CVE-2022-31118

Missing brute force protection on cloud federation sharing in Nextcloud Server

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Nextcloud server is an open source personal cloud solution. In affected versions an attacker could brute force to find if federated sharing is being used and potentially try to brute force access tokens for federated shares (`a-zA-Z0-9` ^ 15). It is recommended that the Nextcloud Server is upgraded to 22.2.9, 23.0.6 or 24.0.2. Users unable to upgrade may disable federated sharing via the Admin Sharing settings in `index.php/settings/admin/sharing`.

El servidor Nextcloud es una solución de nube personal de código abierto. En las versiones afectadas un atacante podría hacer fuerza bruta para encontrar si está siendo usando el uso compartido federado y potencialmente intentar forzar los tokens de acceso para los recursos compartidos federados (`a-zA-Z0-9" ^ 15). Es recomendado actualizar el servidor Nextcloud a versiones 22.2.9, 23.0.6 o 24.0.2. Los usuarios que no puedan actualizar pueden deshabilitar la compartición federada por medio de la configuración de compartición del administrador en "index.php/settings/admin/sharing"

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-05-18 CVE Reserved
2022-08-04 CVE Published
2024-02-25 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-307: Improper Restriction of Excessive Authentication Attempts
CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (2)

URL	Tag	Source
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vwh-5v93-3vcq	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/server/pull/32843/commits/6eb692da7fe73c899cb6a8d2aa045eddb1f14018	2022-08-10

URL	Date	SRC

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"				< 22.2.9 Search vendor "Nextcloud" for product "Nextcloud Server" and version " < 22.2.9"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 23.0.0 < 23.0.6 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.6"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 24.0.0 < 24.0.2 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.2"		-		Affected