UBUNTU-CVE-2021-44223

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Source

https://ubuntu.com/security/CVE-2021-44223

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-44223.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-44223

Upstream

CVE-2021-44223

Published

2021-11-25T15:15:00Z

Modified

2025-10-24T04:50:37Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

WordPress before 5.8 lacks support for the Update URI plugin header. This makes it easier for remote attackers to execute arbitrary code via a supply-chain attack against WordPress installations that use any plugin for which the slug satisfies the naming constraints of the WordPress.org Plugin Directory but is not yet present in that directory.

References

Affected packages

Ubuntu:16.04:LTS / wordpress

Package

Name: wordpress
Purl: pkg:deb/ubuntu/wordpress@4.4.2+dfsg-1ubuntu1?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.3+dfsg-1

4.3.1+dfsg-1

4.4+dfsg-1

4.4.1+dfsg-1

4.4.2+dfsg-1

4.4.2+dfsg-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "wordpress",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
        },
        {
            "binary_name": "wordpress-l10n",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
        },
        {
            "binary_name": "wordpress-theme-twentyfifteen",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
        },
        {
            "binary_name": "wordpress-theme-twentyfourteen",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
        },
        {
            "binary_name": "wordpress-theme-twentysixteen",
            "binary_version": "4.4.2+dfsg-1ubuntu1"
        }
    ]
}

Ubuntu:18.04:LTS / wordpress

Package

Name: wordpress
Purl: pkg:deb/ubuntu/wordpress@4.9.5+dfsg1-1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.8.2+dfsg-2

4.8.3+dfsg-1

4.9.1+dfsg-1

4.9.2+dfsg-1

4.9.4+dfsg-1

4.9.5+dfsg1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "wordpress",
            "binary_version": "4.9.5+dfsg1-1"
        },
        {
            "binary_name": "wordpress-l10n",
            "binary_version": "4.9.5+dfsg1-1"
        },
        {
            "binary_name": "wordpress-theme-twentyfifteen",
            "binary_version": "4.9.5+dfsg1-1"
        },
        {
            "binary_name": "wordpress-theme-twentyseventeen",
            "binary_version": "4.9.5+dfsg1-1"
        },
        {
            "binary_name": "wordpress-theme-twentysixteen",
            "binary_version": "4.9.5+dfsg1-1"
        }
    ]
}

Ubuntu:20.04:LTS / wordpress

Package

Name: wordpress
Purl: pkg:deb/ubuntu/wordpress@5.3.2+dfsg1-1ubuntu1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.2.2+dfsg1-1

5.2.4+dfsg1-1

5.3.2+dfsg1-1

5.3.2+dfsg1-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "wordpress",
            "binary_version": "5.3.2+dfsg1-1ubuntu1"
        },
        {
            "binary_name": "wordpress-l10n",
            "binary_version": "5.3.2+dfsg1-1ubuntu1"
        },
        {
            "binary_name": "wordpress-theme-twentynineteen",
            "binary_version": "5.3.2+dfsg1-1ubuntu1"
        },
        {
            "binary_name": "wordpress-theme-twentyseventeen",
            "binary_version": "5.3.2+dfsg1-1ubuntu1"
        },
        {
            "binary_name": "wordpress-theme-twentysixteen",
            "binary_version": "5.3.2+dfsg1-1ubuntu1"
        }
    ]
}