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FKIE_CVE-2009-3602

Vulnerability from fkie_nvd - Published: 2009-10-13 10:30 - Updated: 2026-06-16 23:11
Severity
Summary
Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses.
References
secalert@redhat.comhttp://osvdb.org/58836
secalert@redhat.comhttp://secunia.com/advisories/36996Vendor Advisory
secalert@redhat.comhttp://secunia.com/advisories/37913
secalert@redhat.comhttp://unbound.net/pipermail/unbound-users/2009-October/000852.htmlVendor Advisory
secalert@redhat.comhttp://www.debian.org/security/2009/dsa-1963
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2009/10/09/2
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2009/10/09/3
secalert@redhat.comhttp://www.vupen.com/english/advisories/2009/2875Vendor Advisory
secalert@redhat.comhttps://exchange.xforce.ibmcloud.com/vulnerabilities/53729
af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/58836
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/36996Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/37913
af854a3a-2127-422b-91ae-364da2661108http://unbound.net/pipermail/unbound-users/2009-October/000852.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2009/dsa-1963
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2009/10/09/2
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2009/10/09/3
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2009/2875Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/53729
Impacted products
Vendor Product Version
nlnetlabs unbound *
nlnetlabs unbound 0.0
nlnetlabs unbound 0.1
nlnetlabs unbound 0.2
nlnetlabs unbound 0.3
nlnetlabs unbound 0.4
nlnetlabs unbound 0.5
nlnetlabs unbound 0.6
nlnetlabs unbound 0.7
nlnetlabs unbound 0.7.1
nlnetlabs unbound 0.7.2
nlnetlabs unbound 0.8
nlnetlabs unbound 0.09
nlnetlabs unbound 0.10
nlnetlabs unbound 0.11
nlnetlabs unbound 1.0.0
nlnetlabs unbound 1.0.1
nlnetlabs unbound 1.0.2
nlnetlabs unbound 1.1.0
nlnetlabs unbound 1.1.1
nlnetlabs unbound 1.2.0
nlnetlabs unbound 1.2.1
nlnetlabs unbound 1.3.0
nlnetlabs unbound 1.3.1
nlnetlabs unbound 1.3.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
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              "versionEndIncluding": "1.3.3",
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses."
    },
    {
      "lang": "es",
      "value": "Unbound anterior v1.3.4 no comprueba las firmas para registros NSEC3, lo que permite a atacantes remotos causar una delegaci\u00f3n de seguridad para ser descargada a trav\u00e9s de suplantaci\u00f3n de DNS u otros ataques relativos al DNS conjuntamente con respuestas de delegaci\u00f3n manipuladas."
    }
  ],
  "id": "CVE-2009-3602",
  "lastModified": "2026-06-16T23:11:59.270",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2009-10-13T10:30:00.657",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "http://osvdb.org/58836"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/36996"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://secunia.com/advisories/37913"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://unbound.net/pipermail/unbound-users/2009-October/000852.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.debian.org/security/2009/dsa-1963"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.openwall.com/lists/oss-security/2009/10/09/2"
    },
    {
      "source": "secalert@redhat.com",
      "url": "http://www.openwall.com/lists/oss-security/2009/10/09/3"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/2875"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/53729"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://osvdb.org/58836"
    },
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      "tags": [
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      ],
      "url": "http://secunia.com/advisories/36996"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://secunia.com/advisories/37913"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://unbound.net/pipermail/unbound-users/2009-October/000852.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2009/dsa-1963"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2009/10/09/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2009/10/09/3"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/53729"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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