CVSS: 8.8EPSS: 0%CPEs: 47EXPL: 0CVE-2016-3710 – qemu: incorrect banked access bounds checking in vga module
https://notcve.org/view.php?id=CVE-2016-3710
The VGA module in QEMU improperly performs bounds checking on banked access to video memory, which allows local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the "Dark Portal" issue. El módulo VGA en QEMU lleva a cabo incorrectamente comprobaciones de límites sobre acceso almacenado a la memoria de vídeo, lo que permite a administradores locales de SO invitado ejecutar código arbitrario sobre el anfitrión cambiando los modos de acceso después de establecer el banco de registros, también conocido como el problema "Dark Portal". An out-of-bounds read/write access flaw was found in the way QEMU's VGA emulation with VESA BIOS Extensions (VBE) support performed read/write operations using I/O port methods. A privileged guest user could use this flaw to execute arbitrary code on the host with the privileges of the host's QEMU process. • http://rhn.redhat.com/errata/RHSA-2016-0724.html http://rhn.redhat.com/errata/RHSA-2016-0725.html http://rhn.redhat.com/errata/RHSA-2016-0997.html http://rhn.redhat.com/errata/RHSA-2016-0999.html http://rhn.redhat.com/errata/RHSA-2016-1000.html http://rhn.redhat.com/errata/RHSA-2016-1001.html http://rhn.redhat.com/errata/RHSA-2016-1002.html http://rhn.redhat.com/errata/RHSA-2016-1019.html http://rhn.redhat.com/errata/RHSA-2016-1943.html http://suppor • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
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: 3.2EPSS: 0%CPEs: 1EXPL: 0CVE-2012-5512
https://notcve.org/view.php?id=CVE-2012-5512
Array index error in the HVMOP_set_mem_access handler in Xen 4.1 allows local HVM guest OS administrators to cause a denial of service (crash) or obtain sensitive information via unspecified vectors. Un error índice de matriz en el controlador de HVMOP_set_mem_access en Xen v4.1 permite causar una denegación de servicio (caída del S.O.) u obtener información sensible a los administradores de sistemas operativos invitados en el HVM local a través de vectores no especificados. • http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00001.html http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00018.html http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00019.html http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00011.html http://secunia.com/advisories/51397 http://secunia.com/advisories/51486 http://secunia.com/advisories/51487 http://secunia.com/advisories/55082 http://security.gentoo.org/glsa/glsa-201309-24.xml h • CWE-16: Configuration •
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 •