Vulnerability-Lookup

CNVD-2022-10723

Vulnerability from cnvd - Published: 2022-02-16

Title

kubernetes输入验证错误漏洞

Description

Kubernetes是美国Linux基金会的一套开源的Docker容器集群管理系统。该系统为容器化的应用提供资源调度、部署运行、服务发现和扩容缩容等功能。 kubernetes存在安全漏洞，攻击者可利用该漏洞通过创建具有精心编制的子路径卷装载的pod，以访问卷外的文件和目录，包括主机节点的文件系统上的文件和目录。

Severity

中

Patch Name

kubernetes输入验证错误漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://access.redhat.com/security/cve/cve-2021-25741

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-25741

Impacted products

Name
['Kubernetes Kubernetes <=1.19.14', 'Kubernetes Kubernetes >=1.20.0，<=1.20.10', 'Kubernetes Kubernetes >=1.21.0，<=1.21.4', 'Kubernetes Kubernetes >=1.22.0，<=1.22.1']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-25741"
    }
  },
  "description": "Kubernetes\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u5f00\u6e90\u7684Docker\u5bb9\u5668\u96c6\u7fa4\u7ba1\u7406\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u4e3a\u5bb9\u5668\u5316\u7684\u5e94\u7528\u63d0\u4f9b\u8d44\u6e90\u8c03\u5ea6\u3001\u90e8\u7f72\u8fd0\u884c\u3001\u670d\u52a1\u53d1\u73b0\u548c\u6269\u5bb9\u7f29\u5bb9\u7b49\u529f\u80fd\u3002\n\nkubernetes\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u521b\u5efa\u5177\u6709\u7cbe\u5fc3\u7f16\u5236\u7684\u5b50\u8def\u5f84\u5377\u88c5\u8f7d\u7684pod\uff0c\u4ee5\u8bbf\u95ee\u5377\u5916\u7684\u6587\u4ef6\u548c\u76ee\u5f55\uff0c\u5305\u62ec\u4e3b\u673a\u8282\u70b9\u7684\u6587\u4ef6\u7cfb\u7edf\u4e0a\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://access.redhat.com/security/cve/cve-2021-25741",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-10723",
  "openTime": "2022-02-16",
  "patchDescription": "Kubernetes\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u5f00\u6e90\u7684Docker\u5bb9\u5668\u96c6\u7fa4\u7ba1\u7406\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u4e3a\u5bb9\u5668\u5316\u7684\u5e94\u7528\u63d0\u4f9b\u8d44\u6e90\u8c03\u5ea6\u3001\u90e8\u7f72\u8fd0\u884c\u3001\u670d\u52a1\u53d1\u73b0\u548c\u6269\u5bb9\u7f29\u5bb9\u7b49\u529f\u80fd\u3002\r\n\r\nkubernetes\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u521b\u5efa\u5177\u6709\u7cbe\u5fc3\u7f16\u5236\u7684\u5b50\u8def\u5f84\u5377\u88c5\u8f7d\u7684pod\uff0c\u4ee5\u8bbf\u95ee\u5377\u5916\u7684\u6587\u4ef6\u548c\u76ee\u5f55\uff0c\u5305\u62ec\u4e3b\u673a\u8282\u70b9\u7684\u6587\u4ef6\u7cfb\u7edf\u4e0a\u7684\u6587\u4ef6\u548c\u76ee\u5f55\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "kubernetes\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Kubernetes Kubernetes \u003c=1.19.14",
      "Kubernetes Kubernetes \u003e=1.20.0\uff0c\u003c=1.20.10",
      "Kubernetes Kubernetes \u003e=1.21.0\uff0c\u003c=1.21.4",
      "Kubernetes Kubernetes \u003e=1.22.0\uff0c\u003c=1.22.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-25741",
  "serverity": "\u4e2d",
  "submitTime": "2021-09-17",
  "title": "kubernetes\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-25741 (GCVE-0-2021-25741)

Vulnerability from cvelistv5 – Published: 2021-09-20 17:05 – Updated: 2024-09-16 23:26

Title

Symlink Exchange Can Allow Host Filesystem Access

Summary

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.

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-20 13:25 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

kubernetes mitre root

References

3 references

URL	Tags
https://groups.google.com/g/kubernetes-security-a…	x_refsource_MISC
https://github.com/kubernetes/kubernetes/issues/104980	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021100…	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
Kubernetes	Kubernetes	Affected: unspecified , ≤ 1.19.14 (custom) Affected: unspecified , ≤ 1.20.10 (custom) Affected: unspecified , ≤ 1.21.4 (custom) Affected: unspecified , ≤ 1.22.1 (custom)
kubernetes	kubernetes	Affected: 0 , ≤ 1.19.14 (custom) Affected: 1.20.0 , ≤ 1.20.10 (custom) Affected: 1.21.0 , ≤ 1.21.4 (custom) Affected: 1.22.0 , ≤ 1.22.1 (custom) cpe:2.3:a:kubernetes:kubernetes::::::::

Credits

Fabricio Voznika & Mark Wolters

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:11:27.655Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/kubernetes/kubernetes/issues/104980"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "kubernetes",
            "vendor": "kubernetes",
            "versions": [
              {
                "lessThanOrEqual": "1.19.14",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "1.20.10",
                "status": "affected",
                "version": "1.20.0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "1.21.4",
                "status": "affected",
                "version": "1.21.0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "1.22.1",
                "status": "affected",
                "version": "1.22.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-25741",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-20T13:25:58.469004Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-20T13:37:41.191Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Fabricio Voznika \u0026 Mark Wolters"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-08T14:06:36.000Z",
        "orgId": "a6081bf6-c852-4425-ad4f-a67919267565",
        "shortName": "kubernetes"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubernetes/kubernetes/issues/104980"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
        }
      ],
      "source": {
        "defect": [
          "https://github.com/kubernetes/kubernetes/issues/104980"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Symlink Exchange Can Allow Host Filesystem Access",
      "x_ConverterErrors": {
        "DATE_PUBLIC": {
          "error": "v4 DATE_PUBLIC is invalid",
          "message": "hour must be in 0..23"
        }
      },
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@kubernetes.io",
          "DATE_PUBLIC": "2021-09-15T121:15:00.000Z",
          "ID": "CVE-2021-25741",
          "STATE": "PUBLIC",
          "TITLE": "Symlink Exchange Can Allow Host Filesystem Access"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Kubernetes",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.19.14"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.20.10"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.21.4"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.22.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Kubernetes"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Fabricio Voznika \u0026 Mark Wolters"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20: Improper Input Validation"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s",
              "refsource": "MISC",
              "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
            },
            {
              "name": "https://github.com/kubernetes/kubernetes/issues/104980",
              "refsource": "MISC",
              "url": "https://github.com/kubernetes/kubernetes/issues/104980"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20211008-0006/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
            }
          ]
        },
        "source": {
          "defect": [
            "https://github.com/kubernetes/kubernetes/issues/104980"
          ],
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565",
    "assignerShortName": "kubernetes",
    "cveId": "CVE-2021-25741",
    "datePublished": "2021-09-20T17:05:21.097Z",
    "dateReserved": "2021-01-21T00:00:00.000Z",
    "dateUpdated": "2024-09-16T23:26:06.351Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2022-10723

CVE-2021-25741 (GCVE-0-2021-25741)

Tags

Sightings

Nomenclature

Related by attack behaviour