snapd: When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specify Deleg...
CVE-2020-27352 is fixed in 9 products on 1 platform, first by golang-github-snapcore-snapd-dev 2.48.3+18.04, released February 9, 2021. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| golang-github-snapcore-snapd-dev · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | golang-github-snapcore-snapd-dev 2.48.3+18.04 | Feb 9, 2021 |
| golang-github-snapcore-snapd-dev · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | golang-github-snapcore-snapd-dev 2.48.3+20.04 | Feb 9, 2021 |
| golang-github-ubuntu-core-snappy-dev · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | golang-github-ubuntu-core-snappy-dev 2.48.3+18.04 | Feb 9, 2021 |
| golang-github-ubuntu-core-snappy-dev · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | golang-github-ubuntu-core-snappy-dev 2.48.3+20.04 | Feb 9, 2021 |
| snap-confine · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | snap-confine 2.48.3+18.04 | Feb 9, 2021 |
| snap-confine · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | snap-confine 2.48.3+20.04 | Feb 9, 2021 |
| snapd · Debian 12.15 (bookworm) | 2.49-1 | DEBIAN-CVE-2020-27352 | Jun 21, 2024 |
| snapd · Debian 13.5 (trixie) | 2.49-1 | DEBIAN-CVE-2020-27352 | Jun 21, 2024 |
| snapd · Debian 14 | 2.49-1 | DEBIAN-CVE-2020-27352 | Jun 21, 2024 |
| snapd · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | snapd 2.48.3+18.04 | Feb 9, 2021 |
| snapd · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | snapd 2.48.3+20.04 | Feb 9, 2021 |
| snapd-xdg-open · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | snapd-xdg-open 2.48.3+18.04 | Feb 9, 2021 |
| snapd-xdg-open · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | snapd-xdg-open 2.48.3+20.04 | Feb 9, 2021 |
| ubuntu-core-launcher · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | ubuntu-core-launcher 2.48.3+18.04 | Feb 9, 2021 |
| ubuntu-core-launcher · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | ubuntu-core-launcher 2.48.3+20.04 | Feb 9, 2021 |
| ubuntu-core-snapd-units · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | ubuntu-core-snapd-units 2.48.3+18.04 | Feb 9, 2021 |
| ubuntu-core-snapd-units · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | ubuntu-core-snapd-units 2.48.3+20.04 | Feb 9, 2021 |
| ubuntu-snappy · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | ubuntu-snappy 2.48.3+18.04 | Feb 9, 2021 |
| ubuntu-snappy · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | ubuntu-snappy 2.48.3+20.04 | Feb 9, 2021 |
| ubuntu-snappy-cli · Ubuntu 18.04.6 LTS (bionic) | 2.48.3+18.04 | ubuntu-snappy-cli 2.48.3+18.04 | Feb 9, 2021 |
| ubuntu-snappy-cli · Ubuntu 20.04 LTS (focal) | 2.48.3+20.04 | ubuntu-snappy-cli 2.48.3+20.04 | Feb 9, 2021 |
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