CVSS: 8.6EPSS: 0%CPEs: 17EXPL: 0CVE-2015-8555
https://notcve.org/view.php?id=CVE-2015-8555
Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors. Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x y versiones anteriores no inicializa registros de memoria de pila x86 FPU y XMM cuando XSAVE/XRSTOR no se utilizan para gestionar el estado del registro extendido de invitado, lo que permite a dominios de invitado local obtener información sensible de otros dominios a través de vectores no especificados. • http://support.citrix.com/article/CTX203879 http://www.debian.org/security/2016/dsa-3519 http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/79543 http://www.securitytracker.com/id/1034477 http://xenbits.xen.org/xsa/advisory-165.html https://security.gentoo.org/glsa/201604-03 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 6.3EPSS: 0%CPEs: 37EXPL: 0CVE-2016-1571
https://notcve.org/view.php?id=CVE-2016-1571
The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check. La función paging_invlpg en include/asm-x86/paging.h en Xen 3.3.x hasta la versión 4.6.x, cuando se utiliza paginación en modo shadow o la virtualización anidada está habilitada, permite a usuarios HVM invitados locales provocar una denegación de servicio (caída de host) a través de una dirección de invitado no canónica en una instrucción INVVPID, lo que desencadena una comprobación de errores de hipervisor. • http://support.citrix.com/article/CTX205496 http://www.debian.org/security/2016/dsa-3519 http://www.securitytracker.com/id/1034745 http://xenbits.xen.org/xsa/advisory-168.html • CWE-17: DEPRECATED: Code •
CVSS: 5.6EPSS: 0%CPEs: 3EXPL: 0CVE-2012-3498
https://notcve.org/view.php?id=CVE-2012-3498
PHYSDEVOP_map_pirq in Xen 4.1 and 4.2 and Citrix XenServer 6.0.2 and earlier allows local HVM guest OS kernels to cause a denial of service (host crash) and possibly read hypervisor or guest memory via vectors related to a missing range check of map->index. PHYSDEVOP_map_pirq en Xen v4.1 y v4.2 y Citrix XenServer v6.0.2 y anteriores permite a un kernel OS HVM invitado causar una denegación de servicio (caída del host) y posiblemente leer hipervisor o memoria mediante vectores relacionados con una falta de comproebación de map->index. • http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html http://lists.xen.org/archives/html/xen-announce/2012-09/msg00005.html http://osvdb.org/85198 http://secunia.com/advisories/ • CWE-20: Improper Input Validation •
CVSS: 6.9EPSS: 0%CPEs: 2EXPL: 0CVE-2012-3516
https://notcve.org/view.php?id=CVE-2012-3516
The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location. La sub-operación GNTTABOP_swap_grant_ref en el "grant table hypercall" en Xen v4.2 y Citrix XenServer v6.0.2 permite a los kernels locales de invitado o administradores causar una denegación de servicio (caída del host) y, posiblemente, obtener privilegios a través de una referencia manipulada que genera una escritura en una ubicación en memoria del hipervisor • http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html http://secunia.com/advisories/50472 http://secunia.com/advisories/50530 http://support.citrix.com/article/CTX134708 http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking http://www.openwall.com/lists/oss-security/2012/09/05/11 http://www.securityfocus.com/bid/55411 • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 6.1EPSS: 0%CPEs: 11EXPL: 0CVE-2012-3495
https://notcve.org/view.php?id=CVE-2012-3495
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors. La hypercall physdev_get_free_pirq en arch/x86/physdev.c en Xen v4.1.x y Citrix XenServer v6.0.2 y anteriores utiliza el valor devuelto por la función get_free_pirq como un índice de la matriz sin comprobar que el valor de retorno indica un error, permitiendo a los huéspedes del OS invitado causar una denegación de servicio (escritura de memoria no válidas y caída del host) y, posiblemente, obtener privilegios a través de vectores no especificados. • http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html http://secunia.com/advisories/51413 http://secunia.com&#x • CWE-20: Improper Input Validation •