Lucene search

GitHub_MCVE-2021-41177

HistoryOct 25, 2021 - 10:15 p.m.

CVE-2021-41177

2021-10-2522:15:07

CWE-799

GitHub_M

web.nvd.nist.gov

nextcloud

nextcloud server

rate-limiting

database backend

security vulnerability

cve-2021-41177

nvd

CVSS2

5.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.7

Confidence

High

EPSS

0.004

Percentile

74.2%

JSON

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.

Affected configurations

Nvd

Vulners

Node

nextcloudnextcloud_serverRange<20.0.13

nextcloudnextcloud_serverRange21.0.0–21.0.5

nextcloudnextcloud_serverRange22.0.0–22.2.0

VendorProductVersionCPE
nextcloudnextcloud_server*cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
nextcloud	nextcloud_server	*	cpe:2.3:a:nextcloud:nextcloud_server::::::::

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 20.0.13"
      },
      {
        "status": "affected",
        "version": ">= 21.0.0, < 21.0.5"
      },
      {
        "status": "affected",
        "version": "< 22.2.0"
      }
    ]
  }
]