| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| snapd (PTS) | stretch (security) | 2.21-2+deb9u1 | vulnerable |
| stretch (lts), stretch | 2.21-2+deb9u3 | vulnerable |
| buster (security), buster, buster (lts) | 2.37.4-1+deb10u3 | vulnerable |
| bullseye (security), bullseye | 2.49-1+deb11u2 | fixed |
| bookworm | 2.57.6-1 | fixed |
| trixie | 2.65.3-1 | fixed |
| sid | 2.66.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| snapd | source | (unstable) | 2.49-1 | | | |
Notes
[buster] - snapd <no-dsa> (Minor issue)
[stretch] - snapd <no-dsa> (Minor issue)
https://ubuntu.com/security/notices/USN-4728-1
https://github.com/docker-snap/docker-snap/security/advisories/GHSA-798c-v3jq-h646
https://bugs.launchpad.net/snapd/+bug/1910456