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CVSS: 9.8EPSS: 0%CPEs: 27EXPL: 0

13 May 2013 — Xen 3.1 through 4.x, when running 64-bit hosts on Intel CPUs, does not clear the NT flag when using an IRET after a SYSENTER instruction, which allows PV guest users to cause a denial of service (hypervisor crash) by triggering a #GP fault, which is not properly handled by another IRET instruction. Xen 3.1 a la 4.x, cuando ejecuta hosts con arquitectura de 64 bits en CPUs Intel, no limpia la bandera NT cuan emplea una IRET después de una instrucción SYSENTER, lo que permite a usuarios PV provocar una denega... • http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html • CWE-20: Improper Input Validation •

CVSS: 9.8EPSS: 0%CPEs: 9EXPL: 0

13 May 2013 — Certain page table manipulation operations in Xen 4.1.x, 4.2.x, and earlier are not preemptible, which allows local PV kernels to cause a denial of service via vectors related to "deep page table traversal." Determinadas operaciones de manipulación de tablas en Xen 4.1.x, 4.2.x y anteriores, permite a kernels PV locales provocar una denegación de servicio a través de vectores relacionados con "deep page table traversal." Multiple vulnerabilities have been found in Xen, allowing attackers on a Xen Virtual Ma... • http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105533.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 9.8EPSS: 0%CPEs: 9EXPL: 0

13 May 2013 — Xen 4.2.x and 4.1.x does not properly restrict access to IRQs, which allows local stub domain clients to gain access to IRQs and cause a denial of service via vectors related to "passed-through IRQs or PCI devices." Xen 4.2.x y 4.1.x no restringe adecuadamente el acceso a las IRQs, lo que permite a clientes locales del subdominio obtener acceso a IRQs y provocar una denegación de servicio a través de vectores relacionados con "dispositivos PCI o passed-through IRQs". Multiple vulnerabilities have been found... • http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104537.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 9.8EPSS: 0%CPEs: 3EXPL: 0

13 May 2013 — qemu-nbd in QEMU, as used in Xen 4.2.x, determines the format of a raw disk image based on the header, which allows local guest OS administrators to read arbitrary files on the host by modifying the header to identify a different format, which is used when the guest is restarted, a different vulnerability than CVE-2008-2004. qemu-nbd en QEMU, tal como se utiliza en Xen v4.2.x, determina el formato de una imagen de disco en bruto basada en la cabecera, que permite a los administradores locales de sistema ope... • http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103621.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 7.1EPSS: 0%CPEs: 13EXPL: 0

13 May 2013 — Xen 4.x, when using Intel VT-d for a bus mastering capable PCI device, does not properly check the source when accessing a bridge device's interrupt remapping table entries for MSI interrupts, which allows local guest domains to cause a denial of service (interrupt injection) via unspecified vectors. Xen 4.x, cuando utiliza Intel VT-d para un bus capaz de dominar un dispositivo PCI, no comprueba correctamente la fuente de acceso a una interrupción de entradas en la tabla de resignación para MSI de dispositi... • http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105533.html • CWE-20: Improper Input Validation •

CVSS: 9.8EPSS: 0%CPEs: 29EXPL: 0

12 Apr 2013 — Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors. Xen v4.2.x, v4.1.x, y anteriores, cuando el hypervisor se está ejecutando "bajo presión de memoria" y el Módulo de Seguridad Xen (XSM) está activado,... • http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 7.7EPSS: 0%CPEs: 2EXPL: 0

07 Mar 2013 — The do_hvm_op function in xen/arch/x86/hvm/hvm.c in Xen 4.2.x on the x86_32 platform does not prevent HVM_PARAM_NESTEDHVM (aka nested virtualization) operations, which allows guest OS users to cause a denial of service (long-duration page mappings and host OS crash) by leveraging administrative access to an HVM guest in a domain with a large number of VCPUs. La función en xen/arch/x86/hvm/hvm.c en Xen v4.2.x en la plataforma x86_32 no previenen operaciones HVM_PARAM_NESTEDHVM (también conocido como virtuali... • http://openwall.com/lists/oss-security/2013/01/22/10 • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 9.6EPSS: 0%CPEs: 7EXPL: 0

07 Mar 2013 — oxenstored in Xen 4.1.x, Xen 4.2.x, and xen-unstable does not properly consider the state of the Xenstore ring during read operations, which allows guest OS users to cause a denial of service (daemon crash and host-control outage, or memory consumption) or obtain sensitive control-plane data by leveraging guest administrative access. oxenstored en Xen v4.1.x, Xen v4.2.x, y xen inestable no considera debidamente en cuenta el estado del anillo Xenstore durante las operaciones de lectura, que permite a usuario... • http://openwall.com/lists/oss-security/2013/02/05/10 • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 8.4EPSS: 0%CPEs: 8EXPL: 0

14 Feb 2013 — The AMD IOMMU support in Xen 4.2.x, 4.1.x, 3.3, and other versions, when using AMD-Vi for PCI passthrough, uses the same interrupt remapping table for the host and all guests, which allows guests to cause a denial of service by injecting an interrupt into other guests. El soporte de Xen para AMD IOMMU en v4.2.x, v4.1.x, v3.3, and otras versiones, cuando usa AMD-Vi para el paso por el PCI, usa la misma tabla para el trazado de interrupciones por el host y los anfitriones, lo que permite a los invitados causa... • http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html •

CVSS: 6.1EPSS: 0%CPEs: 8EXPL: 0

14 Feb 2013 — Xen 4.2.x, 4.1.x, and 4.0, when using Intel VT-d for PCI passthrough, does not properly configure VT-d when supporting a device that is behind a legacy PCI Bridge, which allows local guests to cause a denial of service to other guests by injecting an interrupt. Xen v4.2.x, v4.1.x, y v4.0, cuando usa Intel VT-d para el paso por el PCI, no configura apropiadamente VT-d cuando soporta un dispositivo que esta detrás de un puente PCI heredado, lo que permite a invitados locales causar una denegación de servicio ... • http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html • CWE-16: Configuration •