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[email protected]CVE-2021-22877

HistoryMar 03, 2021 - 6:15 p.m.

CVE-2021-22877

2021-03-0318:15:14

CWE-284

CWE-862

[email protected]

web.nvd.nist.gov

cve-2021-22877

nextcloud

user check

credentials

external storage

configuration

security vulnerability

5.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

6.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

50.3%

JSON

A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user’s own credentials for other users external storage configuration when not already configured yet.

Affected configurations

NVD

Node

nextcloudnextcloud_serverRange<20.0.6

Node

fedoraprojectfedoraMatch34

CPENameOperatorVersion
nextcloud:nextcloud_servernextcloud nextcloud serverlt20.0.6

CPE	Name	Operator	Version
nextcloud:nextcloud_server	nextcloud nextcloud server	lt	20.0.6

CNA Affected

[
  {
    "product": "Nextcloud Server",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in 20.0.6"
      }
    ]
  }
]