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CVE-2025-68276

Estado: AnalizadaMedia (5.5)—

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling the RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves.

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)

Avahi — Avahi

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-68276",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68276",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-12T18:41:12.045619Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "avahi",
          "product": "avahi",
          "versions": [
            {
              "status": "affected",
              "version": "<= 0.9-rc2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-12T18:15:47.560",
  "references": [
    {
      "url": "https://github.com/avahi/avahi/commit/ede7048475c5d47d53890e3bc1350dda8e0b3688",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/avahi/avahi/pull/806",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/avahi/avahi/security/advisories/GHSA-mhf3-865v-g5rc",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-617"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, an unprivileged local users can crash avahi-daemon (with wide-area disabled) by creating record browsers with the AVAHI_LOOKUP_USE_WIDE_AREA flag set via D-Bus. This can be done by either calling\nthe RecordBrowserNew method directly or creating hostname/address/service resolvers/browsers that create those browsers internally themselves."
    },
    {
      "lang": "es",
      "value": "Avahi es un sistema que facilita el descubrimiento de servicios en una red local a través de la suite de protocolos mDNS/DNS-SD. En 0.9-rc2 y versiones anteriores, un usuario local sin privilegios puede bloquear avahi-daemon (con el área extendida deshabilitada) creando navegadores de registros con la bandera AVAHI_LOOKUP_USE_WIDE_AREA establecida a través de D-Bus. Esto se puede hacer ya sea llamando directamente al método RecordBrowserNew o creando resolutores/navegadores de nombre de host/dirección/servicio que crean esos navegadores internamente por sí mismos."
    }
  ],
  "lastModified": "2026-06-17T09:58:51.220",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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              "vulnerable": true,
              "matchCriteriaId": "6481267F-934F-4A0C-9B25-59738E798458",
              "versionEndExcluding": "0.9"
            },
            {
              "criteria": "cpe:2.3:a:avahi:avahi:0.9:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "76971590-AEED-4CB1-B7B7-45EA8FD11524"
            }
          ],
          "operator": "OR"
        }
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  "sourceIdentifier": "security-advisories@github.com"
}