CVE-2022-39346

Missing length validation of user displayname 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 personal cloud server. Affected versions of nextcloud server did not properly limit user display names which could allow a malicious users to overload the backing database and cause a denial of service. It is recommended that the Nextcloud Server is upgraded to 22.2.10, 23.0.7 or 24.0.3. There are no known workarounds for this issue.

El servidor Nextcloud es un servidor en la nube personal de código abierto. Las versiones afectadas del servidor nextcloud no limitaban adecuadamente los nombres para mostrar de los usuarios, lo que podría permitir que usuarios malintencionados sobrecarguen la base de datos de respaldo y provoquen una denegación de servicio. Se recomienda actualizar el servidor Nextcloud a 22.2.10, 23.0.7 o 24.0.3. No se conocen workarounds para este problema.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

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

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-09-02 CVE Reserved
2022-11-25 CVE Published
2024-07-16 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (5)

URL	Tag	Source
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6w9f-jgjx-4vj6	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/server/pull/33052	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42TARDPRPBTI5TJRBYRVVQGTL6KWRCV5	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R32L3P53AQKQQC652LA5U3AWFTZKPDK3	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRAER4DCCHHSUDFHQ6LTIH4JEJFF73IU	2023-11-07

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 Enterprise Server Search vendor "Nextcloud" for product "Nextcloud Enterprise Server"				< 22.2.10 Search vendor "Nextcloud" for product "Nextcloud Enterprise Server" and version " < 22.2.10"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Enterprise Server Search vendor "Nextcloud" for product "Nextcloud Enterprise Server"				>= 23.0.0 < 23.0.7 Search vendor "Nextcloud" for product "Nextcloud Enterprise Server" and version " >= 23.0.0 < 23.0.7"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Enterprise Server Search vendor "Nextcloud" for product "Nextcloud Enterprise Server"				>= 24.0.0 < 24.0.3 Search vendor "Nextcloud" for product "Nextcloud Enterprise Server" and version " >= 24.0.0 < 24.0.3"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				< 22.2.10 Search vendor "Nextcloud" for product "Nextcloud Server" and version " < 22.2.10"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 23.0.0 < 23.0.7 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.7"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 24.0.0 < 24.0.3 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.3"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				37 Search vendor "Fedoraproject" for product "Fedora" and version "37"		-		Affected