usn-4728-1
Vulnerability from osv_ubuntu
Published
2021-02-10 01:14
Modified
2026-02-10 04:42
Summary
snapd vulnerability
Details
Gilad Reti and Nimrod Stoler discovered that snapd did not correctly specify cgroup delegation when generating systemd service units for various container management snaps. This could allow a local attacker to escalate privileges via access to arbitrary devices of the container host from within a compromised or malicious container.
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-27352",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.48.3"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.48.3"
},
{
"binary_name": "snap-confine",
"binary_version": "2.48.3"
},
{
"binary_name": "snapd",
"binary_version": "2.48.3"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.48.3"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.48.3"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.48.3"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.48.3"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.48.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "snapd",
"purl": "pkg:deb/ubuntu/snapd@2.48.3?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.48.3"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-27352",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "snap-confine",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "snapd",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.48.3+18.04"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.48.3+18.04"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "snapd",
"purl": "pkg:deb/ubuntu/snapd@2.48.3+18.04?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.48.3+18.04"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-27352",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "snap-confine",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "snapd",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.48.3+20.04"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.48.3+20.04"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "snapd",
"purl": "pkg:deb/ubuntu/snapd@2.48.3+20.04?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.48.3+20.04"
}
],
"type": "ECOSYSTEM"
}
],
"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"
]
}
],
"aliases": [],
"details": "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",
"id": "USN-4728-1",
"modified": "2026-02-10T04:42:03Z",
"published": "2021-02-10T01:14:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4728-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-27352"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "snapd vulnerability",
"upstream": [
"UBUNTU-CVE-2020-27352"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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