.kde.org/plasma-workspace/9db872df82c258315c6ebad800af59e81ffb9212
Plasma 5.9/5.10/5.11:
https://commits.kde.org/plasma-workspace/f32002ce50edc3891f1fa41173132c820b917d57

Credits
=======
Thanks to ksieluzyckih for the report and to Marco Martin for the fix.

KDE Project Security Advisory: Plasma: Notifications can expose user IP address

KDE Project Security Advisory
=============================

Title: Plasma: Notifications can expose user IP address
Risk Rating: Low
CVE: CVE-2018-6790
Versions: Plasma < 5.12.0
Date: 8 February 2018


Overview
========
Plasma has support for the Desktop Nofications specification. That specification allows
embedding images in notifications. Plasma was not sanitizing the HTML that forms the notification.
That allowed for notifications to load a remote image leaking the user IP address. This is in turn
made a bit worse by the fact that some chat software doesn't sanitize the text they send to the
notification system either meaning that a third party could send a carefully crafted message
to a chat room and get the IP addresses of the users in that chat room.

Workaround
==========
Disable notifications

Solution
========
Update to Plasma >= 5.12.0 or Plasma >= 5.8.9

Or apply the following patches:
Plasma 5.8: https://cgit.kde.org/plasma-workspace.git/commit/?h=Plasma/5.8&id=5bc696b5abcdb460c1017592e80b2d7f6ed3107c

Credits
=======
Thanks to David Edmundson for the fix.