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[email protected]CVE-2020-8293

HistoryJan 26, 2021 - 6:16 p.m.

CVE-2020-8293

2021-01-2618:16:08

CWE-400

[email protected]

web.nvd.nist.gov

119

nextcloud

input validation

workflow rules

ddos

cve-2020-8293

nvd

4 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.2%

JSON

A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules.

Affected configurations

NVD

Node

nextcloudnextcloud_serverRange<18.0.11

nextcloudnextcloud_serverRange19.0.0–19.0.5

nextcloudnextcloud_serverRange20.0.0–20.0.2

CPENameOperatorVersion
nextcloud:nextcloud_servernextcloud nextcloud serverlt18.0.11
nextcloud:nextcloud_servernextcloud nextcloud serverlt19.0.5
nextcloud:nextcloud_servernextcloud nextcloud serverlt20.0.2

CPE	Name	Operator	Version
nextcloud:nextcloud_server	nextcloud nextcloud server	lt	18.0.11
nextcloud:nextcloud_server	nextcloud nextcloud server	lt	19.0.5
nextcloud:nextcloud_server	nextcloud nextcloud server	lt	20.0.2

CNA Affected

[
  {
    "product": "Nextcloud Server",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed in 20.0.2, 19.0.5, 18.0.11"
      }
    ]
  }
]