{"id":"CVE-2020-27352","aliases":["DEBIAN-CVE-2020-27352","EUVD-2020-19864","GHSA-3hqj-7v65-62fj","UBUNTU-CVE-2020-27352","USN-4728-1"],"status":"published","title":"When generating the systemd service units for the docker snap (and other similar snaps), snapd...","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.","severity":{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00256,"percentile":0.17418,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-269"],"published":"2021-02-10T00:00:00Z","modified":"2026-10-26T12:02:42Z","fixes":[{"ecosystem":"Debian:12","package":"snapd","fixed_in":["2.49-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"snapd","fixed_in":["2.49-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"snapd","fixed_in":["2.49-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"snapd","fixed_in":["2.48.3"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"snapd","fixed_in":["2.48.3+18.04"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"snapd","fixed_in":["2.48.3+20.04"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.49-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.49-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.49-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.3"}]}],"versions":["1.9","1.9.1.1","1.9.2","2.0","2.0.1","2.0.2","2.0.3","2.0.5","2.0.8","2.0.9","2.0.10","2.11+0.16.04","2.12+0.16.04","2.13","2.14.2~16.04","2.15.2ubuntu1","2.16ubuntu3","2.17.1ubuntu1","2.20.1ubuntu1","2.21","2.22.2","2.22.3","2.22.6","2.23.1","2.24.1","2.25","2.26.10","2.27.5","2.28.5","2.29.4.2","2.32.3.2","2.32.9","2.33.1ubuntu2","2.34.2","2.34.2ubuntu0.1","2.37.4","2.37.4ubuntu0.1","2.38","2.39.2","2.39.2ubuntu0.2","2.40","2.42.1","2.45.1","2.45.1ubuntu0.2","2.46.1","2.47.1","2.48"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.3+18.04"}]}],"versions":["2.28.5+17.10","2.29.4.1+18.04","2.29.4.2+18.04","2.31.1+18.04","2.32+18.04~pre5","2.32+18.04~pre6","2.32+18.04","2.32.3.2+18.04","2.32.5+18.04","2.32.8+18.04","2.32.9+18.04","2.33.1+18.04ubuntu2","2.34.2+18.04","2.34.2+18.04.1","2.37.1+18.04","2.37.1.1+18.04","2.37.4+18.04","2.37.4+18.04.1","2.38+18.04","2.39.2+18.04","2.40+18.04","2.42.1+18.04","2.45.1+18.04","2.45.1+18.04.2","2.46.1+18.04","2.47.1+18.04","2.48+18.04"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.3+20.04"}]}],"versions":["2.41+19.10.1","2.42.1+20.04","2.43.3+git1.8109f8","2.44~pre1+20.04","2.44+20.04","2.44.2+20.04","2.44.3+20.04","2.45.1+20.04","2.45.1+20.04.2","2.46.1+20.04","2.47.1+20.04","2.48+20.04"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.3"}]}],"versions":["1.9","1.9.1.1","1.9.2","2.0","2.0.1","2.0.2","2.0.3","2.0.5","2.0.8","2.0.9","2.0.10","2.11+0.16.04","2.12+0.16.04","2.13","2.14.2~16.04","2.15.2ubuntu1","2.16ubuntu3","2.17.1ubuntu1","2.20.1ubuntu1","2.21","2.22.2","2.22.3","2.22.6","2.23.1","2.24.1","2.25","2.26.10","2.27.5","2.28.5","2.29.4.2","2.32.3.2","2.32.9","2.33.1ubuntu2","2.34.2","2.34.2ubuntu0.1","2.37.4","2.37.4ubuntu0.1","2.38","2.39.2","2.39.2ubuntu0.2","2.40","2.42.1","2.45.1","2.45.1ubuntu0.2","2.46.1","2.47.1","2.48"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.3+18.04"}]}],"versions":["2.28.5+17.10","2.29.4.1+18.04","2.29.4.2+18.04","2.31.1+18.04","2.32+18.04~pre5","2.32+18.04~pre6","2.32+18.04","2.32.3.2+18.04","2.32.5+18.04","2.32.8+18.04","2.32.9+18.04","2.33.1+18.04ubuntu2","2.34.2+18.04","2.34.2+18.04.1","2.37.1+18.04","2.37.1.1+18.04","2.37.4+18.04","2.37.4+18.04.1","2.38+18.04","2.39.2+18.04","2.40+18.04","2.42.1+18.04","2.45.1+18.04","2.45.1+18.04.2","2.46.1+18.04","2.47.1+18.04","2.48+18.04"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"snapd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.3+20.04"}]}],"versions":["2.41+19.10.1","2.42.1+20.04","2.43.3+git1.8109f8","2.44~pre1+20.04","2.44+20.04","2.44.2+20.04","2.44.3+20.04","2.45.1+20.04","2.45.1+20.04.2","2.46.1+20.04","2.47.1+20.04","2.48+20.04"]}],"products":[{"vendor":"canonical","product":"snapd"},{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"canonical ltd.","product":"snapd"}],"references":[{"url":"https://bugs.launchpad.net/snapd/+bug/1910456","tags":["issue-tracking","x_transferred","Exploit","Issue Tracking","report"]},{"url":"https://ubuntu.com/security/notices/USN-4728-1","tags":["vendor-advisory","x_transferred","Vendor Advisory","advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-27352","tags":["issue-tracking","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27352"},{"url":"https://github.com/advisories/GHSA-3hqj-7v65-62fj"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-27352","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-27352","tags":["report"]}],"sources":{"cve":[{"id":"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.","status":"published","published":"2024-06-21T20:06:37.992Z","modified":"2024-08-04T16:11:36.612Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:35:53.552996Z"}],"euvd":[{"id":"EUVD-2020-19864","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.","status":"published","published":"2024-06-21T20:06:37Z","modified":"2024-08-04T16:11:36Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T03:07:12.940476Z"}],"ghsa":[{"id":"GHSA-3hqj-7v65-62fj","title":"When generating the systemd service units for the docker snap (and other similar snaps), snapd...","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.","status":"published","published":"2024-06-21T21:33:58Z","modified":"2024-07-11T15:30:43Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:57:40.937292Z"}],"nvd":[{"id":"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.","status":"published","published":"2024-06-21T20:15:10.63Z","modified":"2026-06-17T03:09:09.993Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:06:47.910346Z"}],"osv":[{"id":"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.","status":"published","published":"2024-06-21T20:15:10.63Z","modified":"2026-10-24T10:30:20.343459286Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.248747Z"},{"id":"DEBIAN-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.","status":"published","published":"2024-06-21T20:15:10.63Z","modified":"2026-10-26T12:02:42.010008491Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"UBUNTU-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.","status":"published","published":"2021-02-10T00:00:00Z","modified":"2026-02-04T02:19:39.742743Z","cvss":[{"version":"3.1","score":9.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:24.541803Z"},{"id":"USN-4728-1","title":"snapd vulnerability","description":"Gilad Reti and Nimrod Stoler discovered that snapd did not correctly specify cgroup\ndelegation when generating systemd service units for various container\nmanagement snaps. This could allow a local attacker to escalate privileges\nvia access to arbitrary devices of the container host from within a\ncompromised or malicious container.\n","status":"published","published":"2021-02-10T01:14:00Z","modified":"2026-02-10T04:42:03Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}