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[email protected]CVE-2021-32678

HistoryJul 12, 2021 - 1:15 p.m.

CVE-2021-32678

2021-07-1213:15:07

CWE-307

CWE-799

[email protected]

web.nvd.nist.gov

120

nextcloud

server

ocs api

ratelimits

authentication

bypass

spamming

vulnerability

patch

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

6.5 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

55.0%

JSON

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.13, 20.0.11, and 21.0.3, ratelimits are not applied to OCS API responses. This affects any OCS API controller (OCSController) using the @BruteForceProtection annotation. Risk depends on the installed applications on the Nextcloud Server, but could range from bypassing authentication ratelimits or spamming other Nextcloud users. The vulnerability is patched in versions 19.0.13, 20.0.11, and 21.0.3. No workarounds aside from upgrading are known to exist.

Affected configurations

Vulners

NVD

Node

nextcloudnextcloudRange<19.0.13

nextcloudnextcloudRange20.0.0–20.0.11

nextcloudnextcloudRange21.0.0–21.0.3

VendorProductVersionCPE
nextcloudnextcloud*cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*
nextcloudnextcloud*cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*
nextcloudnextcloud*cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:*

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

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 19.0.13"
      },
      {
        "status": "affected",
        "version": ">= 20.0.0, < 20.0.11"
      },
      {
        "status": "affected",
        "version": ">= 21.0.0, < 21.0.3"
      }
    ]
  }
]