USN-5292-3

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Source
https://ubuntu.com/security/notices/USN-5292-3
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5292-3.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-5292-3
Upstream
Related
Published
2022-02-18T02:21:20.350668Z
Modified
2025-10-13T04:35:47Z
Summary
snapd vulnerabilities
Details

USN-5292-1 fixed several vulnerabilities in snapd. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

James Troup discovered that snap did not properly manage the permissions for the snap directories. A local attacker could possibly use this issue to expose sensitive information. (CVE-2021-3155)

Ian Johnson discovered that snapd did not properly validate content interfaces and layout paths. A local attacker could possibly use this issue to inject arbitrary AppArmor policy rules, resulting in a bypass of intended access restrictions. (CVE-2021-4120)

The Qualys Research Team discovered that snapd did not properly validate the location of the snap-confine binary. A local attacker could possibly use this issue to execute other arbitrary binaries and escalate privileges. (CVE-2021-44730)

The Qualys Research Team discovered that a race condition existed in the snapd snap-confine binary when preparing a private mount namespace for a snap. A local attacker could possibly use this issue to escalate privileges and execute arbitrary code. (CVE-2021-44731)

References

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

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-4120",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-44730",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/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": "Ubuntu",
                    "score": "high"
                }
            ]
        },
        {
            "id": "CVE-2021-44731",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}

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 

{
    "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"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-3155",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-4120",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2021-44730",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/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": "Ubuntu",
                    "score": "high"
                }
            ]
        },
        {
            "id": "CVE-2021-44731",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}