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CVSS: 6.2EPSS: 0%CPEs: 2EXPL: 0

Xen 4.4.x, when running on an ARM system, does not properly context switch the CNTKCTL_EL1 register, which allows local guest users to modify the hardware timers and cause a denial of service (crash) via unspecified vectors. Xen 4.4.x, cuando funciona en un sistema ARM, no conmuta debidamente el contexto del registro CNTKCTL_EL1, lo que permite a usuarios locales invitados modificar los temporizadores de hardware y causar una denegación de servicio (caída) a través de vectores no especificados. • http://secunia.com/advisories/58347 http://www.openwall.com/lists/oss-security/2014/04/30/11 http://www.openwall.com/lists/oss-security/2014/04/30/5 http://www.securityfocus.com/bid/67157 http://www.securitytracker.com/id/1030184 http://xenbits.xen.org/xsa/advisory-91.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0

The vgic_distr_mmio_write function in the virtual guest interrupt controller (GIC) distributor (arch/arm/vgic.c) in Xen 4.4.x, when running on an ARM system, allows local guest users to cause a denial of service (NULL pointer dereference and host crash) via unspecified vectors. La función vgic_distr_mmio_write en el distribuidor Virtual Guest Interrupt Controller (GIC) (arch/arm/vgic.c) en Xen 4.4.x, cuando funciona en un sistema ARM, permite a usuarios locales invitados causar una denegación de servicio (referencia a puntero nulo y caída de anfitrión) a través de vectores no especificados. • http://www.openwall.com/lists/oss-security/2014/04/23/3 http://www.openwall.com/lists/oss-security/2014/04/23/4 http://www.openwall.com/lists/oss-security/2014/04/23/5 http://www.securityfocus.com/bid/67047 http://www.securitytracker.com/id/1030146 http://xenbits.xen.org/xsa/advisory-94.html • CWE-20: Improper Input Validation •

CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0

Xen 4.4.x, when running on ARM systems, does not properly restrict access to hardware features, which allows local guest users to cause a denial of service (host or guest crash) via unspecified vectors, related to (1) cache control, (2) coprocessors, (3) debug registers, and (4) other unspecified registers. Xen 4.4.x, cuando se ejecuta en sistemas ARM, no restringe debidamente el acceso hacia funcionalidades de hardware, lo cual permite a usuarios locales invitados causar una denegación de servicio (caída del invitado o del host) a través de vectores no especificados, relacionado con (1) control de cache , (2) coprocesadores, (3) registros debug y (4) otros registros no especificados. • http://www.openwall.com/lists/oss-security/2014/04/22/10 http://www.openwall.com/lists/oss-security/2014/04/23/2 http://www.securitytracker.com/id/1030135 http://xenbits.xen.org/xsa/advisory-93.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 4.9EPSS: 0%CPEs: 7EXPL: 0

The (1) do_send and (2) do_recv functions in io.c in libvchan in Xen 4.2.x, 4.3.x, and 4.4-RC series allows local guests to cause a denial of service or possibly gain privileges via crafted xenstore ring indexes, which triggers a "read or write past the end of the ring." Las funciones (1) do_send y (2) do_recv en io.c in libvchan en Xen 4.2.x, 4.3.x y series 4.4-RC permiten a invitados locales causar una denegación de servicio o posiblemente ganar privilegios a través de indices de anillo xenstore manipulados, lo que provoca un "leer o escribir pasado el final del anillo". • http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html http://security.gentoo.org/glsa/glsa-201407-03.xml http://www.openwall.com/lists/oss-security/2014/02/07/12 http://www.openwall.com/lists/oss-security/2014/02/10/7 http://xenbits.xen.org/xsa/advisory-86.html http://xenbits.xen.org/xsa/xsa86.patch • CWE-20: Improper Input Validation •

CVSS: 4.9EPSS: 0%CPEs: 22EXPL: 0

The HVMOP_set_mem_access HVM control operations in Xen 4.1.x for 32-bit and 4.1.x through 4.4.x for 64-bit allow local guest administrators to cause a denial of service (CPU consumption) by leveraging access to certain service domains for HVM guests and a large input. Las operaciones de control de HVM HVMOP_set_mem_access en Xen 4.1.x para 32 bits y 4.1.x hasta 4.4.x para 64 bits permiten a administradores locales invitados causar una denegación de servicio (consumo de CPU) mediante el aprovechamiento del acceso a ciertos dominios de servicio para invitados de HVM y una entrada grande. • http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html http://security.gentoo.org/glsa/glsa-201407-03.xml http://www.debian.org/security/2014/dsa-3006 http://www.openwall.com/lists/oss-security/2014/03/25/1 http://www.openwall.com/lists/oss-security/2014/03/25/2 http://www.securityfocus.com/bid/66407 http://www.securitytracker.com/id/1029956 http://xenbits.xen.org/xsa/advisory-89.html • CWE-20: Improper Input Validation •