UBUNTU-CVE-2021-44730
- Source
- https://ubuntu.com/security/CVE-2021-44730
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44730.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-44730
- Upstream
- Downstream
- Related
- Published
- 2022-02-17T17:00:00Z
- Modified
- 2025-10-15T16:51:40Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Ubuntu - high
- Summary
- [none]
- Details
-
snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
- References
-
- https://ubuntu.com/security/CVE-2021-44730
- https://ubuntu.com/security/notices/USN-5292-1
- https://www.openwall.com/lists/oss-security/2022/02/17/2
- https://github.com/snapcore/snapd/commit/f3f669d720ed8b0bcb73da7789843bf43b5c16cf
- https://www.cve.org/CVERecord?id=CVE-2021-44730
- https://ubuntu.com/security/notices/USN-5292-3
- https://ubuntu.com/security/notices/USN-5292-2
Affected packages
Ubuntu:Pro:14.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.54.3+14.04~esm1?arch=source&distro=trusty/esm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.54.3+14.04~esm1
Affected versions
2.*
2.21~14.04.2
2.22.2~14.04
2.22.3~14.04
2.22.6~14.04
2.23.1~14.04
2.24.1~14.04
2.25~14.04
2.26.10~14.04
2.27.5~14.04
2.28.5~14.04
2.29.4.2~14.04
2.32.3.2~14.04
2.32.9~14.04
2.33.1~14.04
2.34.2~14.04
2.34.2~14.04.1
2.37.4~14.04.1
2.38~14.04
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+14.04~esm1"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+14.04~esm1"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Ubuntu:Pro:16.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.54.3+16.04~esm2?arch=source&distro=esm-infra/xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.54.3+16.04~esm2
Affected versions
1.*
1.9
1.9.1.1
1.9.2
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
2.48.3
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+16.04~esm2"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+16.04~esm2"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Ubuntu:18.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.54.3+18.04?arch=source&distro=bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.54.3+18.04
Affected versions
2.*
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
2.48.3+18.04
2.49.2+18.04
2.51.1+18.04
2.54.2+18.04ubuntu1
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+18.04"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+18.04"
}
],
"availability": "No subscription required"
}
Ubuntu:20.04:LTS / snapd
Package
- Name
- snapd
- Purl
- pkg:deb/ubuntu/snapd@2.54.3+20.04.1?arch=source&distro=focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.54.3+20.04.1
Affected versions
2.*
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
2.48.3+20.04
2.49.2+20.04
2.51.1+20.04ubuntu2
2.54.2+20.04ubuntu2
2.54.3+20.04
Ecosystem specific
{
"binaries": [
{
"binary_name": "golang-github-snapcore-snapd-dev",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "golang-github-ubuntu-core-snappy-dev",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "snap-confine",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "snapd",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "snapd-xdg-open",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-core-launcher",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-core-snapd-units",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-snappy",
"binary_version": "2.54.3+20.04.1"
},
{
"binary_name": "ubuntu-snappy-cli",
"binary_version": "2.54.3+20.04.1"
}
],
"availability": "No subscription required"
}