CVE

CVE-2020-15247

Date: (C)2020-11-24   (M)2023-12-22

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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:		CVSS V2 Severity:
CVSS Score : 5.2		CVSS Score : 4.4
Exploit Score: 1.1		Exploit Score: 3.4
Impact Score: 3.7		Impact Score: 6.4
CVSS V3 Metrics:		CVSS V2 Metrics:
Attack Vector: LOCAL		Access Vector: LOCAL
Attack Complexity: LOW		Access Complexity: MEDIUM
Privileges Required: HIGH		Authentication: NONE
User Interaction: REQUIRED		Confidentiality: PARTIAL
Scope: CHANGED		Integrity: PARTIAL
Confidentiality: LOW		Availability: PARTIAL
Integrity: LOW
Availability: LOW

Reference:

https://github.com/octobercms/october/commit/4c650bb775ab849e48202a4923bac93bd74f9982

https://github.com/octobercms/october/security/advisories/GHSA-94vp-rmqv-5875