CVE-2012-2739

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"vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:oracle:openjdk:*:*:*:*:*:*:*:*", "matchCriteriaId": "9E496C8B-BA28-4E4F-8168-10E623179DF9", "versionEndIncluding": "1.7.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:oracle:openjdk:1.6.0:*:*:*:*:*:*:*", "matchCriteriaId": "3A6505E4-8E6A-4888-8B9C-2B2C10546CB6", "vulnerable": true}, {"criteria": "cpe:2.3:a:oracle:openjdk:1.8.0:*:*:*:*:*:*:*", "matchCriteriaId": "2CA81243-2FC7-481B-AFD8-067E3EC9DF77", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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", "tags": ["Vendor Advisory"], "url": "http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-May/010238.html"}, {"source": "secalert@redhat.com", "tags": ["US Government Resource"], "url": "http://www.kb.cert.org/vuls/id/903934"}, {"source": "secalert@redhat.com", "url": "http://www.nruns.com/_downloads/advisory28122011.pdf"}, {"source": "secalert@redhat.com", "url": "http://www.ocert.org/advisories/ocert-2011-003.html"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2012/06/15/12"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2012/06/17/1"}, {"source": "secalert@redhat.com", "url": 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{"acknowledgement": "Red Hat would like to thank oCERT for reporting this issue.", "bugzilla": {"description": "java: hash table collisions CPU usage DoS (oCERT-2011-003)", "id": "750533", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=750533"}, "csaw": false, "cvss": {"cvss_base_score": "5.0", "cvss_scoring_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "status": "draft"}, "details": ["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."], "name": "CVE-2012-2739", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Will not fix", "package_name": "java-1.5.0-ibm", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Will not fix", "package_name": "java-1.6.0-ibm", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Will not fix", "package_name": "java-1.6.0-sun", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "java-1.5.0-ibm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "java-1.6.0-ibm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "java-1.6.0-openjdk", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "java-1.6.0-sun", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "java-1.5.0-ibm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "java-1.6.0-ibm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "java-1.6.0-openjdk", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "java-1.6.0-sun", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2011-12-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2012-2739\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-2739"], "statement": "This flaw affects various versions of Java as shipped with Red Hat products. A patch is available for Java 7 and Java 8, but not for previous versions of Java shipped with Red Hat products. Although no patch is available for previous versions of Java as shipped with Red Hat products, the impact of this flaw has been addressed in several components that utilize Java HashMap in such a way that may expose a denial of service flaw.", "threat_severity": "Moderate"}

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