« Volver al listado

CVE-2021-20041

Estado: ModificadaAlta (7.5)—

An unauthenticated and remote adversary can consume all of the device's CPU due to crafted HTTP requests sent to SMA100 /fileshare/sonicfiles/sonicfiles resulting in a loop with unreachable exit condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (5)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-20041",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "PSIRT@sonicwall.com",
      "affectedData": [
        {
          "vendor": "SonicWall",
          "product": "SonicWall SMA100",
          "versions": [
            {
              "status": "affected",
              "version": "9.0.0.11-31sv and earlier"
            },
            {
              "status": "affected",
              "version": "10.2.0.8-37sv and earlier"
            },
            {
              "status": "affected",
              "version": "10.2.1.1-19sv and earlier"
            },
            {
              "status": "affected",
              "version": "10.2.1.2-24sv and earlier"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-08T10:15:08.003",
  "references": [
    {
      "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "PSIRT@sonicwall.com"
    },
    {
      "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "PSIRT@sonicwall.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An unauthenticated and remote adversary can consume all of the device's CPU due to crafted HTTP requests sent to SMA100 /fileshare/sonicfiles/sonicfiles resulting in a loop with unreachable exit condition. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances."
    },
    {
      "lang": "es",
      "value": "Un adversario no autenticado y remoto puede consumir toda la CPU del dispositivo debido a peticiones HTTP diseñadas enviadas a SMA100 /fileshare/sonicfiles/sonicfiles, lo que provoca un bucle con condición de salida inalcanzable. Esta vulnerabilidad afecta a los dispositivos SMA 200, 210, 400, 410 y 500v"
    }
  ],
  "lastModified": "2026-06-17T03:33:11.780",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_200_firmware:9.0.0.11-31sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4D9E19F4-7FF4-426C-8B08-BCC802F653E0"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4185C028-6A07-4A92-8380-9AA3953D2CFD"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "33233A45-6667-4CE9-A21C-6A6C725689F8"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "0B190266-AD6F-401B-9B2E-061CDD539236"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_210_firmware:9.0.0.11-31sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C14BCE5E-887B-41D4-9845-34E3A7CCDE58"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E62EEC93-6F52-4DDB-95F0-D5736391D64C"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E4F1C135-A182-4233-B7FC-D08C754ECE13"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "51587338-4A5F-41FC-9497-743F061947C2"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_410_firmware:9.0.0.11-31sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9464A061-4218-472A-B981-8E6A653C5D53"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "53698BD3-43B6-4EC4-8847-E6ED9A3CB6F6"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8EC74D70-C04B-481F-A706-6C86751996FB"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "9DFB8FBC-FFA4-4526-B306-D5692A43DC9E"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_400_firmware:9.0.0.11-31sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C842AFF6-C556-4187-957B-548E5649D949"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9BE21589-3BEC-4245-9939-CF50DE70B12A"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BEB82F42-A5DF-42CC-86F9-B06B39BBC202"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "9D728332-10C9-4508-B720-569D44E99543"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_500v_firmware:9.0.0.11-31sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0E00827E-3007-4EA4-B22A-3BDFC246EA65"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "379F7CA2-8914-4710-AE6B-D2833605D4B8"
            },
            {
              "criteria": "cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AC429F62-366B-4B68-B378-FB741F9F7FEF"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "A6AD8A33-7CE4-4C66-9E23-F0C9C9638770"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "PSIRT@sonicwall.com"
}