CVSS: 8.2EPSS: 0%CPEs: 3EXPL: 0CVE-2016-7093
https://notcve.org/view.php?id=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. 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 anfitrión aprovechando el mal manejo del truncamiento del puntero de instrucción durante la emulación. • http://support.citrix.com/article/CTX216071 http://www.securityfocus.com/bid/92865 http://www.securitytracker.com/id/1036752 http://xenbits.xen.org/xsa/advisory-186.html http://xenbits.xen.org/xsa/xsa186-0001-x86-emulate-Correct-boundary-interactions-of-emulate.patch https://security.gentoo.org/glsa/201611-09 • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 4.1EPSS: 0%CPEs: 1EXPL: 0CVE-2016-7094
https://notcve.org/view.php?id=CVE-2016-7094
Buffer overflow in Xen 4.7.x and earlier allows local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update. Desbordamiento de búfer en Xen 4.7.x y versiones anteriores permite a administradores locales del SO invitado x86 HVM ejecutado con paginación sombra provocar una denegación de servicio a través de una actualización de tabla de página. • http://support.citrix.com/article/CTX216071 http://www.debian.org/security/2016/dsa-3663 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/92864 http://www.securitytracker.com/id/1036753 http://xenbits.xen.org/xsa/advisory-187.html http://xenbits.xen.org/xsa/xsa187-0001-x86-shadow-Avoid-overflowing-sh_ctxt-seg_reg.patch https://security.gentoo.org/glsa/201611-09 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.2EPSS: 0%CPEs: 14EXPL: 0CVE-2016-6259
https://notcve.org/view.php?id=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. 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. • http://support.citrix.com/article/CTX214954 http://www.securityfocus.com/bid/92130 http://www.securitytracker.com/id/1036447 http://xenbits.xen.org/xsa/advisory-183.html http://xenbits.xen.org/xsa/xsa183-4.6.patch http://xenbits.xen.org/xsa/xsa183-unstable.patch • CWE-20: Improper Input Validation •
CVSS: 8.8EPSS: 0%CPEs: 33EXPL: 0CVE-2016-6258
https://notcve.org/view.php?id=CVE-2016-6258
The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries. El código de tabla de página PV en arch/x86/mm.c en Xen 4.7.x y versiones anteriores permite a administradores 32-bit PV locales del SO invitado obtener privilegios de administrador del SO mediante el aprovechamiento de fast_paths para la actualización de las entradas de la tabla de página. • http://support.citrix.com/article/CTX214954 http://www.debian.org/security/2016/dsa-3633 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/92131 http://www.securitytracker.com/id/1036446 http://xenbits.xen.org/xsa/advisory-182.html http://xenbits.xen.org/xsa/xsa182-4.5.patch http://xenbits.xen.org/xsa/xsa182-4.6.patch http://xenbits.xen.org/xsa/xsa182-unstable.patch https://security.gentoo.org/glsa/201611- • CWE-284: Improper Access Control •