CVE-2020-27352

EUVD-2020-19864
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.3 CRITICAL
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
canonicalCNA
9.3 CRITICAL
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
Affected Products (NVD)
VendorProductVersion
canonicalsnapd
𝑥
< 2.48.3
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
20.04
canonicalubuntu_linux
20.10
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
snapd
bookworm
2.57.6-1
fixed
bullseye
2.49-1+deb11u2
fixed
bullseye (security)
2.49-1+deb11u2
fixed
buster
no-dsa
sid
2.65.3-1
fixed
stretch
no-dsa
trixie
2.65.3-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
snapd
bionic
Fixed 2.48.3+18.04
released
focal
Fixed 2.48.3+20.04
released
groovy
Fixed 2.48.3+20.10
released
trusty
dne
xenial
Fixed 2.48.3
released
Common Weakness Enumeration
References
https://bugs.launchpad.net/snapd/+bug/1910456
https://ubuntu.com/security/notices/USN-4728-1
https://www.cve.org/CVERecord?id=CVE-2020-27352
https://bugs.launchpad.net/snapd/+bug/1910456
https://ubuntu.com/security/notices/USN-4728-1
https://www.cve.org/CVERecord?id=CVE-2020-27352