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CVE-2009-0758

Estado: ModificadaAlta (7.8)—

The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm.

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-daemon

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2009-0758",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 6.9,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-03-03T16:30:05.313",
  "references": [
    {
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=517683",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00000.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/38420",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.debian.org/security/2010/dsa-2086",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:076",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/03/02/1",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/33946",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=517683",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00000.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/38420",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.debian.org/security/2010/dsa-2086",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2009:076",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2009/03/02/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/33946",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm."
    },
    {
      "lang": "es",
      "value": "La función originates_from_local_legacy_unicast_socket en avahi-core/server.c en avahi-daemon v0.6.23 no tiene en cuenta la orden del byte de red de un numero de puerto cuando se esta procesando la llegada de paquetes multidifusión, lo que permite a atacantes remotos producir una denegación de servicio (agotamiento de ancho de banda y CPU) a través de un paquete de petición legada monodifusión mDNS que dispara una tormenta de paquetes multidifusión."
    }
  ],
  "lastModified": "2026-06-16T23:05:44.850",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:avahi:avahi-daemon:0.6.23:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5282283-E0A7-4D0C-A951-9D8F39E374FA"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "This issue has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2010-0528.html.",
      "lastModified": "2010-07-13T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}