CVE-2016-7093

Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation.

CVSS v3 8.2 HIGH
CVSS v2.0 7.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector : AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitability : 1.5 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
http://support.citrix.com/article/CTX216071	Third Party Advisory
http://www.securityfocus.com/bid/92865
http://www.securitytracker.com/id/1036752	VDB Entry Third Party Advisory
http://xenbits.xen.org/xsa/advisory-186.html	Patch Vendor Advisory
http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patch	Patch Vendor Advisory
https://security.gentoo.org/glsa/201611-09

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:xen:xen:4.5.3:::::::*
	cpe:2.3:o:xen:xen:4.6.3:::::::*
	cpe:2.3:o:xen:xen:4.7.0:::::::*

History

No history.

Information

Published : 2016-09-21 14:25

Updated : 2017-07-01 01:30

NVD link : CVE-2016-7093

Mitre link : CVE-2016-7093

CVE.ORG link : CVE-2016-7093

JSON object : View

Products Affected

xen

xen

CWE

CWE-264

Permissions, Privileges, and Access Controls

{"id": "CVE-2016-7093", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 8.2, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.5}]}, "published": "2016-09-21T14:25:24.097", "references": [{"url": "http://support.citrix.com/article/CTX216071", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.securityfocus.com/bid/92865", "source": "cve@mitre.org"}, {"url": "http://www.securitytracker.com/id/1036752", "tags": ["VDB Entry", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://xenbits.xen.org/xsa/advisory-186.html", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patch", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/201611-09", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-264"}]}], "descriptions": [{"lang": "en", "value": "Xen 4.5.3, 4.6.3, and 4.7.x allow local HVM guest OS administrators to overwrite hypervisor memory and consequently gain host OS privileges by leveraging mishandling of instruction pointer truncation during emulation."}, {"lang": "es", "value": "Xen 4.5.3, 4.6.3 y 4.7.x permiten a administradores locales del SO invitado HVM sobreescribir memoria del hipervisor y consecuentemente obtener privilegios del SO anfitri\u00f3n aprovechando el mal manejo del truncamiento del puntero de instrucci\u00f3n durante la emulaci\u00f3n."}], "lastModified": "2017-07-01T01:30:04.890", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3374F1FB-70F9-4EBC-837B-0D42282E3E5F"}, {"criteria": "cpe:2.3:o:xen:xen:4.6.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "14442705-D243-4250-A486-E70989946D73"}, {"criteria": "cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F1DD0255-9127-4C7F-9C02-42198820363E"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}