CVE-2023-48304

Nextcloud Server vulnerable to attacker enabling/disabling birthday calendar for any user

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and starting in version 22.0.0 and prior to versions 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Enterprise Server, an attacker could enable and disable the birthday calendar for any user on the same server. Nextcloud Server 25.0.11, 26.0.6, and 27.1.0 and Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 contain patches for this issue. No known workarounds are available.

Nextcloud Server proporciona almacenamiento de datos para Nextcloud, una plataforma en la nube de código abierto. A partir de la versión 25.0.0 y anteriores a las versiones 25.0.11, 26.0.6 y 27.1.0 de Nextcloud Server y a partir de la versión 22.0.0 y anteriores a las versiones 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0. 11, 26.0.6 y 27.1.0 de Nextcloud Enterprise Server, un atacante podría habilitar y deshabilitar el calendario de cumpleaños para cualquier usuario en el mismo servidor. Nextcloud Server 25.0.11, 26.0.6 y 27.1.0 y Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6 y 27.1.0 contienen parches para este problema. No hay workarounds conocidos disponibles.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-11-14 CVE Reserved
2023-11-21 CVE Published
2023-12-02 EPSS Updated
2024-08-02 CVE Updated
2024-08-02 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-639: Authorization Bypass Through User-Controlled Key

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC
https://hackerone.com/reports/2112973	2024-08-02

URL	Date	SRC
https://github.com/nextcloud/server/pull/40292	2023-12-01

URL	Date	SRC
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8jwv-c8c8-9fr3	2023-12-01

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 22.0.0 <= 22.2.10.16 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 22.0.0 <= 22.2.10.16"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 23.0.0 < 23.0.12.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.12.11"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 24.0.0 < 24.0.12.7 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.12.7"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 25.0.0 < 25.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.11"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 25.0.0 < 25.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.11"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 26.0.0 < 26.0.6 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 26.0.0 < 26.0.6"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 26.0.0 < 26.0.6 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 26.0.0 < 26.0.6"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 27.0.0 < 27.1.0 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 27.0.0 < 27.1.0"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 27.0.0 < 27.1.0 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 27.0.0 < 27.1.0"		enterprise		Affected