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CVE-2020-12803

Estado: ModificadaMedia (6.5)—

ODF documents can contain forms to be filled out by the user. Similar to HTML forms, the contained form data can be submitted to a URI, for example, to an external web server. To create submittable forms, ODF implements the XForms W3C standard, which allows data to be submitted without the need for macros or other active scripting Prior to version 6.4.4 LibreOffice allowed forms to be submitted to any URI, including file: URIs, enabling form submissions to overwrite local files.

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User-interaction is required to submit the form, but to avoid the possibility of malicious documents engineered to maximize the possibility of inadvertent user submission this feature has now been limited to http[s] URIs, removing the possibility to overwrite local files. This issue affects: The Document Foundation LibreOffice versions prior to 6.4.4.

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 (3)

Fedoraproject — FedoraLibreoffice — LibreofficeOpensuse — Leap

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-12803",
  "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:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@documentfoundation.org",
      "affectedData": [
        {
          "vendor": "The Document Foundation",
          "product": "LibreOffice",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "6.4.4",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-06-08T16:15:10.057",
  "references": [
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00042.html",
      "tags": [
        "Broken Link"
      ],
      "source": "security@documentfoundation.org"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00058.html",
      "tags": [
        "Broken Link"
      ],
      "source": "security@documentfoundation.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00026.html",
      "source": "security@documentfoundation.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PQIBAKXD7VO5IGBD7ZMH3GGBNR5R2IOA/",
      "source": "security@documentfoundation.org"
    },
    {
      "url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2020-12803",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@documentfoundation.org"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00042.html",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00058.html",
      "tags": [
        "Broken Link"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00026.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PQIBAKXD7VO5IGBD7ZMH3GGBNR5R2IOA/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.libreoffice.org/about-us/security/advisories/CVE-2020-12803",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ODF documents can contain forms to be filled out by the user. Similar to HTML forms, the contained form data can be submitted to a URI, for example, to an external web server. To create submittable forms, ODF implements the XForms W3C standard, which allows data to be submitted without the need for macros or other active scripting Prior to version 6.4.4 LibreOffice allowed forms to be submitted to any URI, including file: URIs, enabling form submissions to overwrite local files. User-interaction is required to submit the form, but to avoid the possibility of malicious documents engineered to maximize the possibility of inadvertent user submission this feature has now been limited to http[s] URIs, removing the possibility to overwrite local files. This issue affects: The Document Foundation LibreOffice versions prior to 6.4.4."
    },
    {
      "lang": "es",
      "value": "Los documentos ODF pueden contener formularios para ser completados por parte del usuario. De manera similar a los formularios HTML, los datos del formulario contenido pueden ser enviados hacia un URI, por ejemplo, hacia un servidor web externo. Para crear formularios enviables, ODF implementa el estándar XForms W3C, que permite el envío de datos sin la necesidad de macros u otro scripting activo. LibreOffice versiones anteriores a 6.4.4 permitió que formularios sean enviados hacia cualquier URI, incluyendo los URI file:, permitiendo envíos de formularios para sobrescribir archivos locales. Una interacción del usuario es requerida para enviar el formulario, pero para evitar la posibilidad de documentos maliciosos diseñados para maximizar la posibilidad de envío involuntario del usuario, esta característica ahora se ha limitado a los URI http[s], eliminando la posibilidad de sobrescribir archivos locales. Este problema afecta: Document Foundation LibreOffice versiones anteriores a 6.4.4"
    }
  ],
  "lastModified": "2026-06-17T02:52:19.737",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "884EC10F-81A5-439D-8575-019B8EF77C04",
              "versionEndExcluding": "6.4.4"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*",
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              "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33"
            }
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  "sourceIdentifier": "security@documentfoundation.org"
}