CVE-2020-15247

Twig Sandbox Escape by authenticated users with access to editing CMS templates when safemode is enabled.

Severity Score

5.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, an authenticated backend user with the cms.manage_pages, cms.manage_layouts, or cms.manage_partials permissions who would normally not be permitted to provide PHP code to be executed by the CMS due to cms.enableSafeMode being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write & manage PHP within the CMS by not having cms.enableSafeMode enabled, but would be a problem for anyone relying on cms.enableSafeMode to ensure that users with those permissions in production do not have access to write & execute arbitrary PHP. Issue has been patched in Build 469 (v1.0.469) and v1.1.0.

October es una plataforma CMS gratuita, de código abierto y autohosteada basada en Laravel PHP Framework. En October CMS desde la versión 1.0.319 y anterior a versión 1.0.469, un usuario del backend autenticado con los permisos cms.manage_pages, cms.manage_layouts o cms.manage_partials que normalmente no estaría autorizado a proporcionar código PHP para ser ejecutado por el CMS debido a que cms.enableSafeMode está habilitado, es capaz de escribir código específico de Twig para escapar del sandbox de Twig y ejecutar PHP arbitrario. Esto no es un problema para cualquiera que confíe en sus usuarios con esos permisos para escribir y administrar PHP normalmente dentro del CMS al no tener cms.enableSafeMode habilitado, pero sería un problema para cualquiera que confíe en cms.enableSafeMode para asegurarse de que los usuarios con esos permisos en producción no poseen acceso para escribir y ejecutar PHP arbitrario

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-06-25 CVE Reserved
2020-11-23 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-862: Missing Authorization

CAPEC

References (2)

URL	Tag	Source
https://github.com/octobercms/october/security/advisories/GHSA-94vp-rmqv-5875	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/octobercms/october/commit/4c650bb775ab849e48202a4923bac93bd74f9982	2021-11-18

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Octobercms Search vendor "Octobercms"		October Search vendor "Octobercms" for product "October"				>= 1.0.319 < 1.0.469 Search vendor "Octobercms" for product "October" and version " >= 1.0.319 < 1.0.469"		-		Affected