CVE-2021-32801

Exceptions may have logged Encryption-at-Rest key content in Nextcloud server

Severity Score

5.5

*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 personal cloud. In affected versions logging of exceptions may have resulted in logging potentially sensitive key material for the Nextcloud Encryption-at-Rest functionality. It is recommended that the Nextcloud Server is upgraded to 20.0.12, 21.0.4 or 22.1.0. If upgrading is not an option users are advised to disable system logging to resolve this issue until such time that an upgrade can be performed Note that ff you do not use the Encryption-at-Rest functionality of Nextcloud you are not affected by this bug.

El servidor Nextcloud es una nube personal de código abierto y autoalojada. En las versiones afectadas el registro de excepciones puede haber resultado en un registro de material clave potencialmente confidencial para la funcionalidad Nextcloud Encryption-at-Rest. Se recomienda actualizar el servidor Nextcloud a versión 20.0.12, 21.0.4 o 22.1.0. Si la actualización no es una opción, se recomienda a usuarios deshabilitar el registro del sistema para resolver este problema hasta que se pueda llevar acabo una actualización. Tenga en cuenta que si no usa la funcionalidad Encryption-at-Rest de Nextcloud no estará afectado por este fallo

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-12 CVE Reserved
2021-09-07 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-532: Insertion of Sensitive Information into Log File

CAPEC

References (3)

URL	Tag	Source
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mcpf-v65v-359h	Third Party Advisory
https://github.com/nextcloud/server/pull/28082	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://security.gentoo.org/glsa/202208-17	2022-09-27

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"				< 20.0.12 Search vendor "Nextcloud" for product "Nextcloud Server" and version " < 20.0.12"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 21.0.0 < 21.0.4 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 21.0.0 < 21.0.4"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 22.0.0 < 22.1.0 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 22.0.0 < 22.1.0"		-		Affected