CVSS: 5.4EPSS: 0%CPEs: 21EXPL: 0CVE-2014-8594
https://notcve.org/view.php?id=CVE-2014-8594
The do_mmu_update function in arch/x86/mm.c in Xen 4.x through 4.4.x does not properly restrict updates to only PV page tables, which allows remote PV guests to cause a denial of service (NULL pointer dereference) by leveraging hardware emulation services for HVM guests using Hardware Assisted Paging (HAP). La función do_mmu_update en arch/x86/mm.c en Xen 4.x hasta la versión 4.4.x no restringe adecuadamente las actualizaciones a las tablas de página sólo para PV, lo que permite a invitados PV remotos provocar una denegación de servicio (referencia a puntero NULL) aprovechando los servicios de emulación de hardware para invitados HVM que utilizan Hardware Assisted Paging (HAP). • http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html http://secunia.com/advisories/62672 http://www.debian.org/security/2015/dsa-3140 http://www.securityfocus.com/bid/71149 http://xenbits.xen.org/xsa/advisory-109.html https://exchange.xforce.ibmcloud.com/vulnerabilities/98767 https://security.gentoo.org/glsa/201504-04 • CWE-20: Improper Input Validation •
CVSS: 3.3EPSS: 0%CPEs: 19EXPL: 0CVE-2014-7156
https://notcve.org/view.php?id=CVE-2014-7156
The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 3.3.x through 4.4.x does not check the supervisor mode permissions for instructions that generate software interrupts, which allows local HVM guest users to cause a denial of service (guest crash) via unspecified vectors. La función x86_emulate en arch/x86/x86_emulate/x86_emulate.c en Xen 3.3.x hasta 4.4.x no comprueba los permisos del modo de supervisión para las instrucciones que generan interrupciones de software, lo que permite a usuarios locales huéspedes de HVM causar una denegación de servicio (caída del huésped) a través de vectores no especificados. • http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html http://secunia.com/advisories/61500 http://secunia.com/advisories/61858 http://secunia.com/advisories/61890 http://security.gentoo.org/glsa/glsa-201412-42.xml http://support.citrix.com • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 5.8EPSS: 0%CPEs: 43EXPL: 0CVE-2014-7155
https://notcve.org/view.php?id=CVE-2014-7155
The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction. La función x86_emulate en arch/x86/x86_emulate/x86_emulate.c en Xen 4.4.x y anteriores no comprueba debidamente los permisos del modo de supervisor, lo que permite a usuarios locales de HVM causar una denegación de servicio (caída del huésped) o ganar privilegios del medo del kernel del huésped a través de vectores que involucran una instrucción (1) HLT, (2) LGDT, (3) LIDT, o (4) LMSW. • http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140418.html http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140483.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html http://secunia.com/advisories/61858 http://secunia.com/advisories/61890 http://security.gentoo.org/glsa/glsa-201412-42.xml http://support.citrix.com/article/CTX200218 http://www.debian. • CWE-264: Permissions, Privileges, and Access Controls •
CVSS: 2.7EPSS: 0%CPEs: 24EXPL: 0CVE-2014-4021 – xen: Hypervisor heap contents leaked to guests (xsa-100)
https://notcve.org/view.php?id=CVE-2014-4021
Xen 3.2.x through 4.4.x does not properly clean memory pages recovered from guests, which allows local guest OS users to obtain sensitive information via unspecified vectors. Xen 3.2.x hasta 4.4.x no limpia debidamente las páginas de memoria recuperadas de invitados, lo que permite a usuarios locales del sistema operativo invitado obtener información sensible a través de vectores no especificados. It was found that the Xen hypervisor implementation did not properly clean memory pages previously allocated by the hypervisor. A privileged guest user could potentially use this flaw to read data relating to other guests or the hypervisor itself. • http://linux.oracle.com/errata/ELSA-2014-0926-1.html http://linux.oracle.com/errata/ELSA-2014-0926.html http://lists.fedoraproject.org/pipermail/package-announce/2014-July/135068.html http://lists.fedoraproject.org/pipermail/package-announce/2014-July/135071.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00003.html http://secunia.com/advisories/59208 http://secunia.com/advisories/60027 http:// • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-244: Improper Clearing of Heap Memory Before Release ('Heap Inspection') •
CVSS: 5.2EPSS: 0%CPEs: 24EXPL: 0CVE-2014-1893
https://notcve.org/view.php?id=CVE-2014-1893
Multiple integer overflows in the (1) FLASK_GETBOOL and (2) FLASK_SETBOOL suboperations in the flask hypercall in Xen 4.1.x, 3.3.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service (processor fault) via unspecified vectors, a different vulnerability than CVE-2014-1891, CVE-2014-1892, and CVE-2014-1894. Múltiples desbordamientos de enteros en las suboperaciones (1) FLASK_GETBOOL y (2) FLASK_SETBOOL en la hiperllamada flask hypercall en Xen 4.1.x, 3.3.x, 3.2.x y anteriores, cuando XSM está habilitado, permiten a usuarios locales causar una denegación de servicio (fallo de procesador) a través de vectores no especificados, una vulnerabilidad diferente a CVE-2014-1891, CVE-2014-1892 y CVE-2014-1894. • http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00011.html http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html http://security.gentoo.org/glsa/glsa-201407-03.xml http://www.openwall.com/lists/oss-security/2014/02/07/12 http://www.openwall.com/lists/oss-security/2014/02/07/4 http://www.openwall.com/lists/oss-security/2014/02/10/8 http://xenbits.xen.org/xsa&#x • CWE-189: Numeric Errors •