CVE-2021-20716 (GCVE-0-2021-20716)

Vulnerability from cvelistv5 – Published: 2021-04-28 00:45 – Updated: 2024-08-03 17:53
VLAI
Summary
Hidden functionality in multiple Buffalo network devices (BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 and prior, WLI3-TX1-G54 firmware Ver.2.53 and prior, WLI-T1-B11 firmware Ver.2.20 and prior, WLI-TX1-G54 firmware Ver.2.20 and prior, WVR-G54-NF firmware Ver.2.02 and prior, WZR-G108 firmware Ver.2.41 and prior, WZR-G54 firmware Ver.2.41 and prior, WZR-HP-G54 firmware Ver.2.41 and prior, WZR-RS-G54 firmware Ver.2.55 and prior, and WZR-RS-G54HP firmware Ver.2.55 and prior) allows a remote attacker to enable the debug option and to execute arbitrary code or OS commands, change the configuration, and cause a denial of service (DoS) condition.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • Hidden Functionality
Assigner
jpcert CNA under the jpcert root
CNA scorecard C 64/100 over 193 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
BUFFALO INC. Buffalo network devices Affected: BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 ...[truncated*]
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            "lang": "en",
            "value": "Hidden functionality in multiple Buffalo network devices (BHR-4RV firmware Ver.2.55 and prior, FS-G54 firmware Ver.2.04 and prior, WBR2-B11 firmware Ver.2.32 and prior, WBR2-G54 firmware Ver.2.32 and prior, WBR2-G54-KD firmware Ver.2.32 and prior, WBR-B11 firmware Ver.2.23 and prior, WBR-G54 firmware Ver.2.23 and prior, WBR-G54L firmware Ver.2.20 and prior, WHR2-A54G54 firmware Ver.2.25 and prior, WHR2-G54 firmware Ver.2.23 and prior, WHR2-G54V firmware Ver.2.55 and prior, WHR3-AG54 firmware Ver.2.23 and prior, WHR-G54 firmware Ver.2.16 and prior, WHR-G54-NF firmware Ver.2.10 and prior, WLA2-G54 firmware Ver.2.24 and prior, WLA2-G54C firmware Ver.2.24 and prior, WLA-B11 firmware Ver.2.20 and prior, WLA-G54 firmware Ver.2.20 and prior, WLA-G54C firmware Ver.2.20 and prior, WLAH-A54G54 firmware Ver.2.54 and prior, WLAH-AM54G54 firmware Ver.2.54 and prior, WLAH-G54 firmware Ver.2.54 and prior, WLI2-TX1-AG54 firmware Ver.2.53 and prior, WLI2-TX1-AMG54 firmware Ver.2.53 and prior, WLI2-TX1-G54 firmware Ver.2.20 and prior, WLI3-TX1-AMG54 firmware Ver.2.53 and prior, WLI3-TX1-G54 firmware Ver.2.53 and prior, WLI-T1-B11 firmware Ver.2.20 and prior, WLI-TX1-G54 firmware Ver.2.20 and prior, WVR-G54-NF firmware Ver.2.02 and prior, WZR-G108 firmware Ver.2.41 and prior, WZR-G54 firmware Ver.2.41 and prior, WZR-HP-G54 firmware Ver.2.41 and prior, WZR-RS-G54 firmware Ver.2.55 and prior, and WZR-RS-G54HP firmware Ver.2.55 and prior) allows a remote attacker to enable the debug option and to execute arbitrary code or OS commands, change the configuration, and cause a denial of service (DoS) condition."
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          {
            "lang": "es",
            "value": "Una funcionalidad Hidden en m\u00faltiples dispositivos de red de Buffalo (firmware de BHR-4RV Ver.2.55 y anteriores, firmware de FS-G54 Ver.2.04 y anteriores, firmware de WBR2-B11 Ver.2.32 y anteriores, firmware de WBR2-G54 Ver.2 .32 y anteriores, firmware de WBR2-G54-KD Ver.2.32 y anteriores, firmware de WBR-B11 Ver.2.23 y anteriores, firmware de WBR-G54 Ver.2.23 y anteriores, firmware de WBR-G54L Ver.2.20 y anteriores, firmware de WHR2-A54G54 Ver.2 .25 y anteriores, firmware de WHR2-G54 Ver.2.23 y anteriores, firmware de WHR2-G54V Ver.2.55 y anteriores, firmware de WHR3-AG54 Ver.2.23 y anteriores, firmware de WHR-G54 Ver.2.16 y anteriores, firmware de WHR-G54-NF Ver.2 .10 y anteriores, firmware de WLA2-G54 Ver.2.24 y anteriores, firmware de WLA2-G54C Ver.2.24 y anteriores, firmware de WLA-B11 Ver.2.20 y anteriores, firmware de WLA-G54 Ver.2.20 y anteriores, firmware de WLA-G54C Ver.2.20 y anteriores, firmware de WLAH-A54G54 Ver.2 .54 y anteriores, firmware de WLAH-AM54G54 Ver.2.54 y anteriores, firmware de WLAH-G54 Ver.2.54 y anteriores, firmware de WLI2-TX1-AG54 Ver.2.53 y anteriores, firmware de WLI2-TX1-AMG54 Ver.2.53 y anteriores, firmware de WLI2-TX1-G54 Ver.2 .20 y anteriores, firmware de WLI3-TX1-AMG54 Ver.2.53 y anteriores, firmware de WLI3-TX1-G54 Ver.2.53 y anteriores, firmware de WLI-T1-B11 Ver.2.20 y anteriores, firmware de WLI-TX1-G54 Ver.2.20 y anteriores, firmware de WVR-G54-NF Ver.2 .02 y anteriores, firmware de WZR-G108 Ver.2.41 y anteriores, firmware de WZR-G54 Ver.2.41 y anteriores, firmware de WZR-HP-G54 Ver.2.41 y anteriores, firmware de WZR-RS-G54 Ver.2.55 y anteriores, y firmware de WZR-RS-G54HP Ver.2.55 y anteriores) permite a un atacante remoto habilitar la opci\u00f3n de depuraci\u00f3n y ejecutar c\u00f3digo arbitrario o comandos del Sistema Operativo, cambiar la configuraci\u00f3n, y causar una condici\u00f3n de denegaci\u00f3n de servicio (DoS)"
          }
        ],
        "id": "CVE-2021-20716",
        "lastModified": "2024-11-21T05:47:03.950",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 10.0,
                "confidentialityImpact": "COMPLETE",
                "integrityImpact": "COMPLETE",
                "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 10.0,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-04-28T01:15:17.107",
        "references": [
          {
            "source": "vultures@jpcert.or.jp",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://jvn.jp/en/vu/JVNVU90274525/index.html"
          },
          {
            "source": "vultures@jpcert.or.jp",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.buffalo.jp/news/detail/20210427-02.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://jvn.jp/en/vu/JVNVU90274525/index.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.buffalo.jp/news/detail/20210427-02.html"
          }
        ],
        "sourceIdentifier": "vultures@jpcert.or.jp",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-Other"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T15:00:35+00:00",
      "cve": "CVE-2021-20716",
      "id": "CVE-2021-20716",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-20716",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-20716.json",
      "version": "3"
    }
  }
}



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