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CVE-2022-42321

Estado: ModificadaMedia (6.5)—

Xenstore: los invitados pueden bloquear xenstored al agotar la pila. Xenstored utiliza la recursividad para algunas operaciones de Xenstore (por ejemplo, para eliminar un subárbol de nodos de Xenstore). Con niveles de anidamiento suficientemente profundos, esto puede provocar el agotamiento de la pila en xenstored, lo que provocará un fallo de xenstored.

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)

Debian — Debian LinuxFedoraproject — FedoraXEN — XEN

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-42321",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 2
      }
    ]
  },
  "affected": [
    {
      "source": "security@xen.org",
      "affectedData": [
        {
          "vendor": "Xen",
          "product": "xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-418"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-11-01T13:15:11.870",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2022/11/01/8",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "security@xen.org"
    },
    {
      "url": "http://xenbits.xen.org/xsa/advisory-418.html",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@xen.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/",
      "source": "security@xen.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/",
      "source": "security@xen.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/",
      "source": "security@xen.org"
    },
    {
      "url": "https://security.gentoo.org/glsa/202402-07",
      "source": "security@xen.org"
    },
    {
      "url": "https://www.debian.org/security/2022/dsa-5272",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "security@xen.org"
    },
    {
      "url": "https://xenbits.xenproject.org/xsa/advisory-418.txt",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@xen.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2022/11/01/8",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/202402-07",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.debian.org/security/2022/dsa-5272",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://xenbits.xenproject.org/xsa/advisory-418.txt",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Xenstore: Guests can crash xenstored via exhausting the stack Xenstored is using recursion for some Xenstore operations (e.g. for deleting a sub-tree of Xenstore nodes). With sufficiently deep nesting levels this can result in stack exhaustion on xenstored, leading to a crash of xenstored."
    },
    {
      "lang": "es",
      "value": "Xenstore: los invitados pueden bloquear xenstored al agotar la pila. Xenstored utiliza la recursividad para algunas operaciones de Xenstore (por ejemplo, para eliminar un subárbol de nodos de Xenstore). Con niveles de anidamiento suficientemente profundos, esto puede provocar el agotamiento de la pila en xenstored, lo que provocará un fallo de xenstored."
    }
  ],
  "lastModified": "2026-06-17T05:04:43.263",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BFA1950D-1D9F-4401-AA86-CF3028EFD286"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
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  "sourceIdentifier": "security@xen.org"
}