NVD

CVE-2021-41177 Detail

Description

Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, Nextcloud Server did not implement a database backend for rate-limiting purposes. Any component of Nextcloud using rate-limits (as as `AnonRateThrottle` or `UserRateThrottle`) was thus not rate limited on instances not having a memory cache backend configured. In the case of a default installation, this would notably include the rate-limits on the two factor codes. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5, or 22.2.0. As a workaround, enable a memory cache backend in `config.php`.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: GitHub, Inc.

Base Score: 8.1 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.5 MEDIUM

Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4qx4-m3f2	Third Party Advisory
https://github.com/nextcloud/server/pull/28728	Patch Third Party Advisory
https://hackerone.com/reports/1265709	Permissions Required Third Party Advisory
https://security.gentoo.org/glsa/202208-17	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-799	Improper Control of Interaction Frequency	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Initial Analysis by NIST 10/28/2021 10:54:01 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR cpe:2.3:a:nextcloud:nextcloud_server::::::::* versions up to (excluding) 20.0.13 cpe:2.3:a:nextcloud:nextcloud_server::::::::* versions from (including) 21.0.0 up to (excluding) 21.0.5 cpe:2.3:a:nextcloud:nextcloud_server::::::::* versions from (including) 22.0.0 up to (excluding) 22.2.0
Added	CVSS V2		NIST (AV:N/AC:L/Au:S/C:P/I:N/A:P)
Changed	Reference Type	https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4qx4-m3f2 No Types Assigned	https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4qx4-m3f2 Third Party Advisory
Changed	Reference Type	https://github.com/nextcloud/server/pull/28728 No Types Assigned	https://github.com/nextcloud/server/pull/28728 Patch, Third Party Advisory
Changed	Reference Type	https://hackerone.com/reports/1265709 No Types Assigned	https://hackerone.com/reports/1265709 Permissions Required, Third Party Advisory

Quick Info

CVE Dictionary Entry:
CVE-2021-41177
NVD Published Date:
10/25/2021
NVD Last Modified:
10/26/2022
Source:
GitHub, Inc.

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Information Technology Laboratory

National Vulnerability Database