UBUNTU-CVE-2021-41103

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2021-41103
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41103.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-41103
Related
Published
2021-10-04T00:00:00Z
Modified
2021-10-04T00:00:00Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

containerd is an open source container runtime with an emphasis on simplicity, robustness and portability. A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files. This vulnerability has been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are released and may restart containers or update directory permissions to mitigate the vulnerability. Users unable to update should limit access to the host to trusted users. Update directory permission on container bundles directories.

References

Affected packages

Ubuntu:Pro:16.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.2.6-0ubuntu1~16.04.6+esm2?arch=src?distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.2.6-0ubuntu1~16.04.6+esm2

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

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "golang-github-docker-containerd-dev": "1.2.6-0ubuntu1~16.04.6+esm2",
            "containerd": "1.2.6-0ubuntu1~16.04.6+esm2"
        }
    ]
}

Ubuntu:18.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.2-0ubuntu1~18.04.3?arch=src?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",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "golang-github-containerd-containerd-dev": "1.5.2-0ubuntu1~18.04.3",
            "golang-github-docker-containerd-dev": "1.5.2-0ubuntu1~18.04.3",
            "containerd": "1.5.2-0ubuntu1~18.04.3",
            "containerd-dbgsym": "1.5.2-0ubuntu1~18.04.3"
        }
    ]
}

Ubuntu:20.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.2-0ubuntu1~20.04.3?arch=src?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",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "golang-github-containerd-containerd-dev": "1.5.2-0ubuntu1~20.04.3",
            "golang-github-docker-containerd-dev": "1.5.2-0ubuntu1~20.04.3",
            "containerd": "1.5.2-0ubuntu1~20.04.3",
            "containerd-dbgsym": "1.5.2-0ubuntu1~20.04.3"
        }
    ]
}

Ubuntu:22.04:LTS / containerd

Package

Name
containerd
Purl
pkg:deb/ubuntu/containerd@1.5.5-0ubuntu3?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.5-0ubuntu3

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "high",
    "binaries": [
        {
            "golang-github-containerd-containerd-dev": "1.5.5-0ubuntu3",
            "containerd": "1.5.5-0ubuntu3",
            "containerd-dbgsym": "1.5.5-0ubuntu3"
        }
    ]
}