CVE-2020-29481

{
  "id": "CVE-2020-29481",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
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        "obtainOtherPrivilege": false,
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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2
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  "affected": [
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      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
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  "published": "2020-12-15T18:15:15.067",
  "references": [
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      "url": "http://www.openwall.com/lists/oss-security/2020/12/16/3",
      "tags": [
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      "source": "cve@mitre.org"
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.debian.org/security/2020/dsa-4812",
      "tags": [
        "Third Party Advisory"
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://xenbits.xenproject.org/xsa/advisory-322.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
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      "source": "cve@mitre.org"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Xen through 4.14.x. Access rights of Xenstore nodes are per domid. Unfortunately, existing granted access rights are not removed when a domain is being destroyed. This means that a new domain created with the same domid will inherit the access rights to Xenstore nodes from the previous domain(s) with the same domid. Because all Xenstore entries of a guest below /local/domain/<domid> are being deleted by Xen tools when a guest is destroyed, only Xenstore entries of other guests still running are affected. For example, a newly created guest domain might be able to read sensitive information that had belonged to a previously existing guest domain. Both Xenstore implementations (C and Ocaml) are vulnerable."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Xen versiones hasta 4.14.x.&#xa0;Los derechos de acceso de los nodos de Xenstore son per domid. Desafortunadamente, los derechos de acceso concedidos existentes no son eliminados cuando un dominio ha sido destruido.&#xa0;Esto significa que un nuevo dominio creado con el mismo domid heredará los derechos de acceso a los nodos de Xenstore de los dominios anteriores con el mismo domid.&#xa0;Debido a que todas las entradas de Xenstore de un invitado por debajo /local/domain/(domid) han sido eliminadas por las herramientas Xen, cuando un invitado es destruido; solo las entradas Xenstore de otros invitados que aún se estén ejecutando están afectadas.&#xa0;Por ejemplo, un dominio invitado recién creado puede ser capaz de leer información confidencial que perteneciera a un dominio invitado previamente existente.&#xa0;Ambas implementaciones de Xenstore (C y Ocaml) son vulnerables"
    }
  ],
  "lastModified": "2026-06-17T03:11:19.963",
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