UBUNTU-CVE-2021-43816

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Source
https://ubuntu.com/security/CVE-2021-43816
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-43816.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-43816
Related
Published
2022-01-05T19:15:00Z
Modified
2025-01-13T10:22:38Z
Severity
  • 9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

containerd is an open source container runtime. On installations using SELinux, such as EL8 (CentOS, RHEL), Fedora, or SUSE MicroOS, with containerd since v1.5.0-beta.0 as the backing container runtime interface (CRI), an unprivileged pod scheduled to the node may bind mount, via hostPath volume, any privileged, regular file on disk for complete read/write access (sans delete). Such is achieved by placing the in-container location of the hostPath volume mount at either /etc/hosts, /etc/hostname, or /etc/resolv.conf. These locations are being relabeled indiscriminately to match the container process-label which effectively elevates permissions for savvy containers that would not normally be able to access privileged host files. This issue has been resolved in version 1.5.9. Users are advised to upgrade as soon as possible.

References

Affected packages

Ubuntu:Pro:16.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.2.6-0ubuntu1~16.04.6+esm4?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.2.1-0ubuntu4~16.04
0.2.3-0ubuntu1~16.04
0.2.5-0ubuntu1~16.04.1

1.*

1.2.6-0ubuntu1~16.04.2
1.2.6-0ubuntu1~16.04.3
1.2.6-0ubuntu1~16.04.4
1.2.6-0ubuntu1~16.04.5
1.2.6-0ubuntu1~16.04.6
1.2.6-0ubuntu1~16.04.6+esm1
1.2.6-0ubuntu1~16.04.6+esm2
1.2.6-0ubuntu1~16.04.6+esm4

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:18.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.9-0ubuntu1~18.04.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.9-0ubuntu1~18.04.1

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
1.5.2-0ubuntu1~18.04.3
1.5.5-0ubuntu3~18.04.1
1.5.5-0ubuntu3~18.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.5.9-0ubuntu1~18.04.1",
            "binary_name": "containerd"
        },
        {
            "binary_version": "1.5.9-0ubuntu1~18.04.1",
            "binary_name": "containerd-dbgsym"
        },
        {
            "binary_version": "1.5.9-0ubuntu1~18.04.1",
            "binary_name": "golang-github-containerd-containerd-dev"
        }
    ]
}

Ubuntu:20.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.9-0ubuntu1~20.04.4?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.9-0ubuntu1~20.04.4

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
1.5.2-0ubuntu1~20.04.3
1.5.5-0ubuntu3~20.04.1
1.5.5-0ubuntu3~20.04.2
1.5.9-0ubuntu1~20.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.5.9-0ubuntu1~20.04.4",
            "binary_name": "containerd"
        },
        {
            "binary_version": "1.5.9-0ubuntu1~20.04.4",
            "binary_name": "containerd-dbgsym"
        },
        {
            "binary_version": "1.5.9-0ubuntu1~20.04.4",
            "binary_name": "golang-github-containerd-containerd-dev"
        }
    ]
}

Ubuntu:22.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.9-0ubuntu1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.9-0ubuntu1

Affected versions

1.*

1.5.5-0ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "1.5.9-0ubuntu1",
            "binary_name": "containerd"
        },
        {
            "binary_version": "1.5.9-0ubuntu1",
            "binary_name": "containerd-dbgsym"
        },
        {
            "binary_version": "1.5.9-0ubuntu1",
            "binary_name": "golang-github-containerd-containerd-dev"
        }
    ]
}