CVE-2020-27352

Description

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.

Category

9.3
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory ubuntu.com
Affected: Canonical Ltd. snapd
Published at:
Updated at:

References

Link Tags
https://bugs.launchpad.net/snapd/+bug/1910456 issue tracking
https://ubuntu.com/security/notices/USN-4728-1 vendor advisory
https://www.cve.org/CVERecord?id=CVE-2020-27352 issue tracking

Frequently Asked Questions

What is the severity of CVE-2020-27352?
CVE-2020-27352 has been scored as a critical severity vulnerability.
How to fix CVE-2020-27352?
To fix CVE-2020-27352, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27352 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-27352 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-27352?
CVE-2020-27352 affects Canonical Ltd. snapd.
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