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CVE-2020-19201

Estado: ModificadaMedia (5.4)—

A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules.

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)

Netgate — Pfsense

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-19201",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-07-12T16:15:08.367",
  "references": [
    {
      "url": "https://docs.netgate.com/pfsense/en/latest/releases/2-4-4-p3.html",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://gist.github.com/dharmeshbaskaran/fd3779006361d07651a883e8a040d916",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.pfsense.org/download/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://docs.netgate.com/pfsense/en/latest/releases/2-4-4-p3.html",
      "tags": [
        "Product",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://gist.github.com/dharmeshbaskaran/fd3779006361d07651a883e8a040d916",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.pfsense.org/download/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A Stored Cross-Site Scripting (XSS) vulnerability was found in status_filter_reload.php, a page in the pfSense software WebGUI, on Netgate pfSense version 2.4.4-p2 and earlier. The page did not encode output from the filter reload process, and a stored XSS was possible via the descr (description) parameter on NAT rules."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad de Cross-Site Scripting (XSS) almacenada en status_filter_reload.php, una página de la WebGUI del software pfSense, en la versión 2.4.4-p2 de Netgate pfSense y anteriores. La página no codificaba la salida del proceso de recarga del filtro, y era posible un XSS almacenado a través del parámetro descr (descripción) en las reglas NAT"
    }
  ],
  "lastModified": "2026-06-17T02:59:39.780",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:netgate:pfsense:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "653BCB44-6584-4779-B8AA-1A46A7E86508",
              "versionEndIncluding": "2.4.4"
            },
            {
              "criteria": "cpe:2.3:a:netgate:pfsense:2.4.4:p1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E6256A47-F8C7-4097-88D8-170E8E9AE45C"
            },
            {
              "criteria": "cpe:2.3:a:netgate:pfsense:2.4.4:p2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7F038B4C-BC0C-40A8-B547-36F0420CD800"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}