CVE-2021-22966

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Privilege escalation from Editor to Admin using Groups in Concrete CMS versions 8.5.6 and below. If a group is granted "view" permissions on the bulkupdate page, then users in that group can escalate to being an administrator with a specially crafted curl. Fixed by adding a check for group permissions before allowing a group to be moved. Concrete CMS Security team CVSS scoring: 7.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HCredit for discovery: "Adrian Tiron from FORTBRIDGE ( https://www.fortbridge.co.uk/ )"This fix is also in Concrete version 9.0.0

Una escalada de privilegios de Editor a Administrador usando Grupos en Concrete CMS versiones 8.5.6 e inferiores. Si a un grupo le es concedido permisos "view" en la página de bulkupdate, entonces usuarios de ese grupo pueden escalar a ser un administrador con un curl especialmente diseñado. Ha sido corregido añadiendo una comprobación de los permisos de grupo antes de permitir que sea movido un grupo. Puntuación CVSS del equipo de seguridad de CMS concreto: 7.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HCredit for discovery: "Adrian Tiron de FORTBRIDGE ( https://www.fortbridge.co.uk/ ) "Esta corrección también está en Concrete versión 9.0.0

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

2021-01-06 CVE Reserved
2021-11-19 CVE Published
2023-06-12 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-863: Incorrect Authorization

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes	2022-07-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Concretecms Search vendor "Concretecms"		Concrete Cms Search vendor "Concretecms" for product "Concrete Cms"				< 8.5.7 Search vendor "Concretecms" for product "Concrete Cms" and version " < 8.5.7"		-		Affected