CVE-2021-44223

Severity

98%

Complexity

39%

Confidentiality

98%

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.

CVSS 3.1 Base Score 9.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P).

Overview

First reported 3 years ago

2021-11-25 15:15:00

Last updated 3 years ago

2021-11-30 07:16:00

Affected Software

WordPress

References

https://make.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8/

https://vavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/

https://make.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8/

Release Notes, Vendor Advisory

https://vavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/

Exploit, Third Party Advisory

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