CVSS: 4.7EPSS: 0%CPEs: 44EXPL: 0CVE-2015-8340
https://notcve.org/view.php?id=CVE-2015-8340
The memory_exchange function in common/memory.c in Xen 3.2.x through 4.6.x does not properly release locks, which might allow guest OS administrators to cause a denial of service (deadlock or host crash) via unspecified vectors, related to XENMEM_exchange error handling. La función memory_exchange en common/memory.c en Xen 3.2.x hasta la versión 4.6.x no devuelve adecuadamente páginas a un dominio, lo que podría permitir a administradores invitados del SO causar una denegación de servicio (interbloqueo o caída del host) a través de vectores no especificados, relacionados con un error de manejo XENMEM_exchange. • http://support.citrix.com/article/CTX203451 http://www.debian.org/security/2016/dsa-3519 http://www.securityfocus.com/bid/79038 http://www.securitytracker.com/id/1034391 http://xenbits.xen.org/xsa/advisory-159.html https://security.gentoo.org/glsa/201604-03 • CWE-17: DEPRECATED: Code •
CVSS: 7.2EPSS: 0%CPEs: 1EXPL: 0CVE-2015-8338
https://notcve.org/view.php?id=CVE-2015-8338
Xen 4.6.x and earlier does not properly enforce limits on page order inputs for the (1) XENMEM_increase_reservation, (2) XENMEM_populate_physmap, (3) XENMEM_exchange, and possibly other HYPERVISOR_memory_op suboperations, which allows ARM guest OS administrators to cause a denial of service (CPU consumption, guest reboot, or watchdog timeout and host reboot) and possibly have unspecified other impact via unknown vectors. Xen 4.6.x y versiones anteriores no impone adecuadamente límites en órdenes de entrada de página para las suboperaciones (1) XENMEM_increase_reservation, (2) XENMEM_populate_physmap, (3) XENMEM_exchange y posiblemente otra HYPERVISOR_memory_op, lo que permite a administradores ARM invitados del SO causar una denegación de servicio (consumo de CPU, reinicio de invitado o tiempo de watchdog excedido o reinicio host) y posiblemente tener otro impacto no especificado a través de vectores desconocidos. • http://www.debian.org/security/2016/dsa-3633 http://www.securityfocus.com/bid/78920 http://www.securitytracker.com/id/1034390 http://xenbits.xen.org/xsa/advisory-158.html • CWE-254: 7PK - Security Features •
CVSS: 4.9EPSS: 0%CPEs: 8EXPL: 0CVE-2015-7812
https://notcve.org/view.php?id=CVE-2015-7812
The hypercall_create_continuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service (host crash) via a preemptible hypercall to the multicall interface. La función hypercall_create_continuation en arch/arm/domain.c en Xen 4.4.x hasta la versión 4.6.x permite a usuarios locales invitados provocar una denegación de servicio (caída de host) a través de una hypercall a la interfaz multi llamada. • http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html http://www.debian.org/security/2015/dsa-3414 http://www.securitytracker.com/id/1034031 http://xenbits.xen.org/xsa/advisory-145.html https://security.gentoo.org/glsa/201604-03 • CWE-254: 7PK - Security Features •
CVSS: 5.2EPSS: 0%CPEs: 30EXPL: 0CVE-2015-8104 – virt: guest to host DoS by triggering an infinite loop in microcode via #DB exception
https://notcve.org/view.php?id=CVE-2015-8104
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c. El subsistema KVM en el kernel Linux hasta la versión 4.2.6, y Xen 4.3.x hasta la versión 4.6.x permite a usuarios del SO invitados causar una denegación de servicio (panic en el host del SO o cuelgue) desencadenando muchas excepciones #DB (también conocidas como Debug), relacionadas con svm.c. It was found that the x86 ISA (Instruction Set Architecture) is prone to a denial of service attack inside a virtualized environment in the form of an infinite loop in the microcode due to the way (sequential) delivering of benign exceptions such as #DB (debug exception) is handled. A privileged user inside a guest could use this flaw to create denial of service conditions on the host kernel. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cbdb967af3d54993f5814f1cee0ed311a055377d http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html http:/&# • CWE-399: Resource Management Errors CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 5.2EPSS: 0%CPEs: 33EXPL: 0CVE-2015-5307 – virt: guest to host DoS by triggering an infinite loop in microcode via #AC exception
https://notcve.org/view.php?id=CVE-2015-5307
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c. El subsistema KVM en el kernel Linux hasta la versión 4.2.6, y Xen 4.3.x hasta la versión 4.6.x permite a usuarios del SO invitados causar una denegación de servicio (panic en el host del SO o cuelgue) desencandenando muchas excepciones #AC (también conocidas como Alignment Check), relacionadas con svm.c y vmx.c. It was found that the x86 ISA (Instruction Set Architecture) is prone to a denial of service attack inside a virtualized environment in the form of an infinite loop in the microcode due to the way (sequential) delivering of benign exceptions such as #AC (alignment check exception) is handled. A privileged user inside a guest could use this flaw to create denial of service conditions on the host kernel. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=54a20552e1eae07aa240fa370a0293e006b5faed http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172187.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172300.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172435.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00005.html http:/&# • CWE-399: Resource Management Errors CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •