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CVSS: 5.2EPSS: 0%CPEs: 30EXPL: 0

CVE-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: 0

CVE-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') •

CVSS: 4.9EPSS: 0%CPEs: 4EXPL: 0

CVE-2015-4856

https://notcve.org/view.php?id=CVE-2015-4856

Unspecified vulnerability in the Oracle VM VirtualBox component in Oracle Virtualization VirtualBox before 4.0.30, 4.1.38, 4.2.30, 4.3.26, and 5.0.0 allows local users to affect availability via unknown vectors related to Core. Vulnerabilidad no especificada en el componente Oracle VM VirtualBox en Oracle Virtualization VirtualBox en versiones anteriores a 4.0.30, 4.1.38, 4.2.30, 4.3.26 y 5.0.0 permite a usuarios locales afectar a la disponibilidad a través de vectores desconocidos relacionados con Core. • http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html http://www.securitytracker.com/id/1033880 •

CVSS: 5.0EPSS: 1%CPEs: 8EXPL: 0

CVE-2015-4896

https://notcve.org/view.php?id=CVE-2015-4896

Unspecified vulnerability in the Oracle VM VirtualBox component in Oracle Virtualization VirtualBox before 4.0.34, 4.1.42, 4.2.34, 4.3.32, and 5.0.8, when a VM has the Remote Display feature (RDP) enabled, allows remote attackers to affect availability via unknown vectors related to Core. Vulnerabilidad no especificada en el componente Oracle VM VirtualBox en Oracle Virtualization VirtualBox en versiones anteriores a 4.0.34, 4.1.42, 4.2.34, 4.3.32 y 5.0.8, cuando una VM tiene al característica Remote Display (RDP) habilitada, permite a atacantes remotos afectar a la disponibilidad a través de vectores desconocidos relacionados con Core. • http://lists.opensuse.org/opensuse-updates/2015-11/msg00000.html http://lists.opensuse.org/opensuse-updates/2015-11/msg00172.html http://www.debian.org/security/2015/dsa-3384 http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html http://www.securityfocus.com/bid/77198 http://www.securitytracker.com/id/1033880 •

CVSS: 2.1EPSS: 0%CPEs: 8EXPL: 0

CVE-2015-4813

https://notcve.org/view.php?id=CVE-2015-4813

Unspecified vulnerability in the Oracle VM VirtualBox component in Oracle Virtualization VirtualBox prior to 4.0.34, 4.1.42, 4.2.34, 4.3.32, and 5.0.8, when using a Windows guest, allows local users to affect availability via unknown vectors related to Core. Vulnerabilidad no especificada en el componente Oracle VM VirtualBox en Oracle Virtualization VirtualBox anterior a 4.0.34, 4.1.42, 4.2.34, 4.3.32 y 5.0.8, cuando se usa un invitado de Windows, permite a usuarios locales afectar a la disponibilidad a través de vectores desconocidos relacionados con Core. • http://lists.opensuse.org/opensuse-updates/2015-11/msg00000.html http://lists.opensuse.org/opensuse-updates/2015-11/msg00172.html http://www.debian.org/security/2015/dsa-3384 http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html http://www.securityfocus.com/bid/77185 http://www.securitytracker.com/id/1033880 •