USN-5292-2

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-5292-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5292-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5292-2
Upstream
Related
Published
2022-02-18T01:07:38.514473Z
Modified
2025-10-15T16:38:17Z
Summary
snapd vulnerabilities
Details

USN-5292-1 fixed vulnerabilities in snapd. This update provides the corresponding update for the riscv64 architecture.

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: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_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"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "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-2021-3155"
            },
            {
                "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-2021-4120"
            },
            {
                "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-2021-44730"
            },
            {
                "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:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "high"
                    }
                ],
                "id": "CVE-2021-44731"
            }
        ]
    }
}