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CVSS: 5.5EPSS: 0%CPEs: 11EXPL: 0

15 Jun 2015 — GNTTABOP_swap_grant_ref in Xen 4.2 through 4.5 does not check the grant table operation version, which allows local guest domains to cause a denial of service (NULL pointer dereference) via a hypercall without a GNTTABOP_setup_table or GNTTABOP_set_version. GNTTABOP_swap_grant_ref en Xen 4.2 hasta 4.5 no comprueba la versión de la operación de ceder tablas, lo que permite a dominios locales invitados causar una denegación de servicio (referencia a puntero nulo) a través de una hiperllamada sin GNTTABOP_setu... • http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html •

CVSS: 9.8EPSS: 0%CPEs: 37EXPL: 0

15 Jun 2015 — The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set. La función compat_iret en Xen 3.1 hasta 4.5 itera en la dirección errónea a través de un bucle, lo que permite a administradores locales invitados de PV de 32 dits causar una denegación de servicio (bucle grande y cuelgue del sistema) a través de una llamada hypercall_ir... • http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html • CWE-399: Resource Management Errors •

CVSS: 6.0EPSS: 0%CPEs: 30EXPL: 0

03 Jun 2015 — Xen 3.3.x through 4.5.x does not properly restrict write access to the host MSI message data field, which allows local x86 HVM guest administrators to cause a denial of service (host interrupt handling confusion) via vectors related to qemu and accessing spanning multiple fields. Xen 3.3.x hasta la versión 4.5.x no restringe correctamente el acceso a escritura al campo de datos del mensaje MSI del host, lo que permite a administradores invitados x86 HVM locales causar una denegación de servicio (confusión e... • http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 7.8EPSS: 2%CPEs: 31EXPL: 0

03 Jun 2015 — Xen 3.3.x through 4.5.x does not properly restrict access to PCI MSI mask bits, which allows local x86 HVM guest users to cause a denial of service (unexpected interrupt and host crash) via unspecified vectors. Xen 3.3.x hasta 4.5.x no restringe correctamente el acceso a los bits de máscara PCI MSI, lo que permite a usuarios locales invitados de x86 HVM causar una denegación de servicio (interrupción no esperado y caída de anfitrión) a través de vectores no especificados. Matt Tait discovered that QEMU inco... • http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 5.5EPSS: 0%CPEs: 31EXPL: 0

03 Jun 2015 — Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service (host disk consumption) via certain invalid operations. Xen 3.3.x hasta 4.5.x habilita el registro para mensajes de error 'pass-through' de PCI MSI-X, lo que permite a invitados locales de x86 HVM causar una denegación de servicio (consumo de disco de anfitrión) a través de ciertas operaciones inválidas. Matt Tait discovered that QEMU incorrectly handled the virtu... • http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html • CWE-399: Resource Management Errors •

CVSS: 7.5EPSS: 0%CPEs: 27EXPL: 0

28 Apr 2015 — Xen 4.2.x through 4.5.x does not initialize certain fields, which allows certain remote service domains to obtain sensitive information from memory via a (1) XEN_DOMCTL_gettscinfo or (2) XEN_SYSCTL_getdomaininfolist request. Xen 4.2.x hasta 4.5.x no inicializa ciertos campos, lo que permite a ciertos dominios de servicio remotos obtener información sensible de la memoria a través de una solicitud (1) XEN_DOMCTL_gettscinfo o (2) XEN_SYSCTL_getdomaininfolist. Multiple security issues have been found in the Xe... • http://lists.fedoraproject.org/pipermail/package-announce/2015-April/156005.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 8.8EPSS: 0%CPEs: 4EXPL: 0

18 Mar 2015 — Xen 4.5.x and earlier enables certain default backends when emulating a VGA device for an x86 HVM guest qemu even when the configuration disables them, which allows local guest users to obtain access to the VGA console by (1) setting the DISPLAY environment variable, when compiled with SDL support, or connecting to the VNC server on (2) ::1 or (3) 127.0.0.1, when not compiled with SDL support. Xen 4.5.x y anteriores capacita a ciertos backends por defecto cuando emula un dispositivo VGA para una gemu invita... • http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 5.5EPSS: 0%CPEs: 32EXPL: 0

12 Mar 2015 — Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response. Xen 3.3.x hasta la versión 4.5.x y en el kernel de Linux hasta la versión 3.19.1 no restringe adecuadamente el acceso al registro... • http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=af6fc858a35b90e89ea7a7ee58e66628c55c776b • CWE-264: Permissions, Privileges, and Access Controls •

CVSS: 5.5EPSS: 0%CPEs: 34EXPL: 0

11 Mar 2015 — The emulation routines for unspecified X86 devices in Xen 3.2.x through 4.5.x does not properly initialize data, which allow local HVM guest users to obtain sensitive information via vectors involving an unsupported access size. Las rutinas de emulación para dispositivos X86 no especificados en Xen 3.2.x hasta 4.5.x no inicializa correctamente los datos, lo que permite a usuarios locales invitados HVM obtener información sensible a través de vectores que involucran un tamaño de acceso no soportado. Multiple... • http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 5.5EPSS: 0%CPEs: 38EXPL: 0

11 Mar 2015 — The HYPERVISOR_xen_version hypercall in Xen 3.2.x through 4.5.x does not properly initialize data structures, which allows local guest users to obtain sensitive information via unspecified vectors. La hiperllamada HYPERVISOR_xen_version en Xen 3.2.x hasta 4.5.x ni inicializa correctamente las estructuras de datos, lo que permite a usuarios locales invitados obtener información sensible a través de vectores no especificados. Multiple vulnerabilities have been found in Xen, the worst of which can allow remote... • http://lists.fedoraproject.org/pipermail/package-announce/2015-March/152483.html • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •