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CVE-2021-3063

Estado: ModificadaAlta (7.5)—

An improper handling of exceptional conditions vulnerability exists in Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to send specifically crafted traffic to a GlobalProtect interface that causes the service to stop responding. 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 8.1.21; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h4; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8-h4; PAN-OS 10.1 versions earlier than PAN-OS 10.1.3. Prisma Access customers are not impacted by this issue.

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-2021-3063",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "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": "affected",
              "changes": [
                {
                  "at": "8.1.21",
                  "status": "unaffected"
                }
              ],
              "version": "8.1",
              "lessThan": "8.1.21",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "9.0.14-h4",
                  "status": "unaffected"
                }
              ],
              "version": "9.0",
              "lessThan": "9.0.14-h4",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "10.0.8-h4",
                  "status": "unaffected"
                }
              ],
              "version": "10.0",
              "lessThan": "10.0.8-h4",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "10.1.3",
                  "status": "unaffected"
                }
              ],
              "version": "10.1",
              "lessThan": "10.1.3",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "9.1.11-h3",
                  "status": "unaffected"
                }
              ],
              "version": "9.1",
              "lessThan": "9.1.11-h3",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Palo Alto Networks",
          "product": "Prisma Access",
          "versions": [
            {
              "status": "unaffected",
              "version": "2.2 all"
            },
            {
              "status": "unaffected",
              "version": "2.1 all"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-11-10T17:15:10.507",
  "references": [
    {
      "url": "https://security.paloaltonetworks.com/CVE-2021-3063",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@paloaltonetworks.com"
    },
    {
      "url": "https://security.paloaltonetworks.com/CVE-2021-3063",
      "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 Palo Alto Networks GlobalProtect portal and gateway interfaces that enables an unauthenticated network-based attacker to send specifically crafted traffic to a GlobalProtect interface that causes the service to stop responding. 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 8.1.21; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14-h4; PAN-OS 9.1 versions earlier than PAN-OS 9.1.11-h3; PAN-OS 10.0 versions earlier than PAN-OS 10.0.8-h4; PAN-OS 10.1 versions earlier than PAN-OS 10.1.3. Prisma Access customers are not impacted by this issue."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de administración inapropiada de condiciones excepcionales en las interfaces de portal y puerta de enlace de Palo Alto Networks GlobalProtect que permite a un atacante no autenticado basado en la red enviar tráfico específicamente diseñado a una interfaz de GlobalProtect que cause que el servicio deje de responder. Los intentos repetidos de enviar esta petición resulta en una denegación de servicio a todos los servicios de PAN-OS, reiniciando el dispositivo y poniéndolo en modo de mantenimiento. Este problema afecta a: PAN-OS versiones 8.1 anteriores a PAN-OS 8.1.21; PAN-OS versiones 9.0 anteriores a PAN-OS 9.0.14-h4; PAN-OS versiones 9.1 anteriores a PAN-OS 9.1.11-h3; PAN-OS versiones 10.0 anteriores a PAN-OS 10.0.8-h4; PAN-OS versiones 10.1 anteriores a PAN-OS 10.1.3. Los clientes de Prisma Access no están afectados por este problema"
    }
  ],
  "lastModified": "2026-06-17T04:04:40.257",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "859B40E3-713E-4FB5-ACB1-0138D937E1B6",
              "versionEndExcluding": "8.1.21",
              "versionStartIncluding": "8.1.0"
            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9E95975B-A993-48FE-BA16-C89BEB075CBE",
              "versionEndIncluding": "9.0.14",
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            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7C95A07E-5F94-4907-A283-954B7924DA3A",
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            },
            {
              "criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*",
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            },
            {
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              "matchCriteriaId": "40AFDDF3-0AB4-4A18-93E9-01EE5BDE9D2E",
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            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@paloaltonetworks.com"
}