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CVE-2009-0071

Status: ModifiedLow (2.6)—💥 Exploit

Mozilla Firefox 3.0.5 and earlier 3.0.x versions, when designMode is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a certain (a) replaceChild or (b) removeChild call, followed by a (1) queryCommandValue, (2) queryCommandState, or (3) queryCommandIndeterm call. NOTE: it was later reported that 3.0.6 and 3.0.7 are also affected.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Affected technologies (1)

Mozilla — Firefox

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2009-0071",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2009-01-08T19:30:11.297",
  "references": [
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-01/0220.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-01/0223.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-01/0224.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/33154",
      "tags": [
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      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=448329",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=456727",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=472507",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.exploit-db.com/exploits/8091",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.exploit-db.com/exploits/8219",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-01/0220.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-01/0223.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://archives.neohapsis.com/archives/fulldisclosure/2009-01/0224.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=456727",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=472507",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.exploit-db.com/exploits/8091",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.exploit-db.com/exploits/8219",
      "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": "Mozilla Firefox 3.0.5 and earlier 3.0.x versions, when designMode is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a certain (a) replaceChild or (b) removeChild call, followed by a (1) queryCommandValue, (2) queryCommandState, or (3) queryCommandIndeterm call.  NOTE: it was later reported that 3.0.6 and 3.0.7 are also affected."
    },
    {
      "lang": "es",
      "value": "Mozilla Firefox versión 3.0.5 y anteriores de 3.0.x, cuando designMode está habilitado, permite a atacantes remotos causar una denegación de servicio (desreferencia de un puntero NULL y bloqueo de aplicación) por medio de cierta llamada de (a) replaceChild o (b) removeChild, seguida por una llamada de (1) queryCommandValue, (2) queryCommandState, o (3) queryCommandIndeterm. NOTA: más tarde se informó que las versiones 3.0.6 y 3.0.7 también están afectadas."
    }
  ],
  "lastModified": "2026-06-16T23:04:12.470",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:3.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "412DF091-7604-4110-87A0-3488116A97E5"
            },
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              "vulnerable": true,
              "matchCriteriaId": "7A1DE6AC-C6AA-4B27-AC21-3293E5357A7E"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:3.0:beta2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "13AAF607-AEEE-4FAF-BE63-73B1D951EF52"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:3.0:beta5:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "20139741-10B1-4E4B-8D5F-A715042049C4"
            },
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              "vulnerable": true,
              "matchCriteriaId": "11E07FED-ABDB-4B0A-AB2E-4CBF1EAC4301"
            },
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              "vulnerable": true,
              "matchCriteriaId": "9A6558F1-9E0D-4107-909A-8EF4BC8A9C2F"
            },
            {
              "criteria": "cpe:2.3:a:mozilla:firefox:3.0.3:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "63DF3D65-C992-44CF-89B4-893526C6242E"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "A9024117-2E8B-4240-9E21-CC501F3879B5"
            },
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              "vulnerable": true,
              "matchCriteriaId": "FBC3CAD3-2F54-4E32-A0C9-0D826C45AC23"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "vendorComments": [
    {
      "comment": "Red Hat does not consider a crash of a client application such as Firefox to be a security issue.",
      "lastModified": "2009-01-19T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}