UBUNTU-CVE-2021-3155

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Source
https://ubuntu.com/security/CVE-2021-3155
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-3155.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-3155
Upstream
Downstream
Related
Published
2021-01-13T00:00:00Z
Modified
2025-10-15T16:50:09Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 3.8 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

References

Affected packages

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
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.54.3+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 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.54.3+16.04~esm2",
            "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"
        }
    ]
}

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
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.54.3+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 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.54.3+18.04",
            "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"
        }
    ]
}

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
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.54.3+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 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.54.3+20.04.1",
            "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"
        }
    ]
}