KDE and arbitrary code execution

kde
security

#1

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.

Source: https://www.kde.org/info/security/advisory-20180208-2.txt


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#4

This happens on big projects(like kde) when focus on code gets shaked…
I wonder how /G\nome is :slight_smile:


#5

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