CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 0CVE-2011-2901 – kernel: xen: off-by-one shift in x86_64 __addr_ok()
https://notcve.org/view.php?id=CVE-2011-2901
Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits. Error de superación de límite (off-by-one) en la macro __addr_ok en Xen 3.3 y anteriores permite a administradores invitados locales 64 bit PV causar una denegación del servicio (caída del host) a través de hypercalls no especificadas que ignoran bits de direcciones virtuales. • http://rhn.redhat.com/errata/RHSA-2011-1212.html http://secunia.com/advisories/55082 http://security.gentoo.org/glsa/glsa-201309-24.xml http://www.openwall.com/lists/oss-security/2011/09/02/2 https://bugzilla.redhat.com/show_bug.cgi?id=728042 https://access.redhat.com/security/cve/CVE-2011-2901 • CWE-193: Off-by-one Error CWE-399: Resource Management Errors •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2011-2519 – kernel: xen: x86_emulate: fix SAHF emulation
https://notcve.org/view.php?id=CVE-2011-2519
Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction. Xen en el kernel de Linux, al ejecutar como invitado en una máquina sin paginación asistida por hardware (HAP), permite a usuarios invitados causar denegación de servicio (referencia a puntero inválido y caída del hipervisor) a través de la instrucción SAHF. • http://rhn.redhat.com/errata/RHSA-2011-1212.html http://www.openwall.com/lists/oss-security/2011/08/30/1 http://xenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644 https://bugzilla.redhat.com/show_bug.cgi?id=718882 https://access.redhat.com/security/cve/CVE-2011-2519 • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 19EXPL: 0CVE-2011-1166 – kernel: xen: x86_64: fix error checking in arch_set_info_guest()
https://notcve.org/view.php?id=CVE-2011-1166
Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables. Xen, probablemente anterior a v4.0.2 permite a invitados locales de 64-bit PV provocar una denegación de servicio (caída del host) especificando la ejecución en modo usuario sin las tablas de página. • http://downloads.avaya.com/css/P8/documents/100145416 http://rhn.redhat.com/errata/RHSA-2011-0833.html http://wiki.xen.org/wiki/Security_Announcements#XSA-1_Host_crash_due_to_failure_to_correctly_validate_PV_kernel_execution_state. https://access.redhat.com/security/cve/CVE-2011-1166 https://bugzilla.redhat.com/show_bug.cgi?id=688579 • CWE-20: Improper Input Validation •
CVSS: 6.1EPSS: 0%CPEs: 19EXPL: 0CVE-2010-4255 – xen: 64-bit PV xen guest can crash host by accessing hypervisor per-domain memory area
https://notcve.org/view.php?id=CVE-2010-4255
The fixup_page_fault function in arch/x86/traps.c in Xen 4.0.1 and earlier on 64-bit platforms, when paravirtualization is enabled, does not verify that kernel mode is used to call the handle_gdt_ldt_mapping_fault function, which allows guest OS users to cause a denial of service (host OS BUG_ON) via a crafted memory access. La función fixup_page_fault en arch/x86/traps.c en Xen v.4.0.1 y anteriores sobre plataformas 64-bit, cuando se activa la paravirtualización, no verifica que el modo kernel está usado para llamar a la función handle_gdt_ldt_mapping_fault, lo que permite a los usuarios invitados del sistema operativo provocar una denegación de servicio (host OS BUG_ON) a través de un acceso de memoria manipulado. • http://lists.xensource.com/archives/html/xen-devel/2010-11/msg01650.html http://openwall.com/lists/oss-security/2010/11/30/5 http://openwall.com/lists/oss-security/2010/11/30/8 http://secunia.com/advisories/42884 http://secunia.com/advisories/46397 http://www.redhat.com/support/errata/RHSA-2011-0017.html http://www.securityfocus.com/archive/1/520102/100/0/threaded http://www.vmware.com/security/advisories/VMSA-2011-0012.html https://bugzilla.redhat.com/show_bug •
CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 2CVE-2010-4238 – kernel: Xen Dom0 crash with Windows 2008 R2 64bit DomU + GPLPV
https://notcve.org/view.php?id=CVE-2010-4238
The vbd_create function in Xen 3.1.2, when the Linux kernel 2.6.18 on Red Hat Enterprise Linux (RHEL) 5 is used, allows guest OS users to cause a denial of service (host OS panic) via an attempted access to a virtual CD-ROM device through the blkback driver. NOTE: some of these details are obtained from third party information. La función vbd_create de Xen 3.1.2, cuando el kernel de Linux 2.6.18 de Red Hat Enterprise Linux (RHEL) 5 es utilizado, permite a usuarios del SO invitados provocar una denegación de servicio (excepción "panic" del SO del equipo) a través de un intento de acceso a un dispositivo de CD-ROM virtual a través del controlador blkback. NOTA: algunos de estos detalles han sido obtenidos de terceras partes. • http://bugs.centos.org/bug_view_advanced_page.php?bug_id=4517 http://secunia.com/advisories/42884 http://secunia.com/advisories/46397 http://www.redhat.com/support/errata/RHSA-2011-0017.html http://www.securityfocus.com/archive/1/520102/100/0/threaded http://www.securityfocus.com/bid/45795 http://www.vmware.com/security/advisories/VMSA-2011-0012.html https://bugzilla.redhat.com/show_bug.cgi?id=655623 https://exchange.xforce.ibmcloud.com/vulnerabilities/64698 https://access& • CWE-264: Permissions, Privileges, and Access Controls •