cnvd - cnvd-2021-56801

cnvd-2021-56801

Vulnerability from cnvd

Title: Buffalo WSR-2533DHPL2和WSR-2533DHP3存在路径遍历漏洞

Description:

Buffalo WSR-2533DHPL2和WSR-2533DHP3是日本Buffalo公司的路由器。

Buffalo WSR-2533DHPL2和WSR-2533DHP3存在路径遍历漏洞，该漏洞源于web界面处理目录遍历序列时出现输入验证错误，攻击者可利用该漏洞绕过身份验证。

Severity: 高

Patch Name: Buffalo WSR-2533DHPL2和WSR-2533DHP3存在路径遍历漏洞的补丁

Patch Description:

Buffalo WSR-2533DHPL2和WSR-2533DHP3是日本Buffalo公司的路由器。

Buffalo WSR-2533DHPL2和WSR-2533DHP3存在路径遍历漏洞，该漏洞源于web界面处理目录遍历序列时出现输入验证错误，攻击者可利用该漏洞绕过身份验证。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： https://www.buffalo.jp/news/detail/20210427-03.html

Reference: https://www.cybersecurity-help.cz/vdb/SB2021042705

Impacted products

Name
['BUFFALO Buffalo WSR-2533DHPL2 <=1.02', 'BUFFALO Buffalo WSR-2533DHP3 <=1.24']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-20090",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-20090"
    }
  },
  "description": "Buffalo WSR-2533DHPL2\u548cWSR-2533DHP3\u662f\u65e5\u672cBuffalo\u516c\u53f8\u7684\u8def\u7531\u5668\u3002\n\nBuffalo WSR-2533DHPL2\u548cWSR-2533DHP3\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eweb\u754c\u9762\u5904\u7406\u76ee\u5f55\u904d\u5386\u5e8f\u5217\u65f6\u51fa\u73b0\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.buffalo.jp/news/detail/20210427-03.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-56801",
  "openTime": "2021-07-30",
  "patchDescription": "Buffalo WSR-2533DHPL2\u548cWSR-2533DHP3\u662f\u65e5\u672cBuffalo\u516c\u53f8\u7684\u8def\u7531\u5668\u3002\r\n\r\nBuffalo WSR-2533DHPL2\u548cWSR-2533DHP3\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eweb\u754c\u9762\u5904\u7406\u76ee\u5f55\u904d\u5386\u5e8f\u5217\u65f6\u51fa\u73b0\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u8eab\u4efd\u9a8c\u8bc1\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 WSR-2533DHPL2\u548cWSR-2533DHP3\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "BUFFALO Buffalo WSR-2533DHPL2 \u003c=1.02",
      "BUFFALO Buffalo WSR-2533DHP3 \u003c=1.24"
    ]
  },
  "referenceLink": "https://www.cybersecurity-help.cz/vdb/SB2021042705",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-28",
  "title": "Buffalo WSR-2533DHPL2\u548cWSR-2533DHP3\u5b58\u5728\u8def\u5f84\u904d\u5386\u6f0f\u6d1e"
}

CVE-2021-20090 (GCVE-0-2021-20090)

Vulnerability from cvelistv5

Published

2021-04-29 00:00

Modified

2025-07-30 01:38

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Path Traversal

Summary

A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.

References

▼	URL	Tags
	https://www.tenable.com/security/research/tra-2021-13
	https://www.kb.cert.org/vuls/id/914124	third-party-advisory
	https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/

Impacted products

	Vendor	Product	Version
	n/a	Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3	Version: WSR-2533DHPL2 <=1.02, WSR-2533DHP3 <= 1.24

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:30:07.572Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.tenable.com/security/research/tra-2021-13"
          },
          {
            "name": "VU#914124",
            "tags": [
              "third-party-advisory",
              "x_transferred"
            ],
            "url": "https://www.kb.cert.org/vuls/id/914124"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-20090",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-06T20:25:22.891349Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20090"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-22",
                "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-30T01:38:12.051Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00+00:00",
            "value": "CVE-2021-20090 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "WSR-2533DHPL2 \u003c=1.02, WSR-2533DHP3 \u003c= 1.24"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version \u003c= 1.02 and WSR-2533DHP3 firmware version \u003c= 1.24 could allow unauthenticated remote attackers to bypass authentication."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Path Traversal",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-10-18T11:29:20.400Z",
        "orgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
        "shortName": "tenable"
      },
      "references": [
        {
          "url": "https://www.tenable.com/security/research/tra-2021-13"
        },
        {
          "name": "VU#914124",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.kb.cert.org/vuls/id/914124"
        },
        {
          "url": "https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "5ac1ecc2-367a-4d16-a0b2-35d495ddd0be",
    "assignerShortName": "tenable",
    "cveId": "CVE-2021-20090",
    "datePublished": "2021-04-29T00:00:00.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2025-07-30T01:38:12.051Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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