FKIE_CVE-2012-2739

Vulnerability from fkie_nvd - Published: 2012-11-28 13:03 - Updated: 2026-06-16 23:42
Severity
Summary
Oracle Java SE before 7 Update 6, and OpenJDK 7 before 7u6 build 12 and 8 before build 39, computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.
References
secalert@redhat.comhttp://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.htmlExploit
secalert@redhat.comhttp://mail.openjdk.java.net/pipermail/core-libs-dev/2012-May/010238.htmlVendor Advisory
secalert@redhat.comhttp://www.kb.cert.org/vuls/id/903934US Government Resource
secalert@redhat.comhttp://www.nruns.com/_downloads/advisory28122011.pdf
secalert@redhat.comhttp://www.ocert.org/advisories/ocert-2011-003.html
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2012/06/15/12
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2012/06/17/1
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=750533
af854a3a-2127-422b-91ae-364da2661108http://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.htmlExploit
af854a3a-2127-422b-91ae-364da2661108http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-May/010238.htmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.kb.cert.org/vuls/id/903934US Government Resource
af854a3a-2127-422b-91ae-364da2661108http://www.nruns.com/_downloads/advisory28122011.pdf
af854a3a-2127-422b-91ae-364da2661108http://www.ocert.org/advisories/ocert-2011-003.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/06/15/12
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2012/06/17/1
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=750533
Impacted products
Vendor Product Version
oracle jdk *
oracle jdk 1.7.0
oracle jdk 1.7.0
oracle jdk 1.7.0
oracle jdk 1.7.0
oracle jdk 1.7.0
oracle jre *
oracle jre 1.7.0
oracle jre 1.7.0
oracle jre 1.7.0
oracle jre 1.7.0
oracle jre 1.7.0
oracle openjdk *
oracle openjdk 1.6.0
oracle openjdk 1.8.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
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      "source": "secalert@redhat.com"
    }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Oracle Java SE before 7 Update 6, and OpenJDK 7 before 7u6 build 12 and 8 before build 39, computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table."
    },
    {
      "lang": "es",
      "value": "Oracle Java SE anteriores a 7 Update 6, y OpenJDK 7 anteriores a 7u6 build 12 y 8 anteriores a build 39, calculan los valores de hash sin restringir la posibilidad de provocar colisiones hash previsibles, lo que permite a atacantes dependientes de contexto provocar una denegaci\u00f3n de servicio (consumo de CPU) a trav\u00e9s de la manipulaci\u00f3n de una entrada para la aplicaci\u00f3n que mantiene la tabla de valores hash."
    }
  ],
  "id": "CVE-2012-2739",
  "lastModified": "2026-06-16T23:42:00.790",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2012-11-28T13:03:09.793",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Exploit"
      ],
      "url": "http://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.html"
    },
    {
      "source": "secalert@redhat.com",
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    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      "url": "http://www.kb.cert.org/vuls/id/903934"
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      "url": "http://www.nruns.com/_downloads/advisory28122011.pdf"
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      "source": "secalert@redhat.com",
      "url": "http://www.ocert.org/advisories/ocert-2011-003.html"
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      "source": "secalert@redhat.com",
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      "url": "http://www.ocert.org/advisories/ocert-2011-003.html"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "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

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Nomenclature

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