Vulnerability-Lookup

CNVD-2022-87596

Vulnerability from cnvd - Published: 2022-12-14

Title

Buffalo信任管理问题漏洞

Description

Buffalo固件是日本巴比禄（Buffalo）公司的一个网络设备。 Buffalo Wi-Fi devices存在信任管理问题漏洞，该漏洞源于使用硬编码的凭证，邻近网络的攻击者可利用漏洞修改设备的配置。

Severity

中

Patch Name

Buffalo信任管理问题漏洞的补丁

Patch Description

Buffalo固件是日本巴比禄（Buffalo）公司的一个网络设备。 Buffalo Wi-Fi devices存在信任管理问题漏洞，该漏洞源于使用硬编码的凭证，邻近网络的攻击者可利用漏洞修改设备的配置。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.buffalo.jp/news/detail/20221003-01.html

Reference

https://jvndb.jvn.jp/en/contents/2022/JVNDB-2022-002444.html

Impacted products

Name
['BUFFALO WZR-300HP firmware <=2.00', 'BUFFALO WZR-450HP firmware <=2.00', 'BUFFALO WZR-600DHP firmware <=2.00', 'BUFFALO wzr-900dhp_firmware <=1.15', 'BUFFALO HW-450HP-ZWE firmware <=2.00', 'BUFFALO WZR-450HP-CWT firmware <=2.00', 'BUFFALO WZR-450HP-UB firmware <=2.00', 'BUFFALO wzr-600dhp2_firmware <=1.15', 'BUFFALO WZR-D1100H firmware <=2.00']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-34840",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-34840"
    }
  },
  "description": "Buffalo\u56fa\u4ef6\u662f\u65e5\u672c\u5df4\u6bd4\u7984\uff08Buffalo\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u7f51\u7edc\u8bbe\u5907\u3002\n\nBuffalo Wi-Fi devices\u5b58\u5728\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4f7f\u7528\u786c\u7f16\u7801\u7684\u51ed\u8bc1\uff0c\u90bb\u8fd1\u7f51\u7edc\u7684\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u4fee\u6539\u8bbe\u5907\u7684\u914d\u7f6e\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://www.buffalo.jp/news/detail/20221003-01.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-87596",
  "openTime": "2022-12-14",
  "patchDescription": "Buffalo\u56fa\u4ef6\u662f\u65e5\u672c\u5df4\u6bd4\u7984\uff08Buffalo\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u7f51\u7edc\u8bbe\u5907\u3002\r\n\r\nBuffalo Wi-Fi devices\u5b58\u5728\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4f7f\u7528\u786c\u7f16\u7801\u7684\u51ed\u8bc1\uff0c\u90bb\u8fd1\u7f51\u7edc\u7684\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u4fee\u6539\u8bbe\u5907\u7684\u914d\u7f6e\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": "Buffalo\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "BUFFALO WZR-300HP firmware \u003c=2.00",
      "BUFFALO WZR-450HP firmware \u003c=2.00",
      "BUFFALO WZR-600DHP firmware \u003c=2.00",
      "BUFFALO wzr-900dhp_firmware \u003c=1.15",
      "BUFFALO HW-450HP-ZWE firmware \u003c=2.00",
      "BUFFALO WZR-450HP-CWT firmware \u003c=2.00",
      "BUFFALO WZR-450HP-UB firmware \u003c=2.00",
      "BUFFALO wzr-600dhp2_firmware \u003c=1.15",
      "BUFFALO WZR-D1100H firmware \u003c=2.00"
    ]
  },
  "referenceLink": "https://jvndb.jvn.jp/en/contents/2022/JVNDB-2022-002444.html",
  "serverity": "\u4e2d",
  "submitTime": "2022-10-11",
  "title": "Buffalo\u4fe1\u4efb\u7ba1\u7406\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2022-34840 (GCVE-0-2022-34840)

Vulnerability from cvelistv5 – Published: 2022-12-07 00:00 – Updated: 2025-04-23 16:10

Summary

Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 16:09 UTC

CWE

Use of hard-coded credentials
CWE-798 - Use of Hard-coded Credentials

Assigner

jpcert jpcert root

References

2 references

URL	Tags
https://www.buffalo.jp/news/detail/20221003-01.html
https://jvn.jp/en/vu/JVNVU92805279/index.html

Impacted products

1 product

Vendor	Product	Version
BUFFALO INC.	Buffalo network devices	Affected: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T09:22:10.744Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.buffalo.jp/news/detail/20221003-01.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/vu/JVNVU92805279/index.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-34840",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T16:09:25.218732Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-798",
                "description": "CWE-798 Use of Hard-coded Credentials",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T16:10:12.366Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Buffalo network devices",
          "vendor": "BUFFALO INC.",
          "versions": [
            {
              "status": "affected",
              "version": "WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier."
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Use of hard-coded credentials vulnerability in multiple Buffalo network devices allows a network-adjacent attacker to alter?configuration settings of the device. The affected products/versions are as follows: WZR-300HP firmware Ver. 2.00 and earlier, WZR-450HP firmware Ver. 2.00 and earlier, WZR-600DHP firmware Ver. 2.00 and earlier, WZR-900DHP firmware Ver. 1.15 and earlier, HW-450HP-ZWE firmware Ver. 2.00 and earlier, WZR-450HP-CWT firmware Ver. 2.00 and earlier, WZR-450HP-UB firmware Ver. 2.00 and earlier, WZR-600DHP2 firmware Ver. 1.15 and earlier, and WZR-D1100H firmware Ver. 2.00 and earlier."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Use of hard-coded credentials",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-07T00:00:00.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://www.buffalo.jp/news/detail/20221003-01.html"
        },
        {
          "url": "https://jvn.jp/en/vu/JVNVU92805279/index.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2022-34840",
    "datePublished": "2022-12-07T00:00:00.000Z",
    "dateReserved": "2022-09-27T00:00:00.000Z",
    "dateUpdated": "2025-04-23T16:10:12.366Z",
    "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.
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CNVD-2022-87596

CVE-2022-34840 (GCVE-0-2022-34840)

Tags

Sightings

Nomenclature

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