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utiliza un tipo de datos insuficientemente grande para ciertos datos de extensi\u00f3n, lo que permite a usuarios locales causar una denegaci\u00f3n de servicio (referencia a puntero nulo y OOPS) a trav\u00e9s de trafico de red saliente que provoca la carga de extensiones, tal y como fue demostrado mediante la configuraci\u00f3n de un t\u00fanel PPTP en un entorno NAT."}], "evaluatorComment": "<a href=\"http://cwe.mitre.org/data/definitions/476.html\">CWE-476: NULL Pointer Dereference</a>", "id": "CVE-2014-9715", "lastModified": "2026-06-17T00:18:51.877", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 4.9, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.9, "obtainAllPrivilege": false, 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{"acknowledgement": "Red Hat would like to thank Nathan Hoad for reporting this issue.", "affected_release": [{"advisory": "RHSA-2015:1565", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-229.11.1.rt56.141.11.el7_1", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-08-05T00:00:00Z"}, {"advisory": "RHSA-2015:1534", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-229.11.1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2015-08-06T00:00:00Z"}, {"advisory": "RHSA-2015:1564", "cpe": "cpe:/a:redhat:enterprise_mrg:2:server:el6", "package": "kernel-rt-1:3.10.0-229.rt56.158.el6rt", "product_name": "Red Hat Enterprise MRG 2", "release_date": "2015-08-05T00:00:00Z"}], "bugzilla": {"description": "kernel: netfilter connection tracking extensions denial of service", "id": "1208684", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1208684"}, "csaw": false, "cvss": {"cvss_base_score": "5.7", "cvss_scoring_vector": "AV:A/AC:M/Au:N/C:N/I:N/A:C", "status": "verified"}, "cwe": "CWE-841", "details": ["include/net/netfilter/nf_conntrack_extend.h in the netfilter subsystem in the Linux kernel before 3.14.5 uses an insufficiently large data type for certain extension data, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via outbound network traffic that triggers extension loading, as demonstrated by configuring a PPTP tunnel in a NAT environment.", "An integer overflow flaw was found in the way the Linux kernel's netfilter connection tracking implementation loaded extensions. An attacker on a local network could potentially send a sequence of specially crafted packets that would initiate the loading of a large number of extensions, causing the targeted system in that network to crash."], "name": "CVE-2014-9715", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2015-04-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2014-9715\nhttps://nvd.nist.gov/vuln/detail/CVE-2014-9715"], "statement": "This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6. This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2.\nFor additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.", "threat_severity": "Moderate"}

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