Vulnerability-Lookup

CNVD-2021-95485

Vulnerability from cnvd - Published: 2021-12-09

Title

elecom lan routers访问控制错误漏洞

Description

elecom lan routers是日本Elecom的一款路由器。 elecom lan routers存在访问控制错误漏洞，攻击者可利用该漏洞绕过访问限制并通过未指定的向量访问产品的管理屏幕。

Severity

中

Patch Name

elecom lan routers访问控制错误漏洞的补丁

Patch Description

elecom lan routers是日本Elecom的一款路由器。 elecom lan routers存在访问控制错误漏洞，攻击者可利用该漏洞绕过访问限制并通过未指定的向量访问产品的管理屏幕。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： http://www.elecom.co.jp/news/security/20211130-01/

Reference

https://www.cybersecurity-help.cz/vdb/SB2021113005

Impacted products

Name
['Elecom lan routers <=WRC-1167GST2 firmware v1.25', 'Elecom lan routers <=WRC-1167GST2A firmware v1.25', 'Elecom lan routers <=WRC-1167GST2H firmware v1.25', 'Elecom lan routers <=WRC-2533GS2-B firmware v1.52', 'Elecom lan routers <=WRC-2533GS2-W firmware v1.52', 'Elecom lan routers <=WRC-1750GS firmware v1.03', 'Elecom lan routers <=WRC-1750GSV firmware v2.11', 'Elecom lan routers <=WRC-1900GST firmware v1.03', 'Elecom lan routers <=WRC-2533GST firmware v1.03', 'Elecom lan routers <=WRC-2533GSTA firmware v1.03', 'Elecom lan routers <=WRC-2533GST2 firmware v1.25', 'Elecom lan routers <=WRC-2533GST2SP firmware v1.25', 'Elecom lan routers <=WRC-2533GST2-G firmware v1.25', 'Elecom lan routers <=EDWRC-2533GST2 firmware v1.25']

Name

['Elecom lan routers <=WRC-1167GST2 firmware v1.25', 'Elecom lan routers <=WRC-1167GST2A firmware v1.25', 'Elecom lan routers <=WRC-1167GST2H firmware v1.25', 'Elecom lan routers <=WRC-2533GS2-B firmware v1.52', 'Elecom lan routers <=WRC-2533GS2-W firmware v1.52', 'Elecom lan routers <=WRC-1750GS firmware v1.03', 'Elecom lan routers <=WRC-1750GSV firmware v2.11', 'Elecom lan routers <=WRC-1900GST firmware v1.03', 'Elecom lan routers <=WRC-2533GST firmware v1.03', 'Elecom lan routers <=WRC-2533GSTA firmware v1.03', 'Elecom lan routers <=WRC-2533GST2 firmware v1.25', 'Elecom lan routers <=WRC-2533GST2SP firmware v1.25', 'Elecom lan routers <=WRC-2533GST2-G firmware v1.25', 'Elecom lan routers <=EDWRC-2533GST2 firmware v1.25']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-20861",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-20861"
    }
  },
  "description": "elecom lan routers\u662f\u65e5\u672cElecom\u7684\u4e00\u6b3e\u8def\u7531\u5668\u3002\n\nelecom lan routers\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u8bbf\u95ee\u9650\u5236\u5e76\u901a\u8fc7\u672a\u6307\u5b9a\u7684\u5411\u91cf\u8bbf\u95ee\u4ea7\u54c1\u7684\u7ba1\u7406\u5c4f\u5e55\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttp://www.elecom.co.jp/news/security/20211130-01/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-95485",
  "openTime": "2021-12-09",
  "patchDescription": "elecom lan routers\u662f\u65e5\u672cElecom\u7684\u4e00\u6b3e\u8def\u7531\u5668\u3002\r\n\r\nelecom lan routers\u5b58\u5728\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u8bbf\u95ee\u9650\u5236\u5e76\u901a\u8fc7\u672a\u6307\u5b9a\u7684\u5411\u91cf\u8bbf\u95ee\u4ea7\u54c1\u7684\u7ba1\u7406\u5c4f\u5e55\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": "elecom lan routers\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Elecom lan routers \u003c=WRC-1167GST2 firmware v1.25",
      "Elecom lan routers \u003c=WRC-1167GST2A firmware v1.25",
      "Elecom lan routers \u003c=WRC-1167GST2H firmware v1.25",
      "Elecom lan routers \u003c=WRC-2533GS2-B firmware v1.52",
      "Elecom lan routers \u003c=WRC-2533GS2-W firmware v1.52",
      "Elecom lan routers \u003c=WRC-1750GS firmware v1.03",
      "Elecom lan routers \u003c=WRC-1750GSV firmware v2.11",
      "Elecom lan routers \u003c=WRC-1900GST firmware v1.03",
      "Elecom lan routers \u003c=WRC-2533GST firmware v1.03",
      "Elecom lan routers \u003c=WRC-2533GSTA firmware v1.03",
      "Elecom lan routers \u003c=WRC-2533GST2 firmware v1.25",
      "Elecom lan routers \u003c=WRC-2533GST2SP firmware v1.25",
      "Elecom lan routers \u003c=WRC-2533GST2-G firmware v1.25",
      "Elecom lan routers \u003c=EDWRC-2533GST2 firmware v1.25"
    ]
  },
  "referenceLink": "https://www.cybersecurity-help.cz/vdb/SB2021113005",
  "serverity": "\u4e2d",
  "submitTime": "2021-12-01",
  "title": "elecom lan routers\u8bbf\u95ee\u63a7\u5236\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-20861 (GCVE-0-2021-20861)

Vulnerability from cvelistv5 – Published: 2021-12-01 02:15 – Updated: 2024-08-03 17:53

Summary

Improper access control vulnerability in ELECOM LAN routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent authenticated attacker to bypass access restriction and to access the management screen of the product via unspecified vectors.

Severity

No CVSS data available.

CWE

Improper Access Control

Assigner

jpcert CNA under the jpcert root

CNA scorecard C 64/100 over 186 records in the last 180 days details

References

2 references

URL	Tags
https://www.elecom.co.jp/news/security/20211130-01/	x_refsource_MISC
https://jvn.jp/en/jp/JVN88993473/index.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
ELECOM CO.,LTD.	ELECOM LAN routers	Affected: WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:53:23.040Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.elecom.co.jp/news/security/20211130-01/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/jp/JVN88993473/index.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ELECOM LAN routers",
          "vendor": "ELECOM CO.,LTD.",
          "versions": [
            {
              "status": "affected",
              "version": "WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper access control vulnerability in ELECOM LAN routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent authenticated attacker to bypass access restriction and to access the management screen of the product via unspecified vectors."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Improper Access Control",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-12-01T02:15:55.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.elecom.co.jp/news/security/20211130-01/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jvn.jp/en/jp/JVN88993473/index.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "vultures@jpcert.or.jp",
          "ID": "CVE-2021-20861",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "ELECOM LAN routers",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "ELECOM CO.,LTD."
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Improper access control vulnerability in ELECOM LAN routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent authenticated attacker to bypass access restriction and to access the management screen of the product via unspecified vectors."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Improper Access Control"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.elecom.co.jp/news/security/20211130-01/",
              "refsource": "MISC",
              "url": "https://www.elecom.co.jp/news/security/20211130-01/"
            },
            {
              "name": "https://jvn.jp/en/jp/JVN88993473/index.html",
              "refsource": "MISC",
              "url": "https://jvn.jp/en/jp/JVN88993473/index.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2021-20861",
    "datePublished": "2021-12-01T02:15:55.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:53:23.040Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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