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CVE-2025-68468

Estado: AnalizadaMedia (6.5)—

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, avahi-daemon can be crashed by sending unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes.

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-2025-68468",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68468",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-12T18:41:41.101488Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "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:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "avahi",
          "product": "avahi",
          "versions": [
            {
              "status": "affected",
              "version": "<= 0.9-rc2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-12T18:15:48.173",
  "references": [
    {
      "url": "https://github.com/avahi/avahi/commit/f66be13d7f31a3ef806d226bf8b67240179d309a",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/avahi/avahi/issues/683",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/avahi/avahi/security/advisories/GHSA-cp79-r4x9-vf52",
      "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, avahi-daemon can be crashed by sending unsolicited announcements containing CNAME resource records pointing it to resource records with short TTLs. As soon as they expire avahi-daemon crashes."
    },
    {
      "lang": "es",
      "value": "Avahi es un sistema que facilita el descubrimiento de servicios en una red local a través del conjunto de protocolos mDNS/DNS-SD. En 0.9-rc2 y versiones anteriores, avahi-daemon puede ser colapsado enviando anuncios no solicitados que contienen registros de recursos CNAME que lo apuntan a registros de recursos con TTL cortos. Tan pronto como expiran, avahi-daemon colapsa."
    }
  ],
  "lastModified": "2026-06-17T09:59:06.760",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*",
              "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"
}