CVSS: 6.1EPSS: 0%CPEs: 1EXPL: 0CVE-2011-1780 – kernel: xen: svm: insufficiencies in handling emulated instructions during vm exits
https://notcve.org/view.php?id=CVE-2011-1780
The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread. La instrucción de emulación en Xen 3.0.3 permite a usuarios invitados SMP locales causar denegación de servicio (caída del anfitrión) reemplazando la instrucción que causa que la máquina virtual salga en un hilo con una instrucción deferente en un hilo distinto. • http://rhn.redhat.com/errata/RHSA-2011-1065.html http://rhn.redhat.com/errata/RHSA-2011-1163.html http://www.openwall.com/lists/oss-security/2011/07/07/3 https://bugzilla.redhat.com/show_bug.cgi?id=702657 https://access.redhat.com/security/cve/CVE-2011-1780 • CWE-20: Improper Input Validation •
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 •
CVSS: 5.5EPSS: 0%CPEs: 13EXPL: 0CVE-2010-4247 – xen: request-processing loop is unbounded in blkback
https://notcve.org/view.php?id=CVE-2010-4247
The do_block_io_op function in (1) drivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c in Xen before 3.4.0 for the Linux kernel 2.6.18, and possibly other versions, allows guest OS users to cause a denial of service (infinite loop and CPU consumption) via a large production request index to the blkback or blktap back-end drivers. NOTE: some of these details are obtained from third party information. La función do_block_io_op en (1) ldrivers/xen/blkback/blkback.c and (2) drivers/xen/blktap/blktap.c en Xen anterior a v3.4.0 para el kernel Linux v2.6.18, y posiblemente otras versiones, permite a los usuarios invitados del sistema operativo causar una denegación de servicio (bucle infinito y el consumo de CPU) a través de un gran índice de producción de peticiones a los controladores blkback o blktap back-end. NOTA: algunos de estos detalles han sido obtenidos de información de terceros. • http://secunia.com/advisories/35093 http://secunia.com/advisories/42789 http://secunia.com/advisories/46397 http://www.openwall.com/lists/oss-security/2010/11/23/1 http://www.openwall.com/lists/oss-security/2010/11/24/8 http://www.redhat.com/support/errata/RHSA-2011-0004.html http://www.securityfocus.com/archive/1/520102/100/0/threaded http://www.securityfocus.com/bid/45029 http://www.vmware.com/security/advisories/VMSA-2011-0012.html http://www.vupen.com/ • CWE-20: Improper Input Validation •