{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2016-03-16T00:00:00", "descriptions": [{"lang": "en", "value": "The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2016-11-30T18:57:01", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "USN-2971-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2971-2"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://xenbits.xen.org/xsa/advisory-171.html"}, {"name": "USN-2970-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2970-1"}, {"tags": ["x_refsource_CONFIRM"], "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"name": "USN-2969-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2969-1"}, {"name": "USN-2968-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2968-1"}, {"name": "USN-2971-3", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2971-3"}, {"name": "USN-2997-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2997-1"}, {"name": "DSA-3607", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "http://www.debian.org/security/2016/dsa-3607"}, {"name": "USN-2971-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2971-1"}, {"name": "USN-2996-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2996-1"}, {"name": "USN-2968-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU"], "url": "http://www.ubuntu.com/usn/USN-2968-2"}, {"name": "1035308", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1035308"}, {"name": "84594", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/84594"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2016-3157", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "USN-2971-2", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2971-2"}, {"name": "http://xenbits.xen.org/xsa/advisory-171.html", "refsource": "CONFIRM", "url": "http://xenbits.xen.org/xsa/advisory-171.html"}, {"name": "USN-2970-1", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2970-1"}, {"name": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html", "refsource": "CONFIRM", "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"name": "USN-2969-1", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2969-1"}, {"name": "USN-2968-1", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2968-1"}, {"name": "USN-2971-3", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2971-3"}, {"name": "USN-2997-1", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2997-1"}, {"name": "DSA-3607", "refsource": "DEBIAN", "url": "http://www.debian.org/security/2016/dsa-3607"}, {"name": "USN-2971-1", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2971-1"}, {"name": "USN-2996-1", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2996-1"}, {"name": "USN-2968-2", "refsource": "UBUNTU", "url": "http://www.ubuntu.com/usn/USN-2968-2"}, {"name": "1035308", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1035308"}, {"name": "84594", "refsource": "BID", "url": "http://www.securityfocus.com/bid/84594"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T23:47:57.945Z"}, "title": "CVE Program Container", "references": [{"name": "USN-2971-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2971-2"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://xenbits.xen.org/xsa/advisory-171.html"}, {"name": "USN-2970-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2970-1"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"name": "USN-2969-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2969-1"}, {"name": "USN-2968-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2968-1"}, {"name": "USN-2971-3", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2971-3"}, {"name": "USN-2997-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2997-1"}, {"name": "DSA-3607", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "http://www.debian.org/security/2016/dsa-3607"}, {"name": "USN-2971-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2971-1"}, {"name": "USN-2996-1", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2996-1"}, {"name": "USN-2968-2", "tags": ["vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "url": "http://www.ubuntu.com/usn/USN-2968-2"}, {"name": "1035308", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://www.securitytracker.com/id/1035308"}, {"name": "84594", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/84594"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2016-3157", "datePublished": "2016-04-12T16:00:00", "dateReserved": "2016-03-15T00:00:00", "dateUpdated": "2024-08-05T23:47:57.945Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:4.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "550223A9-B9F1-440A-8C25-9F0F76AF7301", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*", "matchCriteriaId": "B6B7CAD7-9D4E-4FDB-88E3-1E583210A01F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access."}, {"lang": "es", "value": "La funci\u00f3n __switch_to en arch/x86/kernel/process_64.c en el kernel de Linux no sustituye correctamente el conmutador de contexto IOPL en invitados 64-bit PV Xen, lo que permite a usuarios locales del SO invitado obtener privilegios, provocar una denegaci\u00f3n de servicio (ca\u00edda del SO invitado), u obtener informaci\u00f3n sensible aprovechando el puerto de acceso I/O."}], "id": "CVE-2016-3157", "lastModified": "2016-12-03T03:26:39.553", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-04-12T16:59:02.423", "references": [{"source": "cve@mitre.org", "url": "http://www.debian.org/security/2016/dsa-3607"}, {"source": "cve@mitre.org", "url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"}, {"source": "cve@mitre.org", "url": "http://www.securityfocus.com/bid/84594"}, {"source": "cve@mitre.org", "url": "http://www.securitytracker.com/id/1035308"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2968-1"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2968-2"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2969-1"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2970-1"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2971-1"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2971-2"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2971-3"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2996-1"}, {"source": "cve@mitre.org", "url": "http://www.ubuntu.com/usn/USN-2997-1"}, {"source": "cve@mitre.org", "tags": ["Patch", "Vendor Advisory"], "url": "http://xenbits.xen.org/xsa/advisory-171.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-264"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Andy Lutomirski for reporting this issue.", "bugzilla": {"description": "kernel: xen: Privilege escalation on 64-bit Xen PV domains with IO port access privileges (XSA-171)", "id": "1315711", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1315711"}, "csaw": false, "cvss": {"cvss_base_score": "6.9", "cvss_scoring_vector": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "status": "draft"}, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-250", "details": ["The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.", "A flaw in the Linux kernel was found in the way IOPL was handled during context switches in 64-bit Xen PV guests. A local guest user could potentially use this flaw to escalate their privileges in the guest."], "name": "CVE-2016-3157", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2016-03-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-3157\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-3157"], "threat_severity": "Moderate"}