CVE-2016-6259

SUSE Security Advisory - SUSE-SU-2016:2093-1

Severity Score

6.2

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Xen 4.5.x hasta la version 4.7.x no implementa listas blancas Supervisor Mode Access Prevencion (SMAP) en excepción 32 bits y entrega de eventos, lo que permite a kernels 32-bit PV locales del SO invitado provocar una denegación de servicio (hipervisor y caida VM) mediante la activación de un control de seguridad.

An update that solves 27 vulnerabilities and has 18 fixes is now available. This update for xen to version 4.5.3 fixes the several issues. These security issues were fixed.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-07-20 CVE Reserved
2016-08-02 CVE Published
2024-08-06 CVE Updated
2025-06-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (6)

URL	Tag	Source
http://www.securityfocus.com/bid/92130	Third Party Advisory
http://www.securitytracker.com/id/1036447	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://xenbits.xen.org/xsa/advisory-183.html	2016-08-04
http://xenbits.xen.org/xsa/xsa183-4.6.patch	2016-08-04
http://xenbits.xen.org/xsa/xsa183-unstable.patch	2016-08-04

URL	Date	SRC
http://support.citrix.com/article/CTX214954	2016-08-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.5.0 Search vendor "Xen" for product "Xen" and version "4.5.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.5.1 Search vendor "Xen" for product "Xen" and version "4.5.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.5.2 Search vendor "Xen" for product "Xen" and version "4.5.2"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.5.3 Search vendor "Xen" for product "Xen" and version "4.5.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.6.0 Search vendor "Xen" for product "Xen" and version "4.6.0"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.6.1 Search vendor "Xen" for product "Xen" and version "4.6.1"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.6.3 Search vendor "Xen" for product "Xen" and version "4.6.3"		-		Affected
Xen Search vendor "Xen"		Xen Search vendor "Xen" for product "Xen"				4.7.0 Search vendor "Xen" for product "Xen" and version "4.7.0"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				6.0 Search vendor "Citrix" for product "Xenserver" and version "6.0"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				6.0.2 Search vendor "Citrix" for product "Xenserver" and version "6.0.2"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				6.1 Search vendor "Citrix" for product "Xenserver" and version "6.1"		-		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				6.2.0 Search vendor "Citrix" for product "Xenserver" and version "6.2.0"		sp1		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				6.5.0 Search vendor "Citrix" for product "Xenserver" and version "6.5.0"		sp1		Affected
Citrix Search vendor "Citrix"		Xenserver Search vendor "Citrix" for product "Xenserver"				7.0 Search vendor "Citrix" for product "Xenserver" and version "7.0"		-		Affected