CVE-2020-27352 Affecting snapd package, versions <2.48.3+20.04


Severity

Recommended
high

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (18th percentile)

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  • Snyk IDSNYK-UBUNTU2004-SNAPD-1070982
  • published10 Feb 2021
  • disclosed21 Jun 2024

Introduced: 10 Feb 2021

CVE-2020-27352  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 snapd to version 2.48.3+20.04 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream snapd package and not the snapd package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Delegate=yes - as a result systemd will move processes from the containers created and managed by these snaps into the cgroup of the main daemon within the snap itself when reloading system units. This may grant additional privileges to a container within the snap that were not originally intended.