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CVE-2021-3053

Estado: ModificadaAlta (7.5)—

An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.5. This issue does not affect Prisma Access.

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 (1)

Paloaltonetworks — Pan-os

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-3053",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@paloaltonetworks.com",
        "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
      },
      {
        "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@paloaltonetworks.com",
      "affectedData": [
        {
          "vendor": "Palo Alto Networks",
          "product": "PAN-OS",
          "versions": [
            {
              "status": "unaffected",
              "version": "10.1.*"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "8.1.20",
                  "status": "unaffected"
                }
              ],
              "version": "8.1",
              "lessThan": "8.1.20",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "9.0.14",
                  "status": "unaffected"
                }
              ],
              "version": "9.0",
              "lessThan": "9.0.14",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "9.1.9",
                  "status": "unaffected"
                }
              ],
              "version": "9.1",
              "lessThan": "9.1.9",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "10.0.5",
                  "status": "unaffected"
                }
              ],
              "version": "10.0",
              "lessThan": "10.0.5",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-09-08T17:15:12.093",
  "references": [
    {
      "url": "https://security.paloaltonetworks.com/CVE-2021-3053",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@paloaltonetworks.com"
    },
    {
      "url": "https://security.paloaltonetworks.com/CVE-2021-3053",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@paloaltonetworks.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An improper handling of exceptional conditions vulnerability exists in the Palo Alto Networks PAN-OS dataplane that enables an unauthenticated network-based attacker to send specifically crafted traffic through the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.9; PAN-OS 10.0 versions earlier than PAN-OS 10.0.5. This issue does not affect Prisma Access."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de administración inapropiada de condiciones excepcionales en el plano de datos de PAN-OS de Palo Alto Networks que permite a un atacante no autenticado basado en la red enviar tráfico específicamente diseñado mediante el firewall que causa un bloqueo del servicio. Los intentos repetidos de enviar esta petición resultan en una denegación de servicio de todos los servicios de PAN-OS, al reiniciar el dispositivo y poniéndolo en modo de mantenimiento. Este problema afecta a: PAN-OS versión 8.1 anteriores a PAN-OS versión 8.1.20; PAN-OS versión 9.0 anteriores a PAN-OS versión 9.0.14; PAN-OS versión 9.1 anteriores a PAN-OS versión 9.1.9; PAN-OS versión 10.0 anteriores a PAN-OS versión 10.0.5. Este problema no afecta a Prisma Access"
    }
  ],
  "lastModified": "2026-06-17T04:04:38.557",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "97BB12BB-096E-4CCD-B5F4-55900801DF74",
              "versionEndExcluding": "8.1.20",
              "versionStartIncluding": "8.1.0"
            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E9EE274A-3AF1-4204-B43D-1EA54C6442CC",
              "versionEndExcluding": "9.0.14",
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            {
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              "vulnerable": true,
              "matchCriteriaId": "5075D342-EE42-4659-BD55-2D9FE7496C34",
              "versionEndExcluding": "9.1.9",
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            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2E92DFB1-AD67-4FF8-9722-200630EA490A",
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          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "psirt@paloaltonetworks.com"
}