CVE-2020-26255

PHP Phar archives could be uploaded and executed in Kirby

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.

Kirby es un CMS. En Kirby CMS (getkirby/cms) anterior a la versión 3.4.5 y Kirby Panel anterior a la versión 2.5.14, un editor con acceso completo a Kirby Panel puede cargar un archivo PHP .phar y ejecutarlo en el servidor. Esta vulnerabilidad es crítica si puede tener atacantes potenciales en su grupo de usuarios autenticados de Panel, ya que pueden conseguir acceso al servidor con dicho archivo Phar. Los visitantes sin acceso a Panel *cannot* usar este vector de ataque. El problema ha sido parcheado en Kirby versión 2.5.14 y Kirby versión 3.4.5. Actualice a uno de estas o una versión posterior para corregir la vulnerabilidad. Nota: Kirby versión 2 llega al final de su vida útil el 31 de diciembre de 2020. Por lo tanto, recomendamos actualizar sus sitios de Kirby versión 2 a Kirby versión 3. Si no puede actualizar, recomendamos actualizar a Kirby 2.5.14

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-01 CVE Reserved
2020-12-08 CVE Published
2023-11-27 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-434: Unrestricted Upload of File with Dangerous Type

CAPEC

References (6)

URL	Tag	Source
https://github.com/getkirby/kirby/releases/tag/3.4.5	Release Notes
https://github.com/getkirby/kirby/security/advisories/GHSA-g3h8-cg9x-47qw	Release Notes
https://packagist.org/packages/getkirby/cms	Product
https://packagist.org/packages/getkirby/panel	Product

URL	Date	SRC

URL	Date	SRC
https://github.com/getkirby-v2/panel/commit/5a569d4e3ddaea2b6628d7ec1472a3e8bc410881	2020-12-10
https://github.com/getkirby/kirby/commit/db8f371b13036861c9cc5ba3e85e27f73fce5e09	2020-12-10

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Getkirby Search vendor "Getkirby"		Kirby Search vendor "Getkirby" for product "Kirby"				< 3.4.5 Search vendor "Getkirby" for product "Kirby" and version " < 3.4.5"		-		Affected
Getkirby Search vendor "Getkirby"		Panel Search vendor "Getkirby" for product "Panel"				< 2.5.14 Search vendor "Getkirby" for product "Panel" and version " < 2.5.14"		-		Affected