CVE-2023-45148

Rate limiter not working reliable when Memcached is installed in Nextcloud

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

Nextcloud is an open source home cloud server. When Memcached is used as `memcache.distributed` the rate limiting in Nextcloud Server could be reset unexpectedly resetting the rate count earlier than intended. Users are advised to upgrade to versions 25.0.11, 26.0.6 or 27.1.0. Users unable to upgrade should change their config setting `memcache.distributed` to `\OC\Memcache\Redis` and install Redis instead of Memcached.

Nextcloud es un servidor en la nube doméstico de código abierto. Cuando Memcached se utiliza como `memcache.distributed`, el límite de velocidad en Nextcloud Server podría restablecerse inesperadamente restableciendo el recuento del ratio antes de lo previsto. Se recomienda a los usuarios que actualicen a las versiones 25.0.11, 26.0.6 o 27.1.0. Los usuarios que no puedan actualizar deben cambiar su configuración `memcache.distributed` a `\OC\Memcache\Redis` e instalar Redis en lugar de Memcached.

*Credits: N/A

CVSS Scores

NISTv3.1 4.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-10-04 CVE Reserved
2023-10-16 CVE Published
2024-09-16 CVE Updated
2024-10-22 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-307: Improper Restriction of Excessive Authentication Attempts

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/nextcloud/server/pull/40293	2023-10-20

URL	Date	SRC
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xmhp-7vr4-hp63	2023-10-20

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"				>= 22.0.0 < 22.2.10.16 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 22.0.0 < 22.2.10.16"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 23.0.0 < 23.0.12.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.12.11"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 24.0.0 < 24.0.12.7 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.12.7"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 25.0.0 < 25.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.11"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 25.0.0 < 25.0.11 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.11"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 26.0.0 < 26.0.6 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 26.0.0 < 26.0.6"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				>= 26.0.0 < 26.0.6 Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 26.0.0 < 26.0.6"		enterprise		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				27.0.0 Search vendor "Nextcloud" for product "Nextcloud Server" and version "27.0.0"		-		Affected
Nextcloud Search vendor "Nextcloud"		Nextcloud Server Search vendor "Nextcloud" for product "Nextcloud Server"				27.0.0 Search vendor "Nextcloud" for product "Nextcloud Server" and version "27.0.0"		enterprise		Affected