CVE-2022-24741

High memory usage in Nextcloud server

Severity Score

6.5

*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, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag.

El servidor Nextcloud es una plataforma de servicios de código abierto, de estilo de nube autoalojada. En las versiones afectadas, un atacante puede causar una denegación de servicio mediante la carga de archivos especialmente diseñados que harán que el servidor asigne demasiada memoria / CPU. Se recomienda actualizar el servidor Nextcloud a la versión 21.0.8 , 22.2.4 o 23.0.1. Los usuarios que no puedan actualizarse deberán desactivar la generación de vistas previas con la bandera de configuración `'enable_previews''

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-02-10 CVE Reserved
2022-03-09 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-11-22 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (4)

URL	Tag	Source
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jf3h-xf4q-mh89	Third Party Advisory

URL	Date	SRC
https://hackerone.com/reports/1261225	2024-08-03

URL	Date	SRC
https://github.com/nextcloud/server/pull/30291	2023-06-30

URL	Date	SRC
https://security.gentoo.org/glsa/202208-17	2023-06-30

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"				>= 21.0.0 < 21.0.8 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 21.0.0 < 21.0.8"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 22.0.0 < 22.2.4 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 22.0.0 < 22.2.4"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				23.0.0 Search vendor "Nextcloud" for product "Nextcloud Server" and version "23.0.0"		-		Affected