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[email protected]CVE-2021-25741

HistorySep 20, 2021 - 5:15 p.m.

CVE-2021-25741

2021-09-2017:15:08

CWE-552

CWE-20

[email protected]

web.nvd.nist.gov

272

kubernetes

security issue

cve-2021-25741

subpath volume mounts

unauthorized access

nvd

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.7 High

AI Score

Confidence

High

JSON

A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.

Affected configurations

NVD

Node

kuberneteskubernetesRange≤1.19.14

kuberneteskubernetesRange1.20.0–1.20.10

kuberneteskubernetesRange1.21.0–1.21.4

kuberneteskubernetesRange1.22.0–1.22.1

CPENameOperatorVersion
kubernetes:kuberneteskubernetesle1.19.14
kubernetes:kuberneteskubernetesle1.20.10
kubernetes:kuberneteskubernetesle1.21.4
kubernetes:kuberneteskubernetesle1.22.1

CPE	Name	Operator	Version
kubernetes:kubernetes	kubernetes	le	1.19.14
kubernetes:kubernetes	kubernetes	le	1.20.10
kubernetes:kubernetes	kubernetes	le	1.21.4
kubernetes:kubernetes	kubernetes	le	1.22.1

CNA Affected

[
  {
    "product": "Kubernetes",
    "vendor": "Kubernetes",
    "versions": [
      {
        "lessThanOrEqual": "1.19.14",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "1.20.10",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "1.21.4",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "1.22.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]