USN-5100-1

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Source
https://ubuntu.com/security/notices/USN-5100-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5100-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5100-1
Upstream
Related
Published
2021-10-04T16:51:49.703579Z
Modified
2025-10-13T04:35:38Z
Summary
containerd vulnerability
Details

It was discovered that containerd insufficiently restricted permissions on container root and plugin directories. If a user or automated system were tricked into launching a specially crafted container image, a remote attacker could traverse directory contents and modify files and execute programs on the host filesystem, possibly leading to privilege escalation.

References

Affected packages

Ubuntu:18.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.2-0ubuntu1~18.04.3?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.2-0ubuntu1~18.04.3

Affected versions

0.*

0.2.5-0ubuntu2

1.*

1.2.6-0ubuntu1~18.04.1
1.2.6-0ubuntu1~18.04.2
1.3.3-0ubuntu1~18.04.1
1.3.3-0ubuntu1~18.04.2
1.3.3-0ubuntu1~18.04.3
1.3.3-0ubuntu1~18.04.4
1.4.4-0ubuntu1~18.04.2
1.5.2-0ubuntu1~18.04.1
1.5.2-0ubuntu1~18.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "containerd",
            "binary_version": "1.5.2-0ubuntu1~18.04.3"
        },
        {
            "binary_name": "golang-github-containerd-containerd-dev",
            "binary_version": "1.5.2-0ubuntu1~18.04.3"
        },
        {
            "binary_name": "golang-github-docker-containerd-dev",
            "binary_version": "1.5.2-0ubuntu1~18.04.3"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-41103",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}

Ubuntu:20.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.2-0ubuntu1~20.04.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.2-0ubuntu1~20.04.3

Affected versions

1.*

1.2.10-0ubuntu1
1.3.2-0ubuntu1
1.3.3-0ubuntu1
1.3.3-0ubuntu2
1.3.3-0ubuntu2.1
1.3.3-0ubuntu2.2
1.3.3-0ubuntu2.3
1.4.4-0ubuntu1~20.04.2
1.5.2-0ubuntu1~20.04.1
1.5.2-0ubuntu1~20.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "containerd",
            "binary_version": "1.5.2-0ubuntu1~20.04.3"
        },
        {
            "binary_name": "golang-github-containerd-containerd-dev",
            "binary_version": "1.5.2-0ubuntu1~20.04.3"
        },
        {
            "binary_name": "golang-github-docker-containerd-dev",
            "binary_version": "1.5.2-0ubuntu1~20.04.3"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-41103",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "high"
                }
            ]
        }
    ]
}