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GitHub_MCVE-2021-41239

HistoryMar 08, 2022 - 6:15 p.m.

CVE-2021-41239

2022-03-0818:15:07

CWE-200

CWE-862

GitHub_M

web.nvd.nist.gov

nextcloud

nextcloud server

user status api

vulnerability

cve-2021-41239

security update

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.3

Confidence

High

EPSS

0.001

Percentile

37.6%

JSON

Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.

Affected configurations

Nvd

Vulners

Node

nextcloudnextcloud_serverRange<20.0.14

nextcloudnextcloud_serverRange21.0.0–21.0.6

nextcloudnextcloud_serverMatch22.2.0

VendorProductVersionCPE
nextcloudnextcloud_server*cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloudnextcloud_server22.2.0cpe:2.3:a:nextcloud:nextcloud_server:22.2.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
nextcloud	nextcloud_server	*	cpe:2.3:a:nextcloud:nextcloud_server::::::::
nextcloud	nextcloud_server	22.2.0	cpe:2.3:a:nextcloud:nextcloud_server:22.2.0:::::::*

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 20.0.14"
      },
      {
        "status": "affected",
        "version": ">= 21.0.0, < 21.0.6"
      },
      {
        "status": "affected",
        "version": ">= 22.2.0, < 22.2.1"
      }
    ]
  }
]