CVE-2013-4368

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using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register."}, {"lang": "es", "value": "La instrucci\u00f3n de emulaci\u00f3n outs en Xen 3.1.x, 4.2.x, 4.3.x, y anteriores versiones, cuando se usa la anulaci\u00f3n del segmento FS: o GS:, utiliza una variable sin inicializar como segmento base, lo que permite a usuarios locales de 64-bit PV obtener informaci\u00f3n sensible (contenido de la pila de hipervisor) a trav\u00e9s de vectores relacionados de datos obsoletos en un registro del segmento."}], "id": "CVE-2013-4368", "lastModified": "2026-06-16T23:57:06.510", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 1.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2013-10-17T23:55:04.487", "references": [{"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html"}, {"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html"}, {"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html"}, {"source": "secalert@redhat.com", "url": "http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html"}, {"source": "secalert@redhat.com", "url": "http://rhn.redhat.com/errata/RHSA-2013-1449.html"}, {"source": "secalert@redhat.com", "url": "http://security.gentoo.org/glsa/glsa-201407-03.xml"}, {"source": "secalert@redhat.com", "url": "http://www.debian.org/security/2014/dsa-3006"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2013/10/10/10"}, {"source": "secalert@redhat.com", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/87799"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://rhn.redhat.com/errata/RHSA-2013-1449.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://security.gentoo.org/glsa/glsa-201407-03.xml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2014/dsa-3006"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2013/10/10/10"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/87799"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-200"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Xen project for reporting this issue.", "affected_release": [{"advisory": "RHSA-2013:1449", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "kernel-0:2.6.18-371.1.2.el5", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2013-10-22T00:00:00Z"}], "bugzilla": {"description": "xen: information leak through outs instruction emulation (XSA-67)", "id": "1012550", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1012550"}, "csaw": false, "cvss": {"cvss_base_score": "2.3", "cvss_scoring_vector": "AV:A/AC:M/Au:S/C:P/I:N/A:N", "status": "verified"}, "details": ["The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register."], "name": "CVE-2013-4368", "public_date": "2013-10-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-4368\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-4368\nhttp://xenbits.xen.org/xsa/advisory-67.html"], "threat_severity": "Moderate"}

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