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: 1.9EPSS: 0%CPEs: 33EXPL: 0CVE-2014-8595
https://notcve.org/view.php?id=CVE-2014-8595
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction. El fichero arch/x86/x86_emulate.c in Xen 3.2.1 hasta 4.4.x no comprueba correctamente los privilegios, lo que permite a los usuarios invitados HVM locales conseguir privilegios o causar una denegación de servicio (caída) a través de una instrucción manipulada de rama lejana (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, o (6) LRET. • 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/62537 http://secunia.com/advisories/62672 http://support.citrix.com/article/CTX200288 http://support.citrix.com/article/CTX201794 http://www.debian.org/security/2015/dsa-3140 http://www.securityfocus.com/bid/71151 http://xenbits.xen.org/xsa/advisory-110.html https://exchange.xforce.ibmcloud.com/vulnerabilities&#x • CWE-17: DEPRECATED: Code •
CVSS: 4.6EPSS: 0%CPEs: 2EXPL: 0CVE-2014-5148
https://notcve.org/view.php?id=CVE-2014-5148
Xen 4.4.x, when running on an ARM system and "handling an unknown system register access from 64-bit userspace," returns to an instruction of the trap handler for kernel space faults instead of an instruction that is associated with faults in 64-bit userspace, which allows local guest users to cause a denial of service (crash) and possibly gain privileges via a crafted process. Xen 4.4.x, cuando funciona con un sistema ARM y 'maneja un acceso al registro de un sistema desconocido de un espacio de usuario de 64 bits,' vuelve a una instrucción del manejador trap para fallos en espacios del kernel en lugar de una instrucción que está asociada con fallos en el espacio de usuario de 64 bits, lo que permite a usuarios locales invitados causar una denegación de servicio (caída) y posiblemente ganar privilegios a través de un proceso manipulado. • http://secunia.com/advisories/59934 http://www.securityfocus.com/bid/69189 http://www.securitytracker.com/id/1030725 http://xenbits.xenproject.org/xsa/advisory-103.html https://exchange.xforce.ibmcloud.com/vulnerabilities/95233 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
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: 6.1EPSS: 0%CPEs: 21EXPL: 0CVE-2014-7154
https://notcve.org/view.php?id=CVE-2014-7154
Race condition in HVMOP_track_dirty_vram in Xen 4.0.0 through 4.4.x does not ensure possession of the guarding lock for dirty video RAM tracking, which allows certain local guest domains to cause a denial of service via unspecified vectors. Condición de carrera en HVMOP_track_dirty_vram en Xen 4.0.0 hasta 4.4.x no asegura la posesión del bloqueo de guardar para el seguimiento RAM de vídeos sucios, lo que permite a dominios locales de huésped causar una denegación de servicio 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/61501 http://secunia.com/advisories/61890 http://security.gentoo.org/glsa/glsa-201412-42.xml http://www.debian.org/security/2014/dsa-3041 http://www. • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •