CVE-2016-6259

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.

CVSS v3.0 6.2 MEDIUM
CVSS v2.0 4.9 MEDIUM

6.2^/10

CVSS v3.0 : MEDIUM

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

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://xenbits.xen.org/xsa/xsa183-4.6.patch	Mitigation Patch
http://xenbits.xen.org/xsa/xsa183-unstable.patch	Mitigation Patch
http://support.citrix.com/article/CTX214954	Vendor Advisory
http://xenbits.xen.org/xsa/advisory-183.html	Mailing List Patch
http://www.securityfocus.com/bid/92130	Third Party Advisory
http://www.securitytracker.com/id/1036447	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:xen:xen:4.7.0:::::::*
	cpe:2.3:o:xen:xen:4.6.3:::::::*
	cpe:2.3:o:xen:xen:4.5.0:::::::*
	cpe:2.3:o:xen:xen:4.5.1:::::::*
	cpe:2.3:o:xen:xen:4.6.1:::::::*
	cpe:2.3:o:xen:xen:4.5.3:::::::*
	cpe:2.3:o:xen:xen:4.6.0:::::::*
	cpe:2.3:o:xen:xen:4.5.2:::::::*

Configuration 2 (hide)

OR	cpe:2.3:a:citrix:xenserver:6.2.0:sp1::::::
	cpe:2.3:a:citrix:xenserver:7.0:::::::*
	cpe:2.3:a:citrix:xenserver:6.5.0:sp1::::::
	cpe:2.3:a:citrix:xenserver:6.0.2:::::::*
	cpe:2.3:a:citrix:xenserver:6.0:::::::*
	cpe:2.3:a:citrix:xenserver:6.1:::::::*

Information

Published : 2016-08-02 09:59

Updated : 2016-08-03 20:15

NVD link : CVE-2016-6259

Mitre link : CVE-2016-6259

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

citrix

xenserver

xen

xen

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