CVE-2021-32657

Malicious user could break user administration page

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 is a Nextcloud package that handles data storage. In versions of Nextcloud Server prior to 10.0.11, 20.0.10, and 21.0.2, a malicious user may be able to break the user administration page. This would disallow administrators to administrate users on the Nextcloud instance. The vulnerability is fixed in versions 19.0.11, 20.0.10, and 21.0.2. As a workaround, administrators can use the OCC command line tool to administrate the Nextcloud users.

Nextcloud Server es un paquete de Nextcloud que administra el almacenamiento de datos. En Nextcloud Server versiones anteriores a 10.0.11, 20.0.10 y 21.0.2, un usuario malicioso puede ser capaz de romper la página de administración de usuarios. Esto impediría a administradores administrar usuarios en la instancia de Nextcloud. La vulnerabilidad ha sido corregida en versiones 19.0.11, 20.0.10 y 21.0.2. Como solución, los administradores pueden usar la herramienta de línea de comandos OCC para administrar los usuarios de Nextcloud

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-12 CVE Reserved
2021-06-01 CVE Published
2023-04-18 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (3)

URL	Tag	Source
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fx62-q47f-f665	Third Party Advisory
https://hackerone.com/reports/1147611	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202208-17	2022-10-26

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"				< 19.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " < 19.0.11"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 20.0.0 < 20.0.10 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 20.0.0 < 20.0.10"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 21.0.0 < 21.0.2 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 21.0.0 < 21.0.2"		-		Affected