
CVE-2016-9932 – Gentoo Linux Security Advisory 201612-56
https://notcve.org/view.php?id=CVE-2016-9932
02 Jan 2017 — CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stack memory via a "supposedly-ignored" operand size prefix. Emulación CMPXCHG8B en Xen 3.3.x hasta la versión 4.7.x en sistemas x86 permite a usuarios locales HVM invitados del SO obtener información sensible de la memoria basada en pila del anfitrión a través de un prefijo de tamaño de operando "supuestamente ignorado". Jan Beulich and Jann Horn discovered multiple vulner... • http://www.debian.org/security/2017/dsa-3847 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2016-9378 – Gentoo Linux Security Advisory 201612-56
https://notcve.org/view.php?id=CVE-2016-9378
02 Jan 2017 — Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging an incorrect choice for software interrupt delivery. Xen 4.5.x hasta la versión 4.7.x en sistemas AMD sin la funcionalidad NRip, cuando se emulan instrucciones que generan interrupciones de software, permite a usuarios locales de SO huésped HVM provocar una denegación de servicio (caída del inv... • http://www.securityfocus.com/bid/94475 • CWE-284: Improper Access Control •

CVE-2016-7777 – Gentoo Linux Security Advisory 201611-09
https://notcve.org/view.php?id=CVE-2016-7777
07 Oct 2016 — Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it. Xen 4.7.x y versiones anteriores no respeta adecuadamente CR0.TS y CR0.EM, lo que permite a usuarios locales x86 HVM del SO invitado leer o modificar información del estado de registro FPU, MMX o XMM que pertenece a tareas a... • http://www.securityfocus.com/bid/93344 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVE-2016-7094 – Gentoo Linux Security Advisory 201611-09
https://notcve.org/view.php?id=CVE-2016-7094
21 Sep 2016 — 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. Multiple vulnerabilities have been found in Xen, the worst of which allows gaining of privileges on ... • http://support.citrix.com/article/CTX216071 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVE-2016-7093 – Gentoo Linux Security Advisory 201611-09
https://notcve.org/view.php?id=CVE-2016-7093
21 Sep 2016 — 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. Multiple vulnerabilities hav... • http://support.citrix.com/article/CTX216071 • CWE-264: Permissions, Privileges, and Access Controls •

CVE-2016-7154
https://notcve.org/view.php?id=CVE-2016-7154
21 Sep 2016 — Use-after-free vulnerability in the FIFO event channel code in Xen 4.4.x allows local guest OS administrators to cause a denial of service (host crash) and possibly execute arbitrary code or obtain sensitive information via an invalid guest frame number. Vulnerabilidad de uso después de liberación de memoria en el código de canal de evento FIFO en Xen 4.4.x permite a administradores locales del SO invitado provocar una denegación de servicio (caída de host) y posiblemente ejecutar código arbitrario u obtene... • http://support.citrix.com/article/CTX216071 • CWE-416: Use After Free •

CVE-2016-6259
https://notcve.org/view.php?id=CVE-2016-6259
02 Aug 2016 — 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 (hipe... • http://support.citrix.com/article/CTX214954 • CWE-20: Improper Input Validation •

CVE-2016-6258 – Debian Security Advisory 3633-1
https://notcve.org/view.php?id=CVE-2016-6258
28 Jul 2016 — 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. Multiple vulnerabilities ... • http://support.citrix.com/article/CTX214954 • CWE-284: Improper Access Control •

CVE-2016-5242 – Debian Security Advisory 3633-1
https://notcve.org/view.php?id=CVE-2016-5242
07 Jun 2016 — The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion. La función p2m_teardown en arch/arm/p2m.c en Xen 4.4.x hasta la versión 4.6.x permite a usuarios locales invitados del SO con acceso al dominio del controlador provocar una denegación de servicio (referencia a punte... • http://www.debian.org/security/2016/dsa-3633 •

CVE-2016-4962 – Debian Security Advisory 3633-1
https://notcve.org/view.php?id=CVE-2016-4962
07 Jun 2016 — The libxl device-handling in Xen 4.6.x and earlier allows local OS guest administrators to cause a denial of service (resource consumption or management facility confusion) or gain host OS privileges by manipulating information in guest controlled areas of xenstore. libxl device-handling en Xen 4.6.x y versiones anteriores permite a administradores locales invitados de SO provocar una denegación de servicio (consumo de recurso o confusión de facilidad de gestión) u obtener privilegios de anfitrión de SO man... • http://www.debian.org/security/2016/dsa-3633 • CWE-264: Permissions, Privileges, and Access Controls •