CVE-2023-39960

Nextcloud Server has improper restriction of excessive authentication attempts on WebDAV endpoint

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server starting with 25.0.0 and prior to 25.09 and 26.04; as well as Nextcloud Enterprise Server starting with 22.0.0 and prior to 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, and 26.0.4; missing protection allows an attacker to brute force passwords on the WebDAV API. Nextcloud Server 25.0.9 and 26.0.4 and Nextcloud Enterprise Server 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, and 26.0.4 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. En Nextcloud Server a partir de la versión 25.0.0 y anteriores a las 25.09 y 26.04; así como Nextcloud Enterprise Server a partir de la versión 22.0.0 y anteriores a las 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9 y 26.0.4; La falta de protección permite a un atacante forzar contraseñas de fuerza bruta en la API WebDAV. Nextcloud Server versiones 25.0.9 y 26.0.4 y Nextcloud Enterprise Server versiones 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9 y 26.0.4 contienen parches para este problema. No se conocen workarounds disponibles.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-08-07 CVE Reserved
2023-10-13 CVE Published
2024-09-12 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-307: Improper Restriction of Excessive Authentication Attempts

CAPEC

References (3)

URL	Tag	Source
https://hackerone.com/reports/1924212	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/server/pull/38046	2023-10-18

URL	Date	SRC
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2hrc-5fgp-c9c9	2023-10-18

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 < 22.2.10.14 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 22.0.0 < 22.2.10.14"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 23.0.0 < 23.0.12.9 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.12.9"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 24.0.0 < 24.0.12.5 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.12.5"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 25.0.0 < 25.0.9 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.9"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 25.0.0 < 25.0.9 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.9"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 26.0.0 < 26.0.4 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 26.0.0 < 26.0.4"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 26.0.0 < 26.0.4 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 26.0.0 < 26.0.4"		enterprise		Affected